{
 "company": "Graham Holdings",
 "ticker": "GHC",
 "page": "https://www.moatshark.com/s/ghc",
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holders": [
  {
   "manager": "Southeastern Asset Management",
   "moatshark_slug": "southeastern-asset-management",
   "period": "2026-06-30",
   "portfolio_pct": 1.74,
   "value_usd": 33279242,
   "change": "REDUCE",
   "share_change_pct": -22.8,
   "quarters_held": 51
  },
  {
   "manager": "Markel Group",
   "moatshark_slug": "markel-group",
   "period": "2026-06-30",
   "portfolio_pct": 0.05,
   "value_usd": 5935384,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 51
  }
 ]
}