BERKSHIRE HATHAWAY INC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q4 2025, the fund manages $274.2B in reported equity holdings across 42 positions. The largest holdings are AAPL (22.6%), AXP (20.5%), BAC (10.4%), KO (10.2%), CVX (7.2%). The portfolio is concentrated in Other (86.5%), Financial Services (10.4%), Communication Services (3.1%). Data sourced from SEC EDGAR 13F filings (CIK 1067983).