{
 "manager": "Weitz Investment Management",
 "page": "https://www.moatshark.com/m/weitz-investment-management",
 "form": "13F-HR",
 "period": "2026-06-30",
 "filed": "2026-08-12",
 "previous_period": "2026-03-31",
 "filing_url": "https://www.sec.gov/Archives/edgar/data/883965/000182126826000133/0001821268-26-000133-index.htm",
 "total_value_usd": 1444222377,
 "note": "Source: SEC filings via moatshark. Values and changes are estimates; not investment advice.",
 "holdings": [
  {
   "company": "Berkshire Hathaway",
   "ticker": "BRK.B",
   "moatshark_slug": "brk-b",
   "sector": "Insurance",
   "value_usd": 135905924,
   "shares": 271600,
   "portfolio_pct": 9.41,
   "previous_pct": 9.33,
   "change": "REDUCE",
   "share_change_pct": -2.6,
   "quarters_held": 53
  },
  {
   "company": "Alphabet",
   "ticker": "GOOG",
   "moatshark_slug": "goog",
   "sector": "Communication and media",
   "value_usd": 94727773,
   "shares": 268100,
   "portfolio_pct": 6.56,
   "previous_pct": 6.54,
   "change": "REDUCE",
   "share_change_pct": -17.9,
   "quarters_held": 43
  },
  {
   "company": "Danaher",
   "ticker": "DHR",
   "moatshark_slug": "dhr",
   "sector": "Industrials",
   "value_usd": 93239960,
   "shares": 489500,
   "portfolio_pct": 6.46,
   "previous_pct": 6.32,
   "change": "ADD",
   "share_change_pct": 2.5,
   "quarters_held": 36
  },
  {
   "company": "Visa",
   "ticker": "V",
   "moatshark_slug": "v",
   "sector": "Financials",
   "value_usd": 91032070,
   "shares": 265330,
   "portfolio_pct": 6.3,
   "previous_pct": 5.6,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 40
  },
  {
   "company": "Mastercard",
   "ticker": "MA",
   "moatshark_slug": "ma",
   "sector": "Financials",
   "value_usd": 74651760,
   "shares": 145350,
   "portfolio_pct": 5.17,
   "previous_pct": 5.13,
   "change": "REDUCE",
   "share_change_pct": -1.1,
   "quarters_held": 47
  },
  {
   "company": "Aon",
   "ticker": "AON",
   "moatshark_slug": "aon",
   "sector": "Insurance",
   "value_usd": 70935223,
   "shares": 213860,
   "portfolio_pct": 4.91,
   "previous_pct": 4.82,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 25
  },
  {
   "company": "Vulcan Materials Ord",
   "ticker": "VMC",
   "moatshark_slug": "vmc",
   "sector": "Materials",
   "value_usd": 60123038,
   "shares": 203800,
   "portfolio_pct": 4.16,
   "previous_pct": 4.07,
   "change": "REDUCE",
   "share_change_pct": -4.9,
   "quarters_held": 35
  },
  {
   "company": "Meta Platforms",
   "ticker": "META",
   "moatshark_slug": "meta",
   "sector": "Communication and media",
   "value_usd": 57996338,
   "shares": 102960,
   "portfolio_pct": 4.02,
   "previous_pct": 4.22,
   "change": "REDUCE",
   "share_change_pct": -2.6,
   "quarters_held": 34
  },
  {
   "company": "Thermo Fisher Scientific",
   "ticker": "TMO",
   "moatshark_slug": "tmo",
   "sector": "Technology",
   "value_usd": 57756672,
   "shares": 115200,
   "portfolio_pct": 4,
   "previous_pct": 4.15,
   "change": "REDUCE",
   "share_change_pct": -4.8,
   "quarters_held": 39
  },
  {
   "company": "IDEX",
   "ticker": "IEX",
   "moatshark_slug": "iex",
   "sector": "Industrials",
   "value_usd": 57282180,
   "shares": 252400,
   "portfolio_pct": 3.97,
   "previous_pct": 3.5,
   "change": "REDUCE",
   "share_change_pct": -4.5,
   "quarters_held": 26
  },
  {
   "company": "Microsoft",
   "ticker": "MSFT",
   "moatshark_slug": "msft",
   "sector": "Technology",
   "value_usd": 57146664,
   "shares": 153200,
   "portfolio_pct": 3.96,
   "previous_pct": 4.38,
   "change": "REDUCE",
   "share_change_pct": -9.6,
   "quarters_held": 33
  },
  {
   "company": "HEICO Ord",
   "ticker": "HEI.A",
   "moatshark_slug": "hei-a",
