Core Viewpoint - KBW downgraded Berkshire Hathaway's Class A shares from "Market Perform" to "Underperform" due to factors such as peak underwriting profit margins at GEICO, declining short-term interest rates, and tariff-related pressures [1] Group 1: Rating Changes - Berkshire Hathaway's Class A shares and Class B shares fell by 0.79% and 0.82% respectively on Monday [1] - Analyst Meyer Shields expressed concerns that GEICO's underwriting profit margins may have peaked, alongside other pressures affecting the company's performance [1] Group 2: Earnings Forecast Adjustments - KBW adjusted the target price for Berkshire Hathaway's Class A shares from $740,000 to $700,000 [1] - The 2025 EPS forecast was slightly increased from $31,725 to $31,750, while the 2026 and 2027 EPS forecasts were reduced from $32,430 and $34,430 to $31,750 and $33,350 respectively [1] - The downward adjustments were attributed to expectations of reduced catastrophe losses in the property and casualty sector, declining investment income from insurance, slowing revenue growth in the railroad business, and potential reductions in energy tax credits [1]