{"id":52780,"date":"2026-08-21T08:33:03","date_gmt":"2026-08-21T08:33:03","guid":{"rendered":"https:\/\/www.vtmarkets.com\/pt-eu\/uncategorized\/usdx-slides-as-treasury-buyback-shifts-market-sentiment\/"},"modified":"2026-08-21T08:33:03","modified_gmt":"2026-08-21T08:33:03","slug":"usdx-slides-as-treasury-buyback-shifts-market-sentiment","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/pt-eu\/analysis\/usdx-slides-as-treasury-buyback-shifts-market-sentiment\/","title":{"rendered":"USDX recua \u00e0 medida que recompra do Tesouro muda o sentimento do mercado"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/07\/usdx-2.webp\" alt=\"usdx\" class=\"wp-image-62430\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pontos-chave:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O d\u00f3lar norte-americano enfraqueceu depois de o Tesouro dos EUA anunciar a expans\u00e3o das recompras de obriga\u00e7\u00f5es com prazos mais longos.<\/li>\n\n\n\n<li>A descida das <strong>yields<\/strong> (taxas de rendibilidade) das obriga\u00e7\u00f5es do Tesouro a longo prazo pressionou o d\u00f3lar, levando os investidores a reavaliar o interesse por ativos dos EUA.<\/li>\n\n\n\n<li>O plano de recompra levantou d\u00favidas sobre a evolu\u00e7\u00e3o futura das yields. Alguns analistas consideram a medida negativa para o sentimento em torno do d\u00f3lar.<\/li>\n\n\n\n<li>O USDX negoceia perto dos <strong>98,68<\/strong>, depois de cair para m\u00ednimos recentes. O mercado avalia se o \u00edndice consegue estabilizar.<\/li>\n\n\n\n<li>Os mercados acompanham as mensagens da Reserva Federal, as condi\u00e7\u00f5es do mercado de obriga\u00e7\u00f5es do Tesouro e os pr\u00f3ximos dados econ\u00f3micos.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">O USDX voltou a ficar sob press\u00e3o ap\u00f3s o Tesouro dos EUA anunciar a expans\u00e3o das opera\u00e7\u00f5es de recompra de obriga\u00e7\u00f5es com prazos mais longos, o que levou os investidores a reverem as perspetivas para as yields e para a moeda.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">The dollar tumbled by the most in three weeks to its weakest level since mid-May after the bond market rallied on the US Treasury Department\u2019s unexpected announcement that it is increasing buybacks of long-dated bonds. <a href=\"https:\/\/t.co\/v6jPvErNz9\">https:\/\/t.co\/v6jPvErNz9<\/a><\/p>&mdash; Bloomberg (@business) <a href=\"https:\/\/x.com\/business\/status\/2090131714349662634?ref_src=twsrc%5Etfw\">August 19, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O an\u00fancio ajudou a aliviar a press\u00e3o no segmento de longo prazo do mercado de Treasuries (obriga\u00e7\u00f5es do Tesouro dos EUA), fazendo descer as yields. No entanto, yields mais baixas reduziram o apoio ao d\u00f3lar, porque rendibilidades menores tendem a diminuir a procura pela moeda. Com isso, o USDX aproximou-se de m\u00ednimos de tr\u00eas meses.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Porque \u00e9 que os traders est\u00e3o atentos ao d\u00f3lar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O movimento mostra que o d\u00f3lar est\u00e1 mais sens\u00edvel a altera\u00e7\u00f5es na pol\u00edtica do Tesouro e \u00e0s condi\u00e7\u00f5es financeiras no geral.