   "sector": "Industrials",
   "value_usd": 52737179,
   "shares": 204479,
   "portfolio_pct": 3.65,
   "previous_pct": 2.78,
   "change": "ADD",
   "share_change_pct": 8.2,
   "quarters_held": 26
  },
  {
   "company": "Amazon.com",
   "ticker": "AMZN",
   "moatshark_slug": "amzn",
   "sector": "Consumer discretionary",
   "value_usd": 51838950,
   "shares": 217500,
   "portfolio_pct": 3.59,
   "previous_pct": 3.23,
   "change": "REDUCE",
   "share_change_pct": -2.2,
   "quarters_held": 43
  },
  {
   "company": "Bio-Techne",
   "ticker": "TECH",
   "moatshark_slug": "tech",
   "sector": "Health care",
   "value_usd": 38377080,
   "shares": 543200,
   "portfolio_pct": 2.66,
   "previous_pct": 2.38,
   "change": "REDUCE",
   "share_change_pct": -16.8,
   "quarters_held": 9
  },
  {
   "company": "Siriusxm Holdings",
   "ticker": "SIRI",
   "moatshark_slug": "siri",
   "sector": "Communication and media",
   "value_usd": 35093520,
   "shares": 1188000,
   "portfolio_pct": 2.43,
   "previous_pct": 2.08,
   "change": "REDUCE",
   "share_change_pct": -8.1,
   "quarters_held": 8
  },
  {
   "company": "Analog Devices",
   "ticker": "ADI",
   "moatshark_slug": "adi",
   "sector": "Technology",
   "value_usd": 33848813,
   "shares": 85225,
   "portfolio_pct": 2.34,
   "previous_pct": 2.36,
   "change": "REDUCE",
   "share_change_pct": -19.9,
   "quarters_held": 31
  },
  {
   "company": "Equifax",
   "ticker": "EFX",
   "moatshark_slug": "efx",
   "sector": "Industrials",
   "value_usd": 30471066,
   "shares": 191980,
   "portfolio_pct": 2.11,
   "previous_pct": 2.36,
   "change": "ADD",
   "share_change_pct": 2.3,
   "quarters_held": 12
  },
  {
   "company": "Labcorp Holdings Ord",
   "ticker": "LH",
   "moatshark_slug": "lh",
   "sector": "Health care",
   "value_usd": 27734000,
   "shares": 99050,
   "portfolio_pct": 1.92,
   "previous_pct": 1.84,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 9
  },
  {
   "company": "Martin Marietta Materials Ord",
   "ticker": "MLM",
   "moatshark_slug": "mlm",
   "sector": "Materials",
   "value_usd": 27318279,
   "shares": 47370,
   "portfolio_pct": 1.89,
   "previous_pct": 1.63,
   "change": "ADD",
   "share_change_pct": 19.1,
   "quarters_held": 36
  },
  {
   "company": "Global Payments Ord",
   "ticker": "GPN",
   "moatshark_slug": "gpn",
   "sector": "Financials",
   "value_usd": 25396000,
   "shares": 350000,
   "portfolio_pct": 1.76,
   "previous_pct": 1.57,
   "change": "ADD",
   "share_change_pct": 4.5,
   "quarters_held": 11
  },
  {
   "company": "Liberty Broadband",
   "ticker": "8L8C",
   "moatshark_slug": "8l8c",
   "sector": null,
   "value_usd": 23276160,
   "shares": 699750,
   "portfolio_pct": 1.61,
   "previous_pct": 2.48,
   "change": "REDUCE",
   "share_change_pct": -0.9,
   "quarters_held": 47
  },
  {
   "company": "Texas Instruments",
   "ticker": "TXN",
   "moatshark_slug": "txn",
   "sector": "Technology",
   "value_usd": 23219653,
   "shares": 77900,
   "portfolio_pct": 1.61,
   "previous_pct": 2.17,
   "change": "REDUCE",
   "share_change_pct": -51.3,
   "quarters_held": 53
  },
  {
   "company": "IDEXX Laboratories",
   "ticker": "IDXX",
   "moatshark_slug": "idxx",
   "sector": "Health care",
   "value_usd": 18583332,
   "shares": 35300,
   "portfolio_pct": 1.29,
   "previous_pct": 1.38,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 6
  },
  {
   "company": "Aci Worldwide Ord",
   "ticker": "ACIW",
   "moatshark_slug": "aciw",
   "sector": "Technology",
   "value_usd": 18491633,
   "shares": 367700,
   "portfolio_pct": 1.28,
   "previous_pct": 1.05,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "company": "Perimeter Solutions Ord",
   "ticker": "PRM",
