{"id":269690,"date":"2026-11-12T14:39:34","date_gmt":"2026-11-12T13:39:34","guid":{"rendered":"https:\/\/sherpas.com\/blog\/?p=269690"},"modified":"2026-11-12T14:46:34","modified_gmt":"2026-11-12T13:46:34","slug":"pyramide-ponzi","status":"publish","type":"post","link":"https:\/\/sherpas.com\/blog\/pyramide-ponzi\/","title":{"rendered":"Pyramide de Ponzi : d\u00e9finition, histoire et fonctionnement \ud83d\udcc9"},"content":{"rendered":"\n<p>Tu en as s\u00fbrement d\u00e9j\u00e0 entendu parler, mais peut-\u00eatre que tu ne l\u2019as jamais vraiment \u00e9tudi\u00e9. La <strong>pyramide de Ponzi<\/strong> est une escroquerie financi\u00e8re qui paie les premiers investisseurs avec l\u2019argent des suivants, au lieu de s\u2019appuyer sur de vrais b\u00e9n\u00e9fices. Elle est devenue <strong>un des syst\u00e8mes de fraude<\/strong> les plus r\u00e9put\u00e9s d\u00e8s le d\u00e9but du XXe si\u00e8cle.&nbsp;<\/p>\n\n\n\n<p>Dans cet article, on t\u2019explique <strong>comment cette escroquerie s\u2019est d\u00e9velopp\u00e9e<\/strong>, son fonctionnement chiffr\u00e9, les cas Madoff et Albanie, ce que dit la loi et comment la rep\u00e9rer. Si tu pr\u00e9pares un expos\u00e9, un devoir en <a href=\"https:\/\/sherpas.com\/cours\/ses\">SES<\/a> ou le Grand oral, tu trouveras aussi de quoi construire ta r\u00e9flexion.&nbsp; \ud83e\udd25<\/p>\n\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>\ud83d\udca1 En bref<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p>Une pyramide de Ponzi est une escroquerie financi\u00e8re : l\u2019organisateur promet des gains \u00e9lev\u00e9s et sans risque, mais r\u00e9mun\u00e8re les anciens investisseurs avec l\u2019argent des nouveaux. Le syst\u00e8me s\u2019effondre d\u00e8s que les entr\u00e9es d\u2019argent ne suffisent plus. Il porte le nom de Charles Ponzi, qui l\u2019a rendu c\u00e9l\u00e8bre \u00e0 Boston en 1920.<\/p>\n\n        <\/div>\n              <\/section>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video autoplay loop muted playsinline poster=\"https:\/\/sherpas.com\/content\/uploads\/2026\/11\/pyramide-ponzi-gif-1-poster.webp\" src=\"https:\/\/sherpas.com\/content\/uploads\/2026\/11\/pyramide-ponzi-gif-1.mp4\" width=\"480\" height=\"360\" style=\"aspect-ratio: 480 \/ 360;max-width:100%;width:480px;height:auto\" aria-label=\"Bugs bunny qui compte ses billets \"><\/video><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quest-ce-que-la-pyramide-de-ponzi\">Qu&rsquo;est-ce que la pyramide de Ponzi ? \ud83c\udfe6<\/h2>\n\n\n\n<p>Pour faire simple, il s\u2019agit d\u2019un<strong> montage financier frauduleux fait par une personne X<\/strong>, promettant aux investisseurs <strong>des retours astronomiques avec un risque tr\u00e8s faible d\u2019\u00e9chec.<\/strong> En r\u00e9alit\u00e9, ces retours sur investissement sont faits gr\u00e2ce \u00e0 l\u2019arriv\u00e9e de nouveaux investisseurs.&nbsp;<\/p>\n\n\n\n<p>Les premiers d\u2019entre eux seront les plus avantag\u00e9s, tant que le nombre d\u2019investisseurs grandit. Sauf qu\u2019\u00e0 un moment ou un autre, <strong>elle finit par atteindre son plafond de verre <\/strong>et tout s\u2019\u00e9croule comme un ch\u00e2teau de cartes. Cette pratique est toujours utilis\u00e9e \u00e0 notre \u00e8re, mais alors, <strong>comment a-t-elle commenc\u00e9 ?&nbsp;<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"lorigine-de-la-pyramide-de-ponzi\">L\u2019origine de la pyramide de Ponzi \ud83e\uddd1<\/h3>\n\n\n\n<p>Le nom vient de <strong>Charles Ponzi<\/strong>, un immigr\u00e9 italien qui lance sa soci\u00e9t\u00e9 \u00e0 Boston fin 1919. Il n\u2019a pourtant pas invent\u00e9 le montage : Adele Spitzeder faisait d\u00e9j\u00e0 la m\u00eame chose en Bavi\u00e8re entre 1869 et 1872. Mais l\u2019affaire Ponzi a \u00e9t\u00e9 tellement m\u00e9diatis\u00e9e que l\u2019escroquerie porte son nom.<\/p>\n\n\n\n<p>Charles Ponzi (1882-1949) quitte l\u2019Italie pour les \u00c9tats-Unis au d\u00e9but du XXe si\u00e8cle. Le jeune Carlo (le pr\u00e9nom italien de Charles) se rend compte de la difficult\u00e9 de l\u2019emploi et que <strong>le r\u00eave am\u00e9ricain<\/strong> risque de tourner rapidement au cauchemar. Il va donc \u00e0 Montr\u00e9al, o\u00f9 il fait la rencontre de <strong>Luigi Zarossi, propri\u00e9taire d\u2019une banque.&nbsp;<\/strong><\/p>\n\n\n\n<p>Charles comprend alors l\u2019escroquerie de son compatriote italien : r\u00e9mun\u00e9rer ses plus anciens clients avec l\u2019argent des nouveaux. Quand la banque s\u2019effondre, Zarossi s\u2019enfuit. Ponzi, lui, est condamn\u00e9 \u00e0 trois ans de prison pour avoir falsifi\u00e9 un ch\u00e8que de <strong>423,58 $.