{
 "company": "American Tower",
 "ticker": "AMT",
 "page": "https://www.moatshark.com/s/amt",
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holders": [
  {
   "manager": "Akre Capital Management",
   "moatshark_slug": "akre-capital-management",
   "period": "2026-06-30",
   "portfolio_pct": 0.09,
   "value_usd": 4785077,
   "change": "REDUCE",
   "share_change_pct": -42.4,
   "quarters_held": 53
  },
  {
   "manager": "Davis Selected Advisers",
   "moatshark_slug": "davis-selected-advisers",
   "period": "2026-06-30",
   "portfolio_pct": 0.04,
   "value_usd": 10345803,
   "change": "REDUCE",
   "share_change_pct": -2.1,
   "quarters_held": 21
  },
  {
   "manager": "Cantillon Capital Management",
   "moatshark_slug": "cantillon-capital-management",
   "period": "2026-06-30",
   "portfolio_pct": 0,
   "value_usd": 0,
   "change": "EXIT",
   "share_change_pct": null,
   "quarters_held": 41
  },
  {
   "manager": "Horizon Kinetics",
   "moatshark_slug": "horizon-kinetics",
   "period": "2026-06-30",
   "portfolio_pct": 0,
   "value_usd": 228998,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 30
  },
  {
   "manager": "Mairs & Power",
   "moatshark_slug": "mairs-power",
   "period": "2026-06-30",
   "portfolio_pct": 0,
   "value_usd": 330411,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 34
  }
 ]
}