Investing legend Warren Buffett has made numerous blockbuster bets on stocks during his time leading Berkshire Hathaway Inc (NYSE:BRK)(NYSE:BRK) . One of the more recent ones included raising the conglomerate's position in a leading insurance stock in the third quarter this year. The move appears to have paid off.Buffett's Insurance Bet GainsWith less than a month left in 2025, there is a good chance that Berkshire Hathaway stock underperforms the S&P 500, which is tracked by the SPDR S&P 500 ETF Trust (NYS ...