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Fed Chair Kevin Warsh has pledged price stability, but Treasury Secretary Scott Bessent\u2019s decision to double buybacks of longer-dated debt may complicate those efforts. Questions are mounting over how closely the two are coordinating, economist Gregory Daco says <a href=\"https:\/\/t.co\/Nbcw1uv8Md\">pic.twitter.com\/Nbcw1uv8Md<\/a><\/p>&mdash; Reuters (@Reuters) <a href=\"https:\/\/x.com\/Reuters\/status\/2090486519278796902?ref_src=twsrc%5Etfw\">August 20, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para l\u00e1 da rea\u00e7\u00e3o imediata, os investidores avaliam se uma interven\u00e7\u00e3o maior do Tesouro pode afetar a perce\u00e7\u00e3o sobre a pol\u00edtica or\u00e7amental dos EUA e a estabilidade do mercado no longo prazo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A aten\u00e7\u00e3o passa agora para as expectativas sobre a Reserva Federal, os dados econ\u00f3micos e a evolu\u00e7\u00e3o do mercado obrigacionista, fatores que podem influenciar o d\u00f3lar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">N\u00edveis-chave de negocia\u00e7\u00e3o<\/h2>\n\n\n\n<!-- TradingView Widget BEGIN --><div class=\"tradingview-widget-container\">  <div class=\"tradingview-widget-container__widget\"><\/div>  <div class=\"tradingview-widget-copyright\"><a href=\"https:\/\/www.tradingview.com\/symbols\/VANTAGE-USDX\/\" rel=\"noopener nofollow\" target=\"_blank\"><span class=\"blue-text\">USDX chart<\/span><\/a><span class=\"trademark\"> by TradingView<\/span><\/div>  <script type=\"text\/javascript\" src=\"https:\/\/s3.tradingview.com\/external-embedding\/embed-widget-advanced-chart.js\" async>  {  \"allow_symbol_change\": true,  \"calendar\": false,  \"details\": false,  \"hide_side_toolbar\": true,  \"hide_top_toolbar\": false,  \"hide_legend\": false,  \"hide_volume\": false,  \"hotlist\": false,  \"interval\": \"D\",  \"locale\": \"en\",  \"save_image\": true,  \"style\": \"1\",  \"symbol\": \"VANTAGE:USDX\",  \"theme\": \"dark\",  \"timezone\": \"Etc\/UTC\",  \"backgroundColor\": \"#0F0F0F\",  \"gridColor\": \"rgba(242, 242, 242, 0.2)\",  \"watchlist\": [],  \"withdateranges\": false,  \"compareSymbols\": [],  \"support_host\": \"https:\/\/www.tradingview.com\",  \"studies\": [],  \"width\": 900,  \"height\": 500}  <\/script><\/div><!-- TradingView Widget END -->\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>N\u00edvel de pre\u00e7o<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>O que o mercado est\u00e1 a observar<\/strong><\/td><\/tr><tr><td>99<\/td><td>Resist\u00eancia psicol\u00f3gica se o USDX prolongar a recupera\u00e7\u00e3o<\/td><\/tr><tr><td>98,75<\/td><td>M\u00e1ximo intradi\u00e1rio recente e resist\u00eancia imediata<\/td><\/tr><tr><td>98,68<\/td><td>Zona atual de negocia\u00e7\u00e3o e refer\u00eancia de curto prazo<\/td><\/tr><tr><td>98,67<\/td><td>Zona da m\u00e9dia m\u00f3vel de curto prazo (m\u00e9dia do pre\u00e7o ao longo de um per\u00edodo recente)<\/td><\/tr><tr><td>98,65<\/td><td>M\u00ednimo recente e suporte imediato<\/td><\/tr><tr><td>98,5<\/td><td>Zona de suporte se a press\u00e3o vendedora regressar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O USDX negoceia perto de <strong>98,68<\/strong>, ap\u00f3s recuperar do m\u00ednimo da sess\u00e3o em <strong>98,65<\/strong>, com o pre\u00e7o a regressar \u00e0 zona da <strong>m\u00e9dia m\u00f3vel<\/strong> (indicador que suaviza as oscila\u00e7\u00f5es do pre\u00e7o) de curto prazo, perto de <strong>98,67<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma subida acima de <strong>98,75<\/strong> pode sinalizar melhoria do <strong>momentum<\/strong> (for\u00e7a do movimento do pre\u00e7o) no curto prazo, colocando em destaque a resist\u00eancia em <strong>99,00<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Em baixa, uma quebra abaixo de <strong>98,65<\/strong> pode indicar novo aumento da press\u00e3o vendedora, com