Warren Buffett runs Berkshire Hathaway, a conglomerate overseeing $274.16B in disclosed equity holdings (SEC CIK 0001067983). The latest portfolio (2025Q4) discloses 42 positions across 10 sectors, with the largest positions in AAPL, AXP and BAC. On a mark-to-market basis the tracked portfolio has returned 13.6% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Methodology: TWR tiles chain-link quarterly mark-to-market across consecutive filings (GIPS-compliant) · actual tiles use a real 13F snapshot marked to today · backtest tiles re-price the current book to historical prices.
We mark Warren Buffett (Berkshire Hathaway)'s disclosed portfolio to current market prices and compare its growth against the S&P 500 (SPY). Warren’s portfolio is 13.6% over the last 12 months · 96.0% since 2016Q1.