<\/strong> Chassez le naturel, il revient toujours au galop. \ud83e\udd11<\/p>\n\n\n<section class=\"push \">\n        <div >\n            \n                                                <div class=\"push__container  qcd\" data-target=\"_self\" data-qcd=\"aHR0cHM6Ly9zaGVycGFzLmNvbS9mdW5uZWwtc3R1ZGVudC1xdWFsaWZpY2F0aW9u\" data-banner=\"2\" data-name=\"Cours part\u2019 global #1 = CPG1\" style=\"background-color: #F3FBF7\" >\n                                                                        <div class=\"push__teachers\">\n    <div class=\"d-flex justify-content-center d-md-none\">\n        <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\" alt=\"Logo Sherpas\">\n    <\/div>\n    <div class=\"swiper\">\n        <div class=\"swiper-wrapper\">\n                                            <div 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                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">26\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Simon2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Simon<\/p>                          <p class=\"push__teachers-school\">4e ann\u00e9e de m\u00e9decine<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    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          <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Margot2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Margot<\/p>                          <p class=\"push__teachers-school\">Arts et M\u00e9tiers ParisTech<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">22\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/David2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">David<\/p>                          <p class=\"push__teachers-school\">EDHEC<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">25\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Jade2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Jade<\/p>                          <p class=\"push__teachers-school\">Sciences Po Paris<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">21\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Antoine2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Antoine<\/p>                          <p class=\"push__teachers-school\">Sciences Po Paris<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">28\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Bastien2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Bastien<\/p>                          <p class=\"push__teachers-school\">Polytechnique<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">26\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Victor2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Victor<\/p>                          <p class=\"push__teachers-school\">ESCP<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                 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       <div  class=\"d-none d-md-block\" >\n                                    <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\"\n                                        alt=\"Logo Sherpas\">\n                                <\/div>\n                                                                                        <div class=\"push__title\"><p>Ton premier cours particulier est offert ! <span role=\"img\" aria-label=\"\ud83c\udf81\">\ud83c\udf81<\/span><!-- notionvc: 91b6b7d7-50f2-46f4-ae1f-ecbabe834aad --><\/p>\n<\/div>\n                                                                                        <div class=\"push__text\"><p>Nos profs sont pass\u00e9s par les meilleures \u00e9coles et universit\u00e9s.<!-- notionvc: 21bb66b6-b36d-4ce8-8950-173722d75a1e --><\/p>\n<p>&nbsp;<\/p>\n<\/div>\n                                                        <div class=\"push__promo-button   \">\n                                                                                                    <div\n                                        class=\"btn btn-primary\"\n                                        style=\"color: #ffffff; border-color: ; background-color: \"\n\n                                    >\n                                        J&rsquo;EN PROFITE MAINTENANT !\n                                    <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                    <\/div>\n                                    <\/div>\n    <\/section>\n\n\n\n<p>Apr\u00e8s d\u2019autres ennuis avec la justice, Ponzi s\u2019installe \u00e0 Boston et fonde la <strong><em>Securities Exchange Company<\/em><\/strong> (ou SEC, comme le futur gendarme de la bourse am\u00e9ricaine, cr\u00e9\u00e9 seulement en 1934 !). Son commerce tourne autour de la revente de ce qui \u00e9tait appel\u00e9 des <strong>coupons-r\u00e9ponses internationaux (CRI).<\/strong> Comment un si petit objet peut-il apporter autant d\u2019argent ?&nbsp;<\/p>\n\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>\ud83d\udca1 Pour info<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p>Le coupon r\u00e9ponse international est un papier qui permet de payer en avance <strong>les frais de port de la lettre de r\u00e9ponse attendue.<\/strong> Il est utilis\u00e9 aujourd\u2019hui dans le cas <strong>d\u2019inscriptions scolaires et universitaires<\/strong> ou pour<strong> des demandes d\u2019informations\/documents \u00e0 l\u2019\u00e9tranger.