   "moatshark_slug": "prm",
   "sector": "Materials",
   "value_usd": 16071626,
   "shares": 450817,
   "portfolio_pct": 1.11,
   "previous_pct": 0.87,
   "change": "REDUCE",
   "share_change_pct": -11.5,
   "quarters_held": 7
  },
  {
   "company": "MercadoLibre",
   "ticker": "MELI",
   "moatshark_slug": "meli",
   "sector": "Consumer discretionary",
   "value_usd": 15615988,
   "shares": 9200,
   "portfolio_pct": 1.08,
   "previous_pct": 0.97,
   "change": "ADD",
   "share_change_pct": 15,
   "quarters_held": 4
  },
  {
   "company": "Accenture",
   "ticker": "ACN",
   "moatshark_slug": "acn",
   "sector": "Technology",
   "value_usd": 14895468,
   "shares": 119700,
   "portfolio_pct": 1.03,
   "previous_pct": 2.36,
   "change": "REDUCE",
   "share_change_pct": -29.9,
   "quarters_held": 53
  },
  {
   "company": "Ingersoll Rand Ord",
   "ticker": "IR",
   "moatshark_slug": "ir",
   "sector": "Industrials",
   "value_usd": 13255323,
   "shares": 161670,
   "portfolio_pct": 0.92,
   "previous_pct": 0.74,
   "change": "ADD",
   "share_change_pct": 21.4,
   "quarters_held": 2
  },
  {
   "company": "CoStar Group",
   "ticker": "CSGP",
   "moatshark_slug": "csgp",
   "sector": "Real estate",
   "value_usd": 11984486,
   "shares": 423181,
   "portfolio_pct": 0.83,
   "previous_pct": 1.46,
   "change": "REDUCE",
   "share_change_pct": -18.2,
   "quarters_held": 26
  },
  {
   "company": "Euronet Worldwide Ord",
   "ticker": "EEFT",
   "moatshark_slug": "eeft",
   "sector": "Financials",
   "value_usd": 11710400,
   "shares": 160000,
   "portfolio_pct": 0.81,
   "previous_pct": 0.74,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 3
  },
  {
   "company": "ASML Holding",
   "ticker": "ASML",
   "moatshark_slug": "asml",
   "sector": "Industrials",
   "value_usd": 10941920,
   "shares": 5500,
   "portfolio_pct": 0.76,
   "previous_pct": 0.51,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "LKQ Ord",
   "ticker": "LKQ",
   "moatshark_slug": "lkq",
   "sector": "Industrials",
   "value_usd": 10742640,
   "shares": 408000,
   "portfolio_pct": 0.74,
   "previous_pct": 0.84,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 28
  },
  {
   "company": "Netflix",
   "ticker": "NFLX",
   "moatshark_slug": "nflx",
   "sector": "Communication and media",
   "value_usd": 10510080,
   "shares": 147200,
   "portfolio_pct": 0.73,
   "previous_pct": null,
   "change": "NEW",
   "share_change_pct": null,
   "quarters_held": 1
  },
  {
   "company": "Taiwan Semiconductor Manufacturing",
   "ticker": "TSM",
   "moatshark_slug": "tsm",
   "sector": "Technology",
   "value_usd": 9551400,
   "shares": 20000,
   "portfolio_pct": 0.66,
   "previous_pct": 0.47,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "Oracle",
   "ticker": "ORCL",
   "moatshark_slug": "orcl",
   "sector": "Technology",
   "value_usd": 8060250,
   "shares": 55000,
   "portfolio_pct": 0.56,
   "previous_pct": 0.56,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 53
  },
  {
   "company": "Capital One Financial",
   "ticker": "COF",
   "moatshark_slug": "cof",
   "sector": "Financials",
   "value_usd": 8024800,
   "shares": 40000,
   "portfolio_pct": 0.56,
   "previous_pct": null,
   "change": "NEW",
   "share_change_pct": null,
   "quarters_held": 1
  },
  {
   "company": "Salesforce",
   "ticker": "CRM",
   "moatshark_slug": "crm",
   "sector": "Technology",
   "value_usd": 7723338,
   "shares": 49300,
   "portfolio_pct": 0.53,
   "previous_pct": 1.06,
   "change": "REDUCE",
   "share_change_pct": -39.5,
   "quarters_held": 28
  },
  {
   "company": "NVIDIA",
   "ticker": "NVDA",
   "moatshark_slug": "nvda",
   "sector": "Technology",
   "value_usd": 7003150,
