华尔街投行罕见下调伯克希尔哈撒韦评级至“跑输大盘”，担忧接班人及盈利问题

Core Viewpoint - Keefe, Bruyette & Woods downgraded Berkshire Hathaway's Class A shares from "in line with the market" to "underperform," citing multiple factors moving in the wrong direction [1] Summary by Relevant Categories Analyst Ratings - The downgrade marks the only "sell" rating among six analysts covering the company tracked by Bloomberg [1] Concerns - Analyst Meyer Shields expressed concerns over macroeconomic uncertainty and succession risk, indicating that these factors contribute to the stock's potential underperformance [1] - The report highlights the emergence and/or persistence of earnings pressure as a significant factor affecting the stock's outlook [1]