<\/strong><\/p>\n\n        <\/div>\n              <\/section>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pyramide-de-ponzi-vente-pyramidale-cavalerie-quelles-differences\">Pyramide de Ponzi, vente pyramidale, cavalerie : quelles diff\u00e9rences ? \ud83d\udd0d<\/h3>\n\n\n\n<p>Dans une pyramide de Ponzi, l\u2019organisateur collecte l\u2019argent et promet un placement : les investisseurs n\u2019ont rien d\u2019autre \u00e0 faire. Dans une vente pyramidale, chaque membre doit recruter d\u2019autres personnes pour gagner de l\u2019argent. Les deux montages reposent sur l\u2019arriv\u00e9e permanente de nouveaux participants et s\u2019effondrent de la m\u00eame fa\u00e7on.<\/p>\n\n\n\n<p>Tu croiseras aussi les expressions \u00ab syst\u00e8me de Ponzi \u00bb, \u00ab cha\u00eene de Ponzi \u00bb ou \u00ab sch\u00e9ma de Ponzi \u00bb : elles d\u00e9signent la m\u00eame fraude. Les sp\u00e9cialistes parlent de montage de \u00ab cavalerie \u00bb : on r\u00e8gle ce que l\u2019on doit \u00e0 certains avec l\u2019argent apport\u00e9 par d\u2019autres.<\/p>\n\n\n\n<p>Le marketing de r\u00e9seau, ou vente multiniveau, n\u2019est pas interdit en France. Il devient une vente pyramidale quand les gains viennent surtout du recrutement de nouveaux membres et non de la vente de vrais produits.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mecanisme-des-pyramides-de-ponzi\">M\u00e9canisme des pyramides de Ponzi \ud83d\udce4<\/h2>\n\n\n\n<p>Une pyramide de Ponzi fonctionne en trois temps : l\u2019organisateur promet des rendements \u00e9lev\u00e9s sans risque, il paie les premiers investisseurs avec l\u2019argent des suivants, puis tout s\u2019\u00e9croule quand les nouvelles entr\u00e9es ne couvrent plus les retraits. Regardons d\u2019abord le cas de Ponzi, puis un exemple chiffr\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"explication-du-fonctionnement-du-systeme-le-cas-originel\">Explication du fonctionnement du syst\u00e8me : le cas originel \ud83c\udfad<\/h3>\n\n\n\n<p>\u00c0 premi\u00e8re vue, le syst\u00e8me de Ponzi a l\u2019air totalement r\u00e9glo : il veut profiter des \u00e9carts de change et des r\u00e8gles postales de chaque pays <strong>pour cr\u00e9er un profit sur ces coupons-r\u00e9ponses.<\/strong> Il explique qu\u2019avec 1 dollar chang\u00e9 en lires, il ach\u00e8te 66 coupons en Italie, \u00e9changeables \u00e0 Boston contre 3,30 dollars de timbres. Profit sur le papier : 230%.<\/p>\n\n\n\n<p>Via ce syst\u00e8me, Ponzi r\u00e9ussit \u00e0 convaincre ses investisseurs : il leur promet <strong>50% d\u2019int\u00e9r\u00eats en 45 jours, ou 100% en 90 jours<\/strong>, soit le doublement de la mise. Le bruit se r\u00e9pand vite \u00e0 une \u00e9poque o\u00f9 les comptes d\u2019\u00e9pargne rapportent environ 5% par an.<\/p>\n\n\n\n<p>En r\u00e9alit\u00e9, le calcul ne pouvait pas fonctionner. Le 26 juillet 1920, le <em>Boston Post<\/em> r\u00e9v\u00e8le qu\u2019il faudrait 160 millions de coupons pour couvrir les placements de Ponzi, alors que 27 000 seulement circulent. Ses investisseurs \u00e9taient donc pay\u00e9s avec l\u2019argent des suivants.<\/p>\n\n\n<section class=\"read-also\">\n    <p class=\"read-also__title\">\u00c0 lire aussi<\/p>\n            <div class=\"read-also__list\">\n            <p>Voici <a href=\"https:\/\/sherpas.com\/blog\/lifestyle\/actu-societe\/\">5 red flags pour \u00e9viter les arnaques \ud83d\udea9<\/a><\/p>\n\n        <\/div>\n    <\/section>\n\n\n\n<p>Le syst\u00e8me s\u2019\u00e9croule \u00e0 l\u2019\u00e9t\u00e9 1920 et Ponzi est arr\u00eat\u00e9 le 12 ao\u00fbt. Il passe 3 ans et demi en prison f\u00e9d\u00e9rale pour fraude postale, retourne en prison pour une autre condamnation, puis il est expuls\u00e9 vers l\u2019Italie en 1934. Il meurt au Br\u00e9sil en 1949.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"presentation-de-la-pyramide\">Pr\u00e9sentation de la pyramide \ud83d\udcca<\/h3>\n\n\n\n<p>Avec une promesse de 100% en 90 jours, le nombre de nouveaux investisseurs doit doubler \u00e0 chaque trimestre : c\u2019est une suite g\u00e9om\u00e9trique de raison 2. Prenons 100 investisseurs qui placent chacun 100\u20ac. Pour leur rendre 200\u20ac chacun apr\u00e8s trois mois, il faut 200 nouveaux investisseurs, puis 400 pour payer ceux-l\u00e0, et ainsi de suite. \ud83d\udcc8<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Trimestre<\/th><th>Nouveaux investisseurs n\u00e9cessaires<\/th><th>Argent \u00e0 collecter<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>200<\/td><td>20 000\u20ac<\/td><\/tr><tr><td>2<\/td><td>400<\/td><td>40 000\u20ac<\/td><\/tr><tr><td>3<\/td><td>800<\/td><td>80 000\u20ac<\/td><\/tr><tr><td>4<\/td><td>1600<\/td><td>160 000\u20ac<\/td><\/tr><tr><td>6<\/td><td>6400<\/td><td>640 000\u20ac<\/td><\/tr><tr><td>8<\/td><td>25 600<\/td><td>2 560 000\u20ac<\/td><\/tr><tr><td>10<\/td><td>102 400<\/td><td>10 240 000\u20ac<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Au bout de dix trimestres, soit deux ans et demi, il faudrait plus de 100 000 nouveaux investisseurs. Comme le nombre de personnes pr\u00eates \u00e0 investir est limit\u00e9, la pyramide finit par manquer de monde : c\u2019est le plafond de verre dont on parlait plus haut. Ce calcul est simplifi\u00e9, car il suppose que chaque investisseur retire tout son argent \u00e0 l\u2019\u00e9ch\u00e9ance.