According to @CNBC, Warren Buffett’s pledge to give away 99% of his wealth could eventually test Berkshire Hathaway’s shield against activist investors, a governance overhang that is directly relevant to trading in BRK.A and BRK.B; source: CNBC tweet dated Jan 18, 2026. Berkshire Hathaway common stock trades on the NYSE under tickers BRK.A and BRK.B, making any ownership and governance developments material for price discovery and liquidity in those shares; source: Berkshire Hathaway 2023 Form 10-K. Crypto-equity spillover is also in scope as research shows higher post-2020 correlation between U.S. equities and crypto, meaning mega-cap equity volatility can influence BTC and ETH risk sentiment; source: International Monetary Fund blog Crypto Prices Move More in Sync With Stocks published Jan 2022.