On October 14, 2025, analysis of Berkshire Hathaway's recent $6 billion stake in Chubb has brought the company's overall valuation into focus. Over the past year, Berkshire Hathaway's stock has seen a 7.8% increase, with a 9.3% gain year-to-date. Despite minor recent dips, the company's long-term growth remains substantial, with a 135.4% return over five years. Current valuation models suggest that Berkshire Hathaway may be undervalued. An Excess Returns model indicates that the company's intrinsic value could be about 32.0% higher than its current market price, supported by a stable book value estimated at $495,490.17 per share. This analysis comes as the market continues to process Berkshire's earlier acquisition of Occidental Petroleum's chemical division, a move seen as a strategic win-win for both companies.