{
 "company": "Berkshire Hathaway",
 "ticker": "BRK.B",
 "page": "https://www.moatshark.com/s/brk-b",
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holders": [
  {
   "manager": "Punch Card Management",
   "moatshark_slug": "punch-card-management",
   "period": "2026-06-30",
   "portfolio_pct": 42.42,
   "value_usd": 108583250,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 47
  },
  {
   "manager": "Chou Associates",
   "moatshark_slug": "chou-associates",
   "period": "2026-06-30",
   "portfolio_pct": 30.45,
   "value_usd": 65952289,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "manager": "Semper Augustus",
   "moatshark_slug": "semper-augustus",
   "period": "2026-06-30",
   "portfolio_pct": 25.61,
   "value_usd": 226541027,
   "change": "ADD",
   "share_change_pct": 7.9,
   "quarters_held": 53
  },
  {
   "manager": "H&H International (Duan Yongping)",
   "moatshark_slug": "h-h-international-duan-yongping",
   "period": "2026-06-30",
   "portfolio_pct": 24.18,
   "value_usd": 4618447581,
   "change": "ADD",
   "share_change_pct": 0.9,
   "quarters_held": 31
  },
  {
   "manager": "Gates Foundation Trust",
   "moatshark_slug": "gates-foundation-trust",
   "period": "2026-06-30",
   "portfolio_pct": 21.35,
   "value_usd": 7350651039,
   "change": "REDUCE",
   "share_change_pct": -13.8,
   "quarters_held": 53
  },
  {
   "manager": "Gardner Russo & Quinn",
   "moatshark_slug": "gardner-russo-quinn",
   "period": "2026-06-30",
   "portfolio_pct": 18.06,
   "value_usd": 1612456152,
   "change": "REDUCE",
   "share_change_pct": -2.8,
   "quarters_held": 53
  },
  {
   "manager": "Himalaya Capital",
   "moatshark_slug": "himalaya-capital",
   "period": "2026-06-30",
   "portfolio_pct": 14.98,
   "value_usd": 554591244,
   "change": "ADD",
   "share_change_pct": 23.5,
   "quarters_held": 20
  },
  {
   "manager": "Greenlea Lane Capital",
   "moatshark_slug": "greenlea-lane-capital",
   "period": "2026-06-30",
   "portfolio_pct": 12.95,
   "value_usd": 47177550,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 11
  },
  {
   "manager": "Markel Group",
   "moatshark_slug": "markel-group",
   "period": "2026-06-30",
   "portfolio_pct": 12.19,
   "value_usd": 1600801869,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "manager": "Tweedy, Browne",
   "moatshark_slug": "tweedy-browne",
   "period": "2026-06-30",
   "portfolio_pct": 11.87,
   "value_usd": 156684974,
   "change": "ADD",
   "share_change_pct": 0.2,
   "quarters_held": 53
  },
  {
   "manager": "Weitz Investment Management",
   "moatshark_slug": "weitz-investment-management",
   "period": "2026-06-30",
   "portfolio_pct": 9.41,
   "value_usd": 135905924,
   "change": "REDUCE",
   "share_change_pct": -2.6,
   "quarters_held": 53
  },
  {
   "manager": "Yacktman Asset Management",
   "moatshark_slug": "yacktman-asset-management",
   "period": "2026-06-30",
   "portfolio_pct": 7.19,
   "value_usd": 581217997,
   "change": "ADD",
   "share_change_pct": 268.8,
   "quarters_held": 53
  },
  {
   "manager": "Muhlenkamp & Company",
   "moatshark_slug": "muhlenkamp-company",
   "period": "2026-06-30",
   "portfolio_pct": 5.58,
   "value_usd": 19262513,
   "change": "ADD",
   "share_change_pct": 0.4,
   "quarters_held": 26
  },
  {
   "manager": "Giverny Capital",
   "moatshark_slug": "giverny-capital",
   "period": "2026-06-30",
   "portfolio_pct": 4.41,
   "value_usd": 131060044,
   "change": "REDUCE",
   "share_change_pct": -34.4,
   "quarters_held": 39
  },
  {
   "manager": "Davis Selected Advisers",
   "moatshark_slug": "davis-selected-advisers",
   "period": "2026-06-30",
   "portfolio_pct": 4.38,
   "value_usd": 1019524855,
   "change": "REDUCE",
   "share_change_pct": -1.5,
   "quarters_held": 53
  },
  {
   "manager": "Ruane, Cunniff & Goldfarb (Sequoia)",
   "moatshark_slug": "ruane-cunniff-goldfarb-sequoia",
   "period": "2026-06-30",
   "portfolio_pct": 3.54,
   "value_usd": 227584812,
   "change": "REDUCE",
   "share_change_pct": -3.1,
   "quarters_held": 53
  },
  {
   "manager": "Fairholme Capital Management",
   "moatshark_slug": "fairholme-capital-management",
   "period": "2026-06-30",
   "portfolio_pct": 3.5,
   "value_usd": 52197612,
   "change": "ADD",
   "share_change_pct": 74.1,
   "quarters_held": 30
  },
  {
   "manager": "First Eagle Investment Management",
   "moatshark_slug": "first-eagle-investment-management",
   "period": "2026-06-30",
   "portfolio_pct": 0.75,
   "value_usd": 456939739,
   "change": "ADD",
   "share_change_pct": 17.2,
   "quarters_held": 53
  },
  {
   "manager": "Matrix Asset Advisors",
   "moatshark_slug": "matrix-asset-advisors",
   "period": "2026-09-30",
   "portfolio_pct": 0.52,
   "value_usd": 6296578,
   "change": "ADD",
   "share_change_pct": 8.6,
   "quarters_held": 54
  },
  {
   "manager": "Horizon Kinetics",
   "moatshark_slug": "horizon-kinetics",
   "period": "2026-06-30",
   "portfolio_pct": 0.22,
   "value_usd": 19378870,
   "change": "REDUCE",
   "share_change_pct": -2.1,
   "quarters_held": 30
  },
  {
   "manager": "Mairs & Power",
   "moatshark_slug": "mairs-power",
   "period": "2026-06-30",
   "portfolio_pct": 0.14,
   "value_usd": 15548450,
   "change": "REDUCE",
   "share_change_pct": -1.4,
   "quarters_held": 53
  },
  {
   "manager": "Biglari Capital",
   "moatshark_slug": "biglari-capital",
   "period": "2026-06-30",
   "portfolio_pct": 0.13,
   "value_usd": 1497700,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 39
  },
  {
   "manager": "Akre Capital Management",
   "moatshark_slug": "akre-capital-management",
   "period": "2026-06-30",
   "portfolio_pct": 0.08,
   "value_usd": 4095192,
   "change": "REDUCE",
   "share_change_pct": -20.8,
   "quarters_held": 53
  },
  {
   "manager": "Fairfax Financial Holdings",
   "moatshark_slug": "fairfax-financial-holdings",
   "period": "2026-06-30",
   "portfolio_pct": 0.03,
   "value_usd": 748836,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "manager": "Harris Associates (Oakmark)",
   "moatshark_slug": "harris-associates-oakmark",
   "period": "2026-06-30",
   "portfolio_pct": 0.02,
   "value_usd": 12636349,
   "change": "REDUCE",
   "share_change_pct": -0.7,
   "quarters_held": 27
  },
  {
   "manager": "Dodge & Cox",
   "moatshark_slug": "dodge-cox",
   "period": "2026-06-30",
   "portfolio_pct": 0,
   "value_usd": 8719862,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  }
 ]
}