<\/p>\n\n\n<section class=\"relance\">\n        <div >\n                            <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/sherpas.com\/funnel-student-qualification\">\n                    <div class=\"relance__container\"\n                        >\n                        \n                                                        <picture>\n                            <source srcset=\"https:\/\/sherpas.com\/content\/uploads\/2023\/07\/relance-cours-particulier-5.jpg\" media=\"(min-width: 999px)\">\n                            <source srcset=\"https:\/\/sherpas.com\/content\/uploads\/2023\/07\/relance-cours-particulier-5.jpg\" media=\"(max-width: 999px)\">\n                                <img decoding=\"async\"\n                                    src=\"https:\/\/sherpas.com\/content\/uploads\/2023\/07\/relance-cours-particulier-5.jpg\"\n                                    alt=\"Personne qui donne des cours particuliers\"\n                                >\n                            <\/picture>\n                                                <div class=\"relance__content\">\n                            \n                                <div class=\"relance__title\"> <p>Tu veux progresser en cours mais tu n&rsquo;as pas trouv\u00e9 la solution ? Prends rendez-vous avec un prof Sherpas pour un cours de soutien scolaire !<\/p>\n<\/div>\n                                                        <button type=\"button\"\n                                    class=\"relance__button btn btn-white\">\n                                Choisis ton prof\n                            <\/button>\n                        <\/div>\n                    <\/div>\n                <\/a>\n                    <\/div>\n    <\/section>\n\n    \n\n\n<h2 class=\"wp-block-heading\" id=\"les-pyramides-de-ponzi-celebres-madoff-albanie-et-aujourdhui\">Les pyramides de Ponzi c\u00e9l\u00e8bres : Madoff, Albanie et aujourd\u2019hui \ud83c\udf0d<\/h2>\n\n\n\n<p>Parmi les affaires les plus connues, il y a celle de Bernard Madoff aux \u00c9tats-Unis en 2008 et celle des pyramides financi\u00e8res albanaises de 1996 et 1997. Elles montrent que le sch\u00e9ma peut pi\u00e9ger des investisseurs fortun\u00e9s comme une grande partie d\u2019un pays, et qu\u2019il tombe toujours quand la confiance dispara\u00eet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"bernard-madoff-la-plus-grosse-pyramide-de-ponzi-connue\">Bernard Madoff, la plus grosse pyramide de Ponzi connue \ud83d\udc80<\/h3>\n\n\n\n<p>En d\u00e9cembre 2008, Bernard Madoff, ancien pr\u00e9sident du Nasdaq et patron d\u2019une soci\u00e9t\u00e9 d\u2019investissement new-yorkaise, est arr\u00eat\u00e9 par le FBI. Ses clients croyaient d\u00e9tenir environ 64,8 milliards de dollars, mais les victimes avaient r\u00e9ellement investi pr\u00e8s de 17,5 milliards. Pour le FBI, c\u2019est la plus grosse pyramide de Ponzi jamais mont\u00e9e.<\/p>\n\n\n\n<p>Pendant la crise financi\u00e8re de 2008, ses clients ont demand\u00e9 \u00e0 retirer environ 1,5 milliard de dollars, alors que sa caisse n\u2019en contenait que 300 millions : le syst\u00e8me s\u2019est effondr\u00e9. La sentence ? <strong>150 ans de prison, il n\u2019en aura fallu que 12 pour l\u2019amener \u00e0 sa fin de vie en 2021. \ud83d\udc80<\/strong><\/p>\n\n\n<section class=\"you-know\">\n                <div class=\"you-know__title\"><p>\ud83d\udca1 D\u00e9finitions<\/p>\n<\/div>\n                        <div class=\"you-know__text\">\n            <p><span style=\"font-weight: 400\"><strong>Nasdaq<\/strong> : il s\u2019agit d\u2019une bourse des valeurs bas\u00e9e aux \u00c9tats-Unis qui met l\u2019accent en particulier sur les soci\u00e9t\u00e9s sp\u00e9cialis\u00e9es dans le domaine de la technologie. <strong>Fond\u00e9s en 1971<\/strong> par la National Association of Securities Dealers, ses syst\u00e8mes informatis\u00e9s sont con\u00e7us pour permettre une n\u00e9gociation efficace et transparente.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400\"><strong>Cavalerie<\/strong> : montage qui consiste \u00e0 payer ou rembourser certains clients avec l\u2019argent apport\u00e9 par de nouveaux clients. C\u2019est le principe de la pyramide de Ponzi.<\/span><\/p>\n\n        <\/div>\n              <\/section>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"lalbanie-en-1997-une-pyramide-a-lechelle-dun-pays\">L\u2019Albanie en 1997 : une pyramide \u00e0 l\u2019\u00e9chelle d\u2019un pays \ud83d\udca5<\/h3>\n\n\n\n<p>En Albanie, les pyramides financi\u00e8res de 1996 et 1997 ont ruin\u00e9 une grande partie de la population et fait tomber le gouvernement. Des soci\u00e9t\u00e9s comme Vefa, Xhafferi ou Populli attiraient les \u00e9pargnants avec des taux \u00e9normes : Populli proposait m\u00eame plus de 30% par mois. Quand les nouveaux d\u00e9p\u00f4ts se sont taris, tout s\u2019est effondr\u00e9.