{"id":154696,"date":"2025-11-07T18:00:00","date_gmt":"2025-11-07T18:00:00","guid":{"rendered":"https:\/\/cryptonews.com\/br\/?p=154696"},"modified":"2025-11-07T15:16:04","modified_gmt":"2025-11-07T15:16:04","slug":"polymarket-wash-trading","status":"publish","type":"post","link":"https:\/\/cryptonews.com\/br\/noticias\/polymarket-wash-trading\/","title":{"rendered":"Previs\u00f5es da Polymarket foram infladas por \u2018wash trading\u2019, diz pesquisa"},"content":{"rendered":"<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6-1024x576.jpg\" alt=\"\" class=\"wp-image-154697\" srcset=\"https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6-1024x576.jpg 1024w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6-300x169.jpg 300w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6-768x432.jpg 768w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6-450x253.jpg 450w, https:\/\/cimg.co\/wp-content\/uploads\/sites\/13\/2025\/11\/07151151\/image-2-6.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/figure><p class=\"wp-block-paragraph\">A plataforma de previs\u00f5es Polymarket, uma das principais plataformas cripto de previs\u00f5es, registrou uma infla\u00e7\u00e3o significativa em seu volume de negocia\u00e7\u00f5es.<\/p><p class=\"wp-block-paragraph\">Isso aconteceu devido a atividades de \u2018wash trading\u2019 artificial, segundo um novo estudo da Universidade Columbia.<\/p><p class=\"wp-block-paragraph\">Assim, o estudo afirma que a Polymarket n\u00e3o foi respons\u00e1vel diretamente pelo wash trading. No entanto, sua estrutura baseada em cripto pode ter facilitado o comportamento.<\/p><p class=\"wp-block-paragraph\">Em 2024, surgiram preocupa\u00e7\u00f5es sobre manipula\u00e7\u00e3o de mercado e wash trading na plataforma descentralizada de previs\u00f5es.<\/p><p class=\"wp-block-paragraph\">Dessa forma, pesquisadores alertaram na \u00e9poca que uma \u2018parcela significativa\u2019 da atividade do mercado virtual poderia resultar dessa pr\u00e1tica.<\/p><p class=\"wp-block-paragraph\">Wash trading \u00e9 uma t\u00e1tica em que a\u00e7\u00f5es ou contratos s\u00e3o comprados e vendidos repetidamente para criar a impress\u00e3o de um volume maior de negocia\u00e7\u00f5es.<\/p><figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">The volume of activity on Polymarket has been significantly inflated by so-called wash trading in which users rapidly buy and sell the same contracts, according to a new study by Columbia University researchers <a href=\"https:\/\/t.co\/kWTEDPn6IS\">https:\/\/t.co\/kWTEDPn6IS<\/a><\/p>&mdash; Bloomberg (@business) <a href=\"https:\/\/twitter.com\/business\/status\/1986642903733567672?ref_src=twsrc%5Etfw\">November 7, 2025<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure><h2 class=\"wp-block-heading\">Wash trading distorce a atividade real da Polymarket<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">O estudo aponta que o chamado &#8216;<a href=\"https:\/\/cryptonews.com\/br\/noticias\/ordem-de-venda-de-12-000-bitcoins-desperta-medo-de-manipulacao-de-baleias\/\" target=\"_blank\" rel=\"noreferrer noopener\">trading artificial<\/a>&#8216; representou quase 25% de todas as transa\u00e7\u00f5es de compra e venda na Polymarket nos \u00faltimos tr\u00eas anos.<\/p><p class=\"wp-block-paragraph\">Sendo assim, um representante da Polymarket disse \u00e0 Bloomberg nesta sexta-feira que a plataforma est\u00e1 analisando o estudo e, por enquanto, n\u00e3o tem coment\u00e1rios.<\/p><div class=\"su-note\" style=\"border-color:#e0d5e5;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#faefff;border-color:#ffffff;color:#333333;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\">\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\"><strong><strong>\ud83d\udc49Saiba tudo sobre as <a href=\"https:\/\/cryptonews.com\/br\/criptomoedas\/criptomoedas-promissoras\/\" target=\"_blank\" rel=\"noreferrer noopener\">criptomoedas com potencial<\/a> para 2025 e como investir nelas ainda hoje!<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p><\/div><\/div><p class=\"wp-block-paragraph\">De acordo com o algoritmo dos pesquisadores, a preval\u00eancia de wash trading foi de 45% do volume total em mercados esportivos.<\/p><p class=\"wp-block-paragraph\">Enquanto isso, a <a href=\"https:\/\/cryptonews.com\/br\/noticias\/sam-altman-nega-participacao-em-esquema-de-manipulacao-de-mercado\/\" target=\"_blank\" rel=\"noreferrer noopener\">atividade suspeita<\/a> esteve presente em 17% em mercados eleitorais, em 12% em mercados pol\u00edticos e 3% dos mercados de cripto.