{
 "manager": "TCI Fund Management",
 "page": "https://www.moatshark.com/m/tci-fund-management",
 "form": "13F-HR",
 "period": "2026-06-30",
 "filed": "2026-08-14",
 "previous_period": "2026-03-31",
 "filing_url": "https://www.sec.gov/Archives/edgar/data/1647251/000164725126000007/0001647251-26-000007-index.htm",
 "total_value_usd": 52769884406,
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holdings": [
  {
   "company": "GE Aerospace",
   "ticker": "GE",
   "moatshark_slug": "ge",
   "sector": "Industrials",
   "value_usd": 17725353519,
   "shares": 47428233,
   "portfolio_pct": 33.59,
   "previous_pct": 29.85,
   "change": "REDUCE",
   "share_change_pct": -0.2,
   "quarters_held": 14
  },
  {
   "company": "Visa",
   "ticker": "V",
   "moatshark_slug": "v",
   "sector": "Financials",
   "value_usd": 10462232091,
   "shares": 30494133,
   "portfolio_pct": 19.83,
   "previous_pct": 20.39,
   "change": "ADD",
   "share_change_pct": 0.1,
   "quarters_held": 29
  },
  {
   "company": "Moody's",
   "ticker": "MCO",
   "moatshark_slug": "mco",
   "sector": "Financials",
   "value_usd": 6492167509,
   "shares": 14334027,
   "portfolio_pct": 12.3,
   "previous_pct": 13.84,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "company": "S&P Global",
   "ticker": "SPGI",
   "moatshark_slug": "spgi",
   "sector": "Financials",
   "value_usd": 5735017808,
   "shares": 14081957,
   "portfolio_pct": 10.87,
   "previous_pct": 13.22,
   "change": "ADD",
   "share_change_pct": 0.3,
   "quarters_held": 38
  },
  {
   "company": "Alphabet",
   "ticker": "GOOG",
   "moatshark_slug": "goog",
   "sector": "Communication and media",
   "value_usd": 4389741007,
   "shares": 12395819,
   "portfolio_pct": 8.32,
   "previous_pct": 7.19,
   "change": "ADD",
   "share_change_pct": 9.6,
   "quarters_held": 36
  },
  {
   "company": "Canadian Pacific Kansas City",
   "ticker": "CP",
   "moatshark_slug": "cp",
   "sector": "Industrials",
   "value_usd": 3925911608,
   "shares": 45325726,
   "portfolio_pct": 7.44,
   "previous_pct": 8.1,
   "change": "REDUCE",
   "share_change_pct": -2.6,
   "quarters_held": 13
  },
  {
   "company": "Ferrovial",
   "ticker": "FER",
   "moatshark_slug": "fer",
   "sector": "Industrials",
   "value_usd": 1434611939,
   "shares": 20940441,
   "portfolio_pct": 2.72,
   "previous_pct": 2.94,
   "change": "ADD",
   "share_change_pct": 1,
   "quarters_held": 9
  },
  {
   "company": "Canadian National Railway",
   "ticker": "CNI",
   "moatshark_slug": "cni",
   "sector": "Industrials",
   "value_usd": 1124534915,
   "shares": 9433422,
   "portfolio_pct": 2.13,
   "previous_pct": 2.24,
   "change": "REDUCE",
   "share_change_pct": -4.2,
   "quarters_held": 32
  },
  {
   "company": "Martin Marietta Materials Ord",
   "ticker": "MLM",
   "moatshark_slug": "mlm",
   "sector": "Materials",
   "value_usd": 758423360,
   "shares": 1315109,
   "portfolio_pct": 1.44,
   "previous_pct": null,
   "change": "NEW",
   "share_change_pct": null,
   "quarters_held": 1
  },
  {
   "company": "Vulcan Materials Ord",
   "ticker": "VMC",
   "moatshark_slug": "vmc",
   "sector": "Materials",
   "value_usd": 721890650,
   "shares": 2447004,
   "portfolio_pct": 1.37,
   "previous_pct": null,
   "change": "NEW",
   "share_change_pct": null,
   "quarters_held": 1
  },
  {
   "company": "Microsoft",
   "ticker": "MSFT",
   "moatshark_slug": "msft",
   "sector": "Technology",
   "value_usd": 0,
   "shares": 0,
   "portfolio_pct": 0,
   "previous_pct": 2.24,
   "change": "EXIT",
   "share_change_pct": null,
   "quarters_held": 10
  }
 ]
}