According to @CNBC, Warren Buffett has characterized purchasing the original Berkshire Hathaway textile business as his biggest mistake, highlighting the high opportunity cost of misallocated capital early in his career (source: CNBC on X, Dec 25, 2025, https://twitter.com/CNBC/status/2004180978625925333). Buffett previously wrote that acquiring the struggling textile mill was a mistake and that long-term results came from reallocating capital into insurance and other businesses, creating investable float that powered compounding (source: Berkshire Hathaway 2014 Shareholder Letter, https://www.berkshirehathaway.com/letters/2014ltr.pdf). For BRK.A and BRK.B traders, the trading takeaway is to focus on Berkshire’s primary value drivers—insurance underwriting, investment income from float, and operating subsidiaries—rather than the legacy textile history when assessing intrinsic value and catalysts (source: Berkshire Hathaway 2023 Annual Report, business overview and segment discussions, https://www.berkshirehathaway.com/reports/2023ar.pdf). The source provides no direct crypto linkage or implications for BTC or ETH (source: CNBC on X, Dec 25, 2025, https://twitter.com/CNBC/status/2004180978625925333).