<\/p><p class=\"wp-block-paragraph\">\u2018Espero que a Polymarket receba bem nossa an\u00e1lise\u2019, disse Yash Kanoria, professor da Columbia Business School e coautor do estudo, \u00e0 Bloomberg.<\/p><p class=\"wp-block-paragraph\">\u2018O wash trading n\u00e3o adiciona liquidez nem informa\u00e7\u00e3o ao mercado, ent\u00e3o parece importante distinguir o volume aut\u00eantico do inaut\u00eantico.\u2019<\/p><p class=\"wp-block-paragraph\">A Polymarket atingiu recordes em outubro em volume, n\u00famero de traders ativos e lan\u00e7amento de novos mercados. A plataforma foi impulsionada pelo lan\u00e7amento de seu token nativo.<\/p><p class=\"wp-block-paragraph\">Como resultado, o volume de negocia\u00e7\u00f5es da Polymarket alcan\u00e7ou um recorde hist\u00f3rico de US$ 2,59 bilh\u00f5es em outubro.<\/p><p class=\"wp-block-paragraph\">Por outro lado, a Polymarket anunciou recentemente que captou US$ 205 milh\u00f5es em duas rodadas de investimento antes n\u00e3o reveladas.<\/p><p class=\"wp-block-paragraph\">Isso aconteceu entre 2024 e 2025, avaliando a empresa agora em US$ 1,2 bilh\u00e3o.<\/p><h2 class=\"wp-block-heading\">Precis\u00e3o e credibilidade da Polymarket<\/h2><span class=\"replacer\"><\/span><p class=\"wp-block-paragraph\">Segundo medi\u00e7\u00f5es independentes, a Polymarket mant\u00e9m mais de 95% de precis\u00e3o nas horas finais de cada mercado.<\/p><p class=\"wp-block-paragraph\">Em uma an\u00e1lise detalhada, o autor Eric Huffman, da Cryptonews, afirmou que a Polymarket \u00e9 leg\u00edtima e legal em diversos mercados l\u00edderes no mundo.<\/p><p class=\"wp-block-paragraph\">Sua principal rival, a Kalshi, tamb\u00e9m registrou um recorde mensal de volume, superando US$ 4,39 bilh\u00f5es em outubro.<\/p><p class=\"wp-block-paragraph\">De acordo com dados da Dune Analytics, Kalshi e Polymarket ultrapassaram, pela primeira vez, US$ 2 bilh\u00f5es em volume nominal na semana encerrada no dia 19 de outubro.<\/p><p class=\"wp-block-paragraph\">Nos Estados Unidos, a <a href=\"https:\/\/www.cftc.gov\/\" target=\"_blank\" rel=\"noreferrer noopener\">Comiss\u00e3o de Negocia\u00e7\u00e3o de Futuros de Commodities<\/a> (CFTC) classificou os mercados de previs\u00e3o da Polymarket como \u2018op\u00e7\u00f5es bin\u00e1rias\u2019.<\/p><p class=\"wp-block-paragraph\">Ou seja, que s\u00f3 podem ser oferecidas por bolsas registradas.<\/p><p class=\"wp-block-paragraph\">Sendo assim, essa decis\u00e3o resultou em uma multa civil de US$ 1,4 milh\u00e3o e obrigou a plataforma a restringir o acesso de usu\u00e1rios norte-americanos.<\/p><div class=\"su-note\" style=\"border-color:#e0d5e5;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#faefff;border-color:#ffffff;color:#333333;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\">\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\"><strong><strong>\ud83d\udc49Veja tamb\u00e9m: como <a href=\"https:\/\/cryptonews.com\/br\/criptomoedas\/previsao-bitcoin\/\" target=\"_blank\" rel=\"noreferrer noopener\">comprar Bitcoin no Brasil<\/a> em 2025 \u2013 Guia completo<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>A plataforma de previs\u00f5es Polymarket, uma das principais plataformas cripto de previs\u00f5es, registrou uma infla\u00e7\u00e3o significativa em seu volume de negocia\u00e7\u00f5es.Isso aconteceu devido a atividades de \u2018wash trading\u2019 artificial, segundo um novo estudo da Universidade Columbia.Assim, o estudo afirma que a Polymarket n\u00e3o foi respons\u00e1vel diretamente pelo wash trading. No entanto, sua estrutura baseada em [&hellip;]<\/p>\n","protected":false},"author":610,"featured_media":154697,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[103,95,93,2170],"editores":[1187],"sponsored_companies":[],"class_list":["post-154696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-news","tag-bitcoin","tag-criptomoedas","tag-mercado","tag-polymarket","editores-pedro-augusto"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Previs\u00f5es da Polymarket foram infladas por \u2018wash trading\u2019 - CryptoNews Brasil<\/title>\n<meta name=\"description\" content=\"Cerca de 25% dos trading realizados na Polymarket podem representar transa\u00e7\u00f5es artificiais, de acordo com pesquisa da Columbia.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cryptonews.com\/br\/noticias\/polymarket-wash-trading\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Previs\u00f5es da Polymarket foram infladas por \u2018wash trading\u2019 - 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