{
  "page": "compare",
  "query": {
    "a": "VMCIX",
    "b": "IMCB"
  },
  "retrieved_at": "2026-07-07T15:55:30+00:00",
  "disclaimer": "Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them.",
  "attribution": "Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC.",
  "terms": {
    "notice": "Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed.",
    "url": "https://fundwatcher.app/terms/"
  },
  "fund_a": {
    "name": "VANGUARD MID-CAP INDEX FUND",
    "ticker": "VMCIX",
    "slug": "VMCIX",
    "series_id": "S000002844",
    "html_url": "https://fundwatcher.app/funds/VMCIX/"
  },
  "fund_b": {
    "name": "iShares Morningstar Mid-Cap ETF",
    "ticker": "IMCB",
    "slug": "IMCB",
    "series_id": "S000004371",
    "html_url": "https://fundwatcher.app/funds/IMCB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.6504046095668772686446681221",
    "coverage_b_by_a": "0.6504046095668772686446681223",
    "shared_count": 265,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "VERTIV HOLDINGS CO",
        "value": "2034132514.26",
        "weight": "0.01025271",
        "shared": true
      },
      {
        "name": "HOWMET AEROSPACE INC",
        "value": "1995498751.44",
        "weight": "0.01005798",
        "shared": true
      },
      {
        "name": "WESTERN DIGITAL CORP",
        "value": "1980513444.03",
        "weight": "0.00998245",
        "shared": true
      },
      {
        "name": "CONSTELLATION ENERGY CORP",
        "value": "1857494206.25",
        "weight": "0.00936239",
        "shared": false
      },
      {
        "name": "SEAGATE TECHNOLO",
        "value": "1845017225.60",
        "weight": "0.00929950",
        "shared": false
      },
      {
        "name": "QUANTA SVCS INC",
        "value": "1774009345.58",
        "weight": "0.00894160",
        "shared": true
      },
      {
        "name": "SLB LTD",
        "value": "1659575195.82",
        "weight": "0.00836481",
        "shared": true
      },
      {
        "name": "CUMMINS INC",
        "value": "1605368824.92",
        "weight": "0.00809159",
        "shared": true
      },
      {
        "name": "VALERO ENERGY CORP",
        "value": "1595622379.44",
        "weight": "0.00804247",
        "shared": true
      },
      {
        "name": "PHILLIPS 66",
        "value": "1576714703.44",
        "weight": "0.00794717",
        "shared": true
      },
      {
        "name": "MARATHON PETROLEUM CORP",
        "value": "1554302395.28",
        "weight": "0.00783420",
        "shared": true
      },
      {
        "name": "MOTOROLA SOLUTIONS INC",
        "value": "1552569770.09",
        "weight": "0.00782547",
        "shared": true
      },
      {
        "name": "CRH PLC",
        "value": "1517061565.44",
        "weight": "0.00764650",
        "shared": false
      },
      {
        "name": "ROSS STORES INC",
        "value": "1513180479.96",
        "weight": "0.00762693",
        "shared": true
      },
      {
        "name": "GENERAL MOTORS CO",
        "value": "1454411424.50",
        "weight": "0.00733072",
        "shared": true
      },
      {
        "name": "ROYAL CARIBBEAN",
        "value": "1446945146.86",
        "weight": "0.00729309",
        "shared": false
      },
      {
        "name": "TRANSDIGM GROUP INC",
        "value": "1413489636.24",
        "weight": "0.00712446",
        "shared": true
      },
      {
        "name": "WARNER BROS DISCOVERY INC",
        "value": "1397116964.68",
        "weight": "0.00704194",
        "shared": true
      },
      {
        "name": "L3HARRIS TECHNOLOGIES INC",
        "value": "1392212571.75",
        "weight": "0.00701722",
        "shared": true
      },
      {
        "name": "CLOUDFLARE INC-A",
        "value": "1344422713.80",
        "weight": "0.00677634",
        "shared": true
      },
      {
        "name": "DIGITAL REALTY TRUST INC",
        "value": "1337304530.52",
        "weight": "0.00674046",
        "shared": true
      },
      {
        "name": "TE CONNECTIVITY",
        "value": "1324573535.32",
        "weight": "0.00667629",
        "shared": false
      },
      {
        "name": "PACCAR INC",
        "value": "1311770922.00",
        "weight": "0.00661176",
        "shared": true
      },
      {
        "name": "BAKER HUGHES CO",
        "value": "1302947781.30",
        "weight": "0.00656729",
        "shared": true
      },
      {
        "name": "NEWMONT CORP",
        "value": "1271616647.00",
        "weight": "0.00640937",
        "shared": true
      },
      {
        "name": "CENCORA INC",
        "value": "1253750331.84",
        "weight": "0.00631932",
        "shared": true
      },
      {
        "name": "CORTEVA INC",
        "value": "1234763350.48",
        "weight": "0.00622362",
        "shared": true
      },
      {
        "name": "REALTY INCOME CORP REIT",
        "value": "1231961531.78",
        "weight": "0.00620950",
        "shared": true
      },
      {
        "name": "ONEOK INC",
        "value": "1229443562.16",
        "weight": "0.00619681",