   "shares": 35000,
   "portfolio_pct": 0.48,
   "previous_pct": 0.43,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "Veralto",
   "ticker": "VLTO",
   "moatshark_slug": "vlto",
   "sector": "Technology",
   "value_usd": 6872700,
   "shares": 77500,
   "portfolio_pct": 0.48,
   "previous_pct": 0.25,
   "change": "ADD",
   "share_change_pct": 93.8,
   "quarters_held": 11
  },
  {
   "company": "Repligen Ord",
   "ticker": "RGEN",
   "moatshark_slug": "rgen",
   "sector": "Health care",
   "value_usd": 5566752,
   "shares": 40800,
   "portfolio_pct": 0.39,
   "previous_pct": 0.21,
   "change": "ADD",
   "share_change_pct": 60,
   "quarters_held": 2
  },
  {
   "company": "Linde",
   "ticker": "LIN",
   "moatshark_slug": "lin",
   "sector": "Materials",
   "value_usd": 3684474,
   "shares": 7100,
   "portfolio_pct": 0.26,
   "previous_pct": 0.25,
   "change": "REDUCE",
   "share_change_pct": -1.4,
   "quarters_held": 14
  },
  {
   "company": "Mettler-Toledo International",
   "ticker": "MTD",
   "moatshark_slug": "mtd",
   "sector": "Technology",
   "value_usd": 3257651,
   "shares": 2550,
   "portfolio_pct": 0.23,
   "previous_pct": null,
   "change": "NEW",
   "share_change_pct": null,
   "quarters_held": 1
  },
  {
   "company": "Pool Ord",
   "ticker": "POOL",
   "moatshark_slug": "pool",
   "sector": "Industrials",
   "value_usd": 3223500,
   "shares": 15000,
   "portfolio_pct": 0.22,
   "previous_pct": 0.21,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "S&P Global",
   "ticker": "SPGI",
   "moatshark_slug": "spgi",
   "sector": "Financials",
   "value_usd": 2911909,
   "shares": 7150,
   "portfolio_pct": 0.2,
   "previous_pct": 0.21,
   "change": "ADD",
   "share_change_pct": 1.4,
   "quarters_held": 26
  },
  {
   "company": "Amphenol Ord",
   "ticker": "APH",
   "moatshark_slug": "aph",
   "sector": "Technology",
   "value_usd": 1622144,
   "shares": 9200,
   "portfolio_pct": 0.11,
   "previous_pct": 0.08,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "Fortive",
   "ticker": "FTV",
   "moatshark_slug": "ftv",
   "sector": "Industrials",
   "value_usd": 1328708,
   "shares": 21750,
   "portfolio_pct": 0.09,
   "previous_pct": 0.09,
   "change": "REDUCE",
   "share_change_pct": -3.3,
   "quarters_held": 26
  },
  {
   "company": "Ferguson Enterprises",
   "ticker": "FERG",
   "moatshark_slug": "ferg",
   "sector": "Industrials",
   "value_usd": 1234116,
   "shares": 5200,
   "portfolio_pct": 0.09,
   "previous_pct": 0.08,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 2
  },
  {
   "company": "Comcast",
   "ticker": "CMCSA",
   "moatshark_slug": "cmcsa",
   "sector": "Communication and media",
   "value_usd": 1153850,
   "shares": 47000,
   "portfolio_pct": 0.08,
   "previous_pct": 0.09,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 43
  },
  {
   "company": "Charter Communications",
   "ticker": "CHTR",
   "moatshark_slug": "chtr",
   "sector": "Communication and media",
   "value_usd": 92437,
   "shares": 650,
   "portfolio_pct": 0.01,
   "previous_pct": 0.01,
   "change": "HOLD",
   "share_change_pct": 0,
   "quarters_held": 15
  },
  {
   "company": "Old Dominion Freight Line",
   "ticker": "ODFL",
   "moatshark_slug": "odfl",
   "sector": "Industrials",
   "value_usd": 0,
   "shares": 0,
   "portfolio_pct": 0,
   "previous_pct": 1.8,
   "change": "EXIT",
   "share_change_pct": null,
   "quarters_held": 8
  },
  {
   "company": "CDW",
   "ticker": "CDW",
   "moatshark_slug": "cdw",
   "sector": "Consumer discretionary",
   "value_usd": 0,
   "shares": 0,
   "portfolio_pct": 0,
   "previous_pct": 0.31,
   "change": "EXIT",
   "share_change_pct": null,
   "quarters_held": 3
  }
 ]
}