ChainCatcher news, billionaire hedge fund founder Steve Cohen, founder of Point72, stated during a speech in Miami that U.S. stocks may experience a significant adjustment due to the policies of the Trump administration. Cohen expects that in the second half of 2025, the growth rate of the U.S. economy will slow from 2.5% to 1.5%, marking "the first time in a while that I feel very negative."Cohen pointed out that the tariff policies of the Trump administration are essentially a form of taxation, which could provoke international trade retaliation; at the same time, immigration restrictions will affect labor force growth, and the anti-corruption initiatives of the Department of Government Efficiency (DOGE) are essentially contractionary policies. These factors combined will have a negative impact on the economy. Against the backdrop of the S&P 500 index rising over 50% since the beginning of 2023 and Nvidia's increase of 800%, current market valuations are at historical highs, with most investors, including hedge funds and retail investors, holding near-maximum positions, leading to significant downside risks in the market.It is reported that Point72 is known as "Wall Street's craziest money-making machine," and Cohen has been named by U.S. media as the most influential trader in Wall Street history. He is also the inspiration for the character Bobby Axelrod, a financial tycoon in the popular American TV series "Billions." Analysis from Goldman Sachs' trading department shows that if stocks fall by 10% within a month, it could trigger about $200 billion in systemic selling, with one-third coming from the U.S. market.