<\/p>\n\n\n\n<p>Environ les deux tiers des Albanais avaient investi dans ces pyramides, dont les dettes atteignaient presque la moiti\u00e9 du PIB du pays \u00e0 leur sommet (1,2 milliard de dollars en novembre 1996). Des Albanais avaient vendu leur maison, et des paysans leur b\u00e9tail, pour placer leur argent. D\u00e9but 1997, les faillites de Sude et de Gjallica ont d\u00e9clench\u00e9 des \u00e9meutes.<\/p>\n\n\n\n<p>Le pays sombre alors dans le chaos : environ 2 000 personnes sont tu\u00e9es, un million d\u2019armes sont pill\u00e9es dans les armureries et le gouvernement doit d\u00e9missionner en mars 1997. Le Fonds mon\u00e9taire international raconte cette crise dans un <a href=\"https:\/\/www.imf.org\/external\/pubs\/ft\/fandd\/2000\/03\/jarvis.htm\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">article en anglais<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"les-pyramides-de-ponzi-aujourdhui\">Les pyramides de Ponzi aujourd\u2019hui \ud83d\ude08<\/h3>\n\n\n\n<p>Oui, les pyramides de Ponzi existent encore, et les cryptomonnaies leur ont offert un nouveau terrain de jeu. Le principe ne change pas : un rendement \u00e9lev\u00e9 et garanti, financ\u00e9 par les nouveaux arrivants.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"comment-reconnaitre-une-pyramide-de-ponzi\">Comment reconna\u00eetre une pyramide de Ponzi ? \ud83e\udd14<\/h2>\n\n\n\n<p>Pour reconna\u00eetre une pyramide de Ponzi, m\u00e9fie-toi d\u2019un rendement \u00e9lev\u00e9 et garanti, d\u2019un fonctionnement flou que personne ne sait t\u2019expliquer simplement et d\u2019un retrait d\u2019argent compliqu\u00e9. Plus la promesse est belle, plus elle doit t\u2019alerter : un placement sans risque ne rapporte jamais beaucoup. Voici les signaux d\u2019alerte \u00e0 conna\u00eetre.<\/p>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video autoplay loop muted playsinline poster=\"https:\/\/sherpas.com\/content\/uploads\/2026\/11\/pyramide-ponzi-gif-2-poster.webp\" src=\"https:\/\/sherpas.com\/content\/uploads\/2026\/11\/pyramide-ponzi-gif-2.mp4\" width=\"480\" height=\"480\" style=\"aspect-ratio: 480 \/ 480;max-width:100%;width:480px;height:auto\" aria-label=\"Di caprio qui pointe du doigt la t\u00e9l\u00e9 \"><\/video><\/figure>\n\n\n<ul class=\"list-formatted\">\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p>Les revenus potentiels sont bas\u00e9s seulement sur <strong>le recrutement de membres.<\/strong> C\u2019est ill\u00e9gal. Il s\u2019agit bien d\u2019une fraude pyramidale. Non seulement <strong>il est ill\u00e9gal de proposer ce genre de stratag\u00e8me<\/strong>, mais tu peux aussi <strong>y perdre toute ta mise !<\/strong><\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p>On te fait miroiter <strong>de gros profits sans trop d\u2019efforts.<\/strong> C\u2019est trop beau pour \u00eatre vrai.<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p>On t\u2019encourage \u00e0 utiliser <strong>un pseudonyme pour participer.<\/strong><\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p>On te demande de payer <strong>en argent comptant.<\/strong><\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p><strong>On t\u2019incite fortement<\/strong> \u00e0 ne pas laisser passer cette occasion. On joue sur tes sentiments.<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p><strong>Personne ne sait t\u2019expliquer d\u2019o\u00f9 viennent les gains.<\/strong> Si la strat\u00e9gie reste floue ou secr\u00e8te, m\u00e9fie-toi.<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udc49\">\n            <span>\n            <p><strong>R\u00e9cup\u00e9rer ton argent devient compliqu\u00e9 :<\/strong> d\u00e9lais, frais ou obligation de r\u00e9investir ou de recruter pour retirer ta mise.<\/p>\n\n            <\/span>\n        <\/li>\n            <\/ul>\n    \n\n\n\n<h3 class=\"wp-block-heading\" id=\"pourquoi-meme-des-investisseurs-avertis-se-font-pieger\">Pourquoi m\u00eame des investisseurs avertis se font pi\u00e9ger ? \ud83e\udde0<\/h3>\n\n\n\n<p>Parce que la confiance remplace la v\u00e9rification : les premiers investisseurs sont vraiment pay\u00e9s, ce qui rassure les suivants, et l\u2019organisateur s\u2019appuie souvent sur une image respectable. Bernard Madoff a ainsi tromp\u00e9 des particuliers, des associations caritatives et des entreprises.<\/p>\n\n\n\n<p>En cas de doute, ne verse rien et v\u00e9rifie d\u2019abord si la soci\u00e9t\u00e9 figure sur les <a href=\"https:\/\/www.amf-france.org\/fr\/espace-epargnants\/proteger-son-epargne\/listes-noires-et-mises-en-garde\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">listes noires de l\u2019AMF<\/a>. Si l\u2019on te presse de d\u00e9cider vite, c\u2019est d\u00e9j\u00e0 un mauvais signe.