禁止机构“买房”、限制军工“分红”，特朗普帖子搅动美股

Core Viewpoint - The recent social media posts by President Trump have caused significant volatility in the U.S. stock market, particularly affecting the housing and defense sectors due to policy uncertainty [2][4]. Housing Sector - Trump announced plans to "immediately" prohibit large institutional investors from purchasing single-family homes, aiming to address housing affordability issues. This announcement led to panic selling in related stocks, including major private equity firms and large rental companies [2][4]. - The stock prices of major residential real estate investors like Blackstone and Invitation Homes saw significant declines, with Blackstone dropping as much as 9.3% during trading [6]. - Analysts express skepticism regarding the actual impact of institutional investors on housing affordability, noting that the largest 24 single-family rental owners only account for about 3.5% of the total rental market [10]. Defense Sector - Following the housing announcement, Trump targeted defense contractors, warning them against paying dividends or repurchasing stocks unless they accelerate production and maintenance of military equipment. This led to a decline in defense stocks, including RTX Corp. [8]. - However, after announcing a proposed military budget of $1.5 trillion for 2027, defense stocks rebounded in after-hours trading, indicating a mixed market reaction to Trump's statements [8][10]. Market Reaction - The S&P 500 index experienced a decline of 0.3% after initially approaching the 7000-point mark, reflecting the market's struggle to interpret the implications of Trump's rapid-fire social media communications [2][10]. - Market analysts highlighted the challenges of digesting information released directly via social media without any buffering, suggesting that this could lead to dangerous market adjustments [10].