Bitcoin and other risk assets have become increasingly sensitive to statements from U.S. President Donald Trump, with markets often swinging upward or downward within minutes of his social media posts or policy announcements to the news media. This has drawn scrutiny from lawmakers, academics and market experts, as questions mount over whether those price movements have created lucrative opportunities for market manipulation or insider trading. A recent University of Oxford Faculty of Law study found sharp swings in global markets following rapid changes in U.S. tariff policy, including a sequence in which prices across crypto and stock markets fell after new tariffs were announced, then rebounded after Trump partially rolled them back days later. The scale and timing of those moves, the author noted, created “fantastic trading opportunities” for anyone with advanced knowledge of the decisions. Also, those back-and-forth decisions by Trump have been widely criticized and called the Trump Again Chickens Out (TACO) dynamic. The issue gained further attention after Trump posted “THIS IS A GREAT TIME TO BUY!! on Truth Social in April 2025 shortly before announcing a tariff adjustment that sent markets higher, prompting calls from lawmakers, including Senator Adam Schiff, for an investigation into potential insider trading or market manipulation. Analysts, experts and media reports have highlighted patterns of large, well-timed trades across commodities and prediction markets, in some cases placed minutes before major policy or military announcements. “Many experts say the Trump administration has engaged in market manipulation,” according to a March episode of CBC’s Front Burner, which pointed to unusually massively profitable trades in oil futures ahead of announcements related to the war with Iran. Democratic Congressman Stephen Lynch raised similar concerns. He said trading activity tied to major Trump announcements “raised serious concerns about insider tradi