        "shared": true
      },
      {
        "name": "CHENIERE ENERGY INC",
        "value": "1223772603.28",
        "weight": "0.00616822",
        "shared": true
      },
      {
        "name": "ARTHUR J GALLAGHAR AND CO",
        "value": "1202549404.42",
        "weight": "0.00606125",
        "shared": true
      },
      {
        "name": "TARGET CORP",
        "value": "1185204982.80",
        "weight": "0.00597383",
        "shared": true
      },
      {
        "name": "ROBINHOOD MARKETS INC",
        "value": "1182414825.90",
        "weight": "0.00595977",
        "shared": false
      },
      {
        "name": "DOMINION ENERGY INC",
        "value": "1173251797.30",
        "weight": "0.00591358",
        "shared": true
      },
      {
        "name": "TARGA RESOURCES CORP",
        "value": "1163967890.68",
        "weight": "0.00586679",
        "shared": true
      },
      {
        "name": "ALLSTATE CORPORATION",
        "value": "1162142566.06",
        "weight": "0.00585759",
        "shared": true
      },
      {
        "name": "FASTENAL CO",
        "value": "1150687473.60",
        "weight": "0.00579985",
        "shared": true
      },
      {
        "name": "CORNING INC",
        "value": "1133693521.37",
        "weight": "0.00571419",
        "shared": true
      },
      {
        "name": "DOORDASH INC-A",
        "value": "1129982503.65",
        "weight": "0.00569549",
        "shared": false
      },
      {
        "name": "ELECTRONIC ARTS INC",
        "value": "1101789931.25",
        "weight": "0.00555339",
        "shared": true
      },
      {
        "name": "VISTRA CORP",
        "value": "1100044735.89",
        "weight": "0.00554459",
        "shared": true
      },
      {
        "name": "ENTERGY CORP",
        "value": "1099197767.56",
        "weight": "0.00554032",
        "shared": true
      },
      {
        "name": "MONOLITHIC POWER SYS INC",
        "value": "1092617455.50",
        "weight": "0.00550716",
        "shared": true
      },
      {
        "name": "CARDINAL HEALTH INC",
        "value": "1073857134.24",
        "weight": "0.00541260",
        "shared": true
      },
      {
        "name": "XCEL ENERGY INC",
        "value": "1070317601.52",
        "weight": "0.00539476",
        "shared": true
      },
      {
        "name": "EXELON CORP",
        "value": "1068746981.28",
        "weight": "0.00538684",
        "shared": true
      },
      {
        "name": "WW GRAINGER INC",
        "value": "1060170237.91",
        "weight": "0.00534361",
        "shared": true
      },
      {
        "name": "AMETEK INC NEW",
        "value": "1060006984.60",
        "weight": "0.00534279",
        "shared": true
      },
      {
        "name": "KEYSIGHT TECHNOLOGIES INC",
        "value": "1047655950.88",
        "weight": "0.00528054",
        "shared": true
      },
      {
        "name": "OCCIDENTAL PETROLEUM CORP",
        "value": "1038396190.00",
        "weight": "0.00523386",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "BlackRock Cash Funds: Institutional, SL Agency Shares",
        "value": "21745205.57",
        "weight": "0.01475413",
        "shared": false
      },
      {
        "name": "NEWMONT CORP",
        "value": "13293476.70",
        "weight": "0.00901963",
        "shared": true
      },
      {
        "name": "PNC FINANCIAL SERVICES GRP INC",
        "value": "9459881.20",
        "weight": "0.00641853",
        "shared": false
      },
      {
        "name": "US BANCORP DEL",
        "value": "9395114.51",
        "weight": "0.00637459",
        "shared": false
      },
      {
        "name": "FREEPORT MCMORAN INC",
        "value": "9319267.44",
        "weight": "0.00632313",
        "shared": false
      },
      {
        "name": "WESTERN DIGITAL CORP",
        "value": "9282031.62",
        "weight": "0.00629786",
        "shared": true
      },
      {
        "name": "SEAGATE TECHNOLOGY HOLDINGS PLC",
        "value": "8949610.88",
        "weight": "0.00607231",
        "shared": false
      },
      {
        "name": "EMERSON ELECTRIC CO",
        "value": "8919884.16",
        "weight": "0.00605215",
        "shared": false
      },
      {
        "name": "CRH PLC",
        "value": "8874112.95",
        "weight": "0.00602109",
        "shared": false
      },
      {
        "name": "ROYAL CARIBBEAN CRUISES LTD",
        "value": "8830480.00",
        "weight": "0.00599148",
        "shared": false
      },
      {
        "name": "WILLIAMS COS INC",
        "value": "8806957.14",
        "weight": "0.00597552",
        "shared": true
      },
      {
        "name": "HOWMET AEROSPACE INC",
        "value": "8708564.16",
        "weight": "0.00590876",
        "shared": true
      },
      {
        "name": "BANK OF NEW YORK MELLON CORP",
        "value": "8669136.72",
        "weight": "0.00588201",
        "shared": false
      },
      {
        "name": "CUMMINS INC",
        "value": "8568851.28",
        "weight": "0.00581397",
        "shared": true
      },
      {
        "name