a zona de suporte em <strong>98,50<\/strong> como pr\u00f3ximo n\u00edvel a acompanhar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cen\u00e1rios de alta e de baixa<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/08\/usdx218-1024x473.webp\" alt=\"usdx\" class=\"wp-image-65733\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Cen\u00e1rio<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Condi\u00e7\u00e3o<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Rea\u00e7\u00e3o poss\u00edvel do mercado<\/strong><\/td><\/tr><tr><td>Tentativa de recupera\u00e7\u00e3o<\/td><td>Manter acima de 98,65<\/td><td>O USDX pode voltar a testar a resist\u00eancia em 98,75<\/td><\/tr><tr><td>Rutura em alta<\/td><td>Quebra acima de 98,75<\/td><td>O movimento pode ganhar for\u00e7a em dire\u00e7\u00e3o a 99,00<\/td><\/tr><tr><td>Consolida\u00e7\u00e3o em intervalo<\/td><td>Manter entre 98,65 e 98,75<\/td><td>O USDX pode ficar lateral, enquanto o mercado procura dire\u00e7\u00e3o<\/td><\/tr><tr><td>Quebra em baixa<\/td><td>Cair abaixo de 98,65<\/td><td>A press\u00e3o vendedora pode aumentar em dire\u00e7\u00e3o a 98,50<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O <strong>cen\u00e1rio de alta<\/strong> depende de o USDX segurar o suporte acima de <strong>98,65<\/strong> e recuperar para <strong>98,75<\/strong>. Uma subida sustentada acima desta resist\u00eancia pode indicar mais for\u00e7a no curto prazo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O <strong>cen\u00e1rio de baixa<\/strong> ganha import\u00e2ncia se o USDX cair abaixo de <strong>98,65<\/strong>, o que pode sinalizar fraqueza cont\u00ednua e abrir espa\u00e7o para o suporte em <strong>98,50<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Aviso<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Os n\u00edveis e cen\u00e1rios refletem a avalia\u00e7\u00e3o do autor no momento da escrita. N\u00e3o s\u00e3o aconselhamento financeiro nem uma recomenda\u00e7\u00e3o oficial da VT Markets. Os mercados podem mexer rapidamente devido a geopol\u00edtica, altera\u00e7\u00f5es na oferta e fatores macroecon\u00f3micos (dados e tend\u00eancias da economia no seu todo).<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Negociar CFDs sobre o \u00cdndice do D\u00f3lar com a VT Markets<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O USDX tende a ganhar movimento quando as expectativas sobre a Reserva Federal, os riscos de infla\u00e7\u00e3o, o pre\u00e7o do petr\u00f3leo, a geopol\u00edtica e os fluxos cambiais globais se cruzam.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na VT Markets, \u00e9 poss\u00edvel negociar <strong>CFDs<\/strong> (contratos por diferen\u00e7a: instrumentos que replicam a varia\u00e7\u00e3o do pre\u00e7o sem comprar o ativo) sobre o USDX, a par de pares cambiais principais, ouro, petr\u00f3leo, \u00edndices, a\u00e7\u00f5es, ETF e outros mercados globais.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Isto permite acompanhar o d\u00f3lar e comparar o que acontece em USDJPY, EURUSD, XAUUSD e nos mercados de energia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use as ferramentas de gr\u00e1ficos da VT Markets para acompanhar <strong>suporte<\/strong> (zona onde a queda tende a abrandar), <strong>resist\u00eancia<\/strong> (zona onde a subida tende a travar), m\u00e9dias m\u00f3veis e <strong>breakouts<\/strong> (quebras de n\u00edveis importantes) \u00e0 medida que o pr\u00f3ximo cen\u00e1rio para o USDX se desenvolve.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comece a <a href=\"https:\/\/www.vtmarkets.com\/indices\/\" target=\"_blank\" rel=\"noopener\" title=\"\">negociar \u00edndices<\/a> com a VT Markets hoje.