<\/p>\n\n\n<section class=\"push \">\n        <div >\n            \n                                                <div class=\"push__container  qcd\" data-target=\"_self\" data-qcd=\"aHR0cHM6Ly9zaGVycGFzLmNvbS9mdW5uZWwtc3R1ZGVudC1xdWFsaWZpY2F0aW9u\" data-banner=\"2\" data-name=\"Cours part\u2019 global #2 = CPG2\" style=\"background-color: #F3FBF7\" >\n                                                                        <div class=\"push__teachers\">\n    <div class=\"d-flex justify-content-center d-md-none\">\n        <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\" alt=\"Logo Sherpas\">\n    <\/div>\n    <div class=\"swiper\">\n        <div class=\"swiper-wrapper\">\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n        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  class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Sophie2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Sophie<\/p>                          <p class=\"push__teachers-school\">Sciences Po Bordeaux<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            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xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">22\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Noemie2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">No\u00e9mie<\/p>                          <p class=\"push__teachers-school\">M2 en droit \u00e0 Assas<\/p>                                                   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         class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Fanny2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Fanny<\/p>                          <p class=\"push__teachers-school\">Ponts ParisTech<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">29\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Simon2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Simon<\/p>                          <p class=\"push__teachers-school\">4e ann\u00e9e de m\u00e9decine<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">26\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Nicolas2x.png);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Nicolas<\/p>                          <p class=\"push__teachers-school\">CentraleSup\u00e9lec<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">27\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                                            <div class=\"swiper-slide\">\n                    <div class=\"push__teachers-card\">\n                        <div\n                            class=\"push__teachers-profil\"\n                            \n                            style=\"background-image: url(https:\/\/sherpas.com\/content\/uploads\/2022\/01\/Victor2x.jpg);\"\n                        >\n                    <\/div>\n                         <p class=\"push__teachers-name\">Victor<\/p>                          <p class=\"push__teachers-school\">ESCP<\/p>                                                     <div class=\"push__teachers-note\">\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                                    <svg  class=\"active\" >\n                                        <use\n                                            xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#star\"\/>\n                                    <\/svg>\n                                                            <\/div>\n                                                 <p class=\"push__teachers-price\">25\u20ac\/h<\/p>                     <\/div>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n                                                    <div class=\"push__content\">\n                                                            <div  class=\"d-none d-md-block\" >\n                                    <img decoding=\"async\" class=\"push__logo\" src=\"\/content\/themes\/sherpas-theme\/dist\/images\/logo.svg\"\n                                        alt=\"Logo Sherpas\">\n                                <\/div>\n                                                                                        <div class=\"push__title\"><p>Besoin d&rsquo;un prof particulier ? <span role=\"img\" aria-label=\"\u2728\">\u2728<\/span><!-- notionvc: 9b5ed38b-ea2e-4d3c-a3bb-f0091c2eedd2 --><\/p>\n<\/div>\n                                                                                        <div class=\"push__text\"><p>Nos profs sont l\u00e0 pour t&rsquo;aider \u00e0 progresser !<\/p>\n<p>&nbsp;<\/p>\n<p><!-- notionvc: 20490bdd-6579-484b-9d99-0ff0bc1aa8e7 --><\/p>\n<\/div>\n                                                        <div class=\"push__promo-button   \">\n                                                                                                    <div\n                                        class=\"btn btn-primary\"\n                                        style=\"color: ; border-color: ; background-color: \"\n\n                                    >\n                                        JE PRENDS UN COURS OFFERT !