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Porqu\u00ea negociar CFDs sobre o \u00cdndice do D\u00f3lar com a VT Markets?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os <strong>CFDs<\/strong> sobre o USDX permitem tirar partido de subidas ou descidas do \u00edndice do d\u00f3lar sem deter o cabaz de moedas subjacente (o conjunto de moedas que comp\u00f5e o \u00edndice).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta flexibilidade \u00e9 \u00fatil quando o d\u00f3lar reage depressa \u00e0s expectativas sobre a Reserva Federal, sinais de infla\u00e7\u00e3o, movimentos no pre\u00e7o do petr\u00f3leo, geopol\u00edtica e procura por <strong>ativos de ref\u00fagio<\/strong> (investimentos vistos como mais seguros em momentos de incerteza).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se o USDX quebrar resist\u00eancias, \u00e9 poss\u00edvel acompanhar uma continua\u00e7\u00e3o em alta. Se perder for\u00e7a, pode-se avaliar cen\u00e1rios de queda.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na VT Markets, \u00e9 poss\u00edvel acompanhar o USDX em tempo real e compar\u00e1-lo com outros mercados de CFDs atrav\u00e9s de uma \u00fanica conta.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que acompanhar a seguir<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O pr\u00f3ximo movimento do USDX vai depender de como o mercado avalia a pol\u00edtica do Tesouro, as expectativas sobre a Reserva Federal e a procura por d\u00f3lares.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fatores a ter em conta:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rea\u00e7\u00e3o do mercado de Treasuries:<\/strong> se as recompras de obriga\u00e7\u00f5es d\u00e3o suporte duradouro \u00e0s yields de longo prazo.<\/li>\n\n\n\n<li><strong>Comunica\u00e7\u00e3o da Reserva Federal:<\/strong> coment\u00e1rios que podem mexer com as expetativas para as taxas de juro.<\/li>\n\n\n\n<li><strong>Dados econ\u00f3micos dos EUA:<\/strong> indicadores de infla\u00e7\u00e3o e crescimento que influenciam a moeda.<\/li>\n\n\n\n<li><strong>Yields dos Treasuries:<\/strong> novos movimentos nas obriga\u00e7\u00f5es \u00e0 medida que os investidores reavaliam os ativos dos EUA.<\/li>\n\n\n\n<li><strong>Sentimento no mercado cambial:<\/strong> se a fraqueza recente continua face \u00e0s principais moedas.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Do ponto de vista t\u00e9cnico, o mercado observa se o <strong>USDX consegue voltar a 98,75<\/strong>, enquanto <strong>98,65<\/strong> continua a ser o principal suporte de curto prazo se a press\u00e3o em baixa regressar.<\/p>\n\n\n\n\n<p class=\"wp-block-paragraph\"><b>Comece a negociar agora \u2014 clique <a href=\"https:\/\/www.vtmarkets.com\/pt-eu\/trade-now\/\">aqui<\/a> para criar a sua conta real da VT Markets.<\/b>\n\n<\/p>","protected":false},"excerpt":{"rendered":"<p>O USDX afunda ap\u00f3s o Tesouro dos EUA expandir recompras de d\u00edvida longa, fazendo cair as yields. Com o \u00edndice nos 98,68, traders seguem Fed, Treasuries e n\u00edveis 98,75\/98,65.<\/p>\n","protected":false},"author":87,"featured_media":52779,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-52780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analysis"],"acf":{"acf_article_selection_author":null},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"O USDX afunda ap\u00f3s o Tesouro dos EUA expandir recompras de d\u00edvida longa, fazendo cair as yields. 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