\n                                    <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                    <\/div>\n                                    <\/div>\n    <\/section>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quid-sur-le-plan-juridique-en-france\">Quid sur le plan juridique en France ? \u2696\ufe0f<\/h2>\n\n\n\n<p>En France, une pyramide de Ponzi est poursuivie comme une escroquerie : jusqu\u2019\u00e0 5 ans de prison et 375 000\u20ac d\u2019amende selon <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000006418192\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">l\u2019article 313-1 du Code p\u00e9nal<\/a>. La vente pyramidale est, elle, interdite par <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000032227258\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">l\u2019article L121-15 du Code de la consommation<\/a>, avec jusqu\u2019\u00e0 2 ans de prison et 300 000\u20ac d\u2019amende.<\/p>\n\n\n\n<p>Ces r\u00e8gles visent celui qui organise ou propose le syst\u00e8me. Pour la victime, le risque est surtout financier : <strong>perdre sa mise<\/strong>, souvent sans espoir de la r\u00e9cup\u00e9rer en totalit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pyramide-de-ponzi-au-grand-oral-et-en-ses\">Pyramide de Ponzi au Grand oral et en SES \ud83c\udf93<\/h2>\n\n\n\n<p>Tu peux traiter la pyramide de Ponzi au Grand oral, \u00e0 condition de partir d\u2019une question pr\u00e9cise reli\u00e9e \u00e0 un th\u00e8me du programme, comme la confiance, l\u2019information sur les march\u00e9s ou la r\u00e9gulation financi\u00e8re. L\u2019\u00e9preuve dure 20 minutes : 10 minutes d\u2019expos\u00e9, puis 10 minutes d\u2019\u00e9change avec le jury.<\/p>\n\n\n\n<p>Voici trois exemples de questions possibles :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pourquoi les pyramides de Ponzi trompent-elles m\u00eame des investisseurs avertis ?<\/li><li>La r\u00e9gulation financi\u00e8re peut-elle emp\u00eacher les fraudes de type Ponzi ?<\/li><li>Comment une pyramide financi\u00e8re peut-elle ruiner un pays, comme l\u2019Albanie en 1997 ?<\/li><\/ul>\n\n\n\n<p>Un plan en trois temps fonctionne bien : le m\u00e9canisme et la progression g\u00e9om\u00e9trique, les cas Madoff et Albanie, puis la pr\u00e9vention par le contr\u00f4le des march\u00e9s. Pour affiner ton sujet, lis notre guide pour <a href=\"https:\/\/sherpas.com\/blog\/question-grand-oral-ses\/\">trouver ta question de Grand oral en SES<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pour-resumer\">Pour r\u00e9sumer \ud83d\udcdd<\/h2>\n\n\n<ul class=\"list-formatted\">\n                <li data-symbol=\"\ud83d\udccc\">\n            <span>\n            <p>Un syst\u00e8me rendu c\u00e9l\u00e8bre en 1920 par un immigr\u00e9 italien aux \u00c9tats-Unis, Charles Ponzi,<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udccc\">\n            <span>\n            <p>qui fait croire \u00e0 un investissement sans risque avec des b\u00e9n\u00e9fices garantis,<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udccc\">\n            <span>\n            <p>mais qui en r\u00e9alit\u00e9 repose sur l\u2019investissement de plus de personnes et qui est vou\u00e9 \u00e0 l\u2019\u00e9chec,<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udccc\">\n            <span>\n            <p>que l\u2019on rep\u00e8re \u00e0 ses promesses de gains \u00e9lev\u00e9s et garantis,<\/p>\n\n            <\/span>\n        <\/li>\n                <li data-symbol=\"\ud83d\udccc\">\n            <span>\n            <p><span style=\"font-weight: 400\">et qui est aujourd\u2019hui interdit et puni par la loi en France.<\/span><\/p>\n\n            <\/span>\n        <\/li>\n            <\/ul>\n    \n\n\n\n<p>Et voil\u00e0, maintenant, tu sais tout sur la pyramide de Ponzi, de <strong>sa cr\u00e9ation \u00e0 son aspect juridique.<\/strong> On esp\u00e8re que ce petit guide de finance t&rsquo;a aid\u00e9 \u00e0 comprendre <strong>le danger que peut repr\u00e9senter cette escroquerie.<\/strong> Si tu souhaites en savoir plus ou que tu es int\u00e9ress\u00e9 par le sujet, contacte <a href=\"https:\/\/sherpas.com\/cours\/economie\">un de nos professeurs Sherpas d\u2019\u00e9conomie !<\/a>&nbsp;\ud83d\ude09<\/p>\n\n\n<section class=\"faq\">\n    <div class=\"container\" itemscope itemtype=\"http:\/\/schema.org\/FAQPage\">\n        <div class=\"faq__title\">\n                        <h2 id=\"faq\">FAQ<\/h2>\n                    <\/div>\n         <div class=\"faq__questions\">\n                                                                             <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Une pyramide de Ponzi est-elle l\u00e9gale en France ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Non. Une pyramide de Ponzi est une escroquerie, punie jusqu\u2019\u00e0 5 ans de prison et 375 000\u20ac d\u2019amende (article 313-1 du Code p\u00e9nal). La vente pyramidale est elle aussi interdite par le Code de la consommation (article L121-15).<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                                                 <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Quelle diff\u00e9rence entre une pyramide de Ponzi et une vente pyramidale ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Dans une pyramide de Ponzi, l\u2019organisateur promet un placement et paie les anciens avec l\u2019argent des nouveaux. Dans une vente pyramidale, chaque membre doit recruter d\u2019autres personnes pour gagner de l\u2019argent.<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                                                 <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Pourquoi une pyramide de Ponzi s\u2019effondre-t-elle toujours ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Parce qu\u2019elle doit trouver toujours plus de nouveaux investisseurs pour payer les anciens. Avec une promesse de 100% en 90 jours, ce nombre doit doubler chaque trimestre, ce qui est impossible \u00e0 tenir. Une vague de retraits suffit alors \u00e0 tout faire tomber.<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                                                 <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Quelle est la plus grosse pyramide de Ponzi jamais connue ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Selon le FBI, c\u2019est celle de Bernard Madoff, r\u00e9v\u00e9l\u00e9e en d\u00e9cembre 2008. Ses clients croyaient d\u00e9tenir environ 64,8 milliards de dollars, alors que les sommes r\u00e9ellement investies atteignaient pr\u00e8s de 17,5 milliards.<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                                                 <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Que s\u2019est-il pass\u00e9 en Albanie en 1997 ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Des pyramides financi\u00e8res se sont effondr\u00e9es d\u00e9but 1997, alors qu\u2019environ les deux tiers de la population y avaient plac\u00e9 de l\u2019argent. La crise a provoqu\u00e9 des \u00e9meutes, environ 2 000 morts et la chute du gouvernement.<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                                                 <div class=\"faq__questions--item \" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n                <div class=\"faq__questions--title  collapsed\">\n                    <p class=\"h4\" itemprop=\"name\">Peut-on parler de la pyramide de Ponzi au Grand oral ?<\/p>\n                    <svg>\n                        <use\n                        xlink:href=\"\/content\/themes\/sherpas-theme\/dist\/images\/sprite.svg#chevron-right\"\/>\n                    <\/svg>\n                <\/div>\n                <div class=\"faq__questions--content\" style=\"max-height: 0px\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n                    <div itemprop=\"text\"><p>Oui, si tu pars d\u2019une question pr\u00e9cise, par exemple sur la r\u00e9gulation financi\u00e8re ou la confiance sur les march\u00e9s. Appuie-toi sur le m\u00e9canisme chiffr\u00e9, puis sur des cas r\u00e9els comme Madoff ou l\u2019Albanie.<\/p>\n<\/div>\n                <\/div>\n             <\/div>\n                                <\/div>\n    <\/div>\n<\/section>\n\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;269690&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;6&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;4.2&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Tu as aim\u00e9 cet article ?&quot;,&quot;legend&quot;:&quot;4.2\\\/5 - (6 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Pyramide de Ponzi : d\u00e9finition, histoire et fonctionnement \ud83d\udcc9&quot;,&quot;width&quot;:&quot;119.3&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 119.3px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            4.2\/5 - (6 votes)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Tu en as s\u00fbrement d\u00e9j\u00e0 entendu parler, mais peut-\u00eatre que tu ne l\u2019as jamais vraiment \u00e9tudi\u00e9. La pyramide (&#8230;)<\/p>\n","protected":false},"author":158,"featured_media":269712,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"category":[803,807,826],"tag":[],"class_list":["post-269690","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apprendre-matiere","category-culture-generale-2","category-ses-economie-esh"],"acf":[],"_links":{"self":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts\/269690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/users\/158"}],"replies":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/comments?post=269690"}],"version-history":[{"count":0,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/posts\/269690\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/media\/269712"}],"wp:attachment":[{"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/media?parent=269690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/category?post=269690"},{"taxonomy":"tag","embeddable":true,"href":"https:\/\/sherpas.com\/blog\/wp-json\/wp\/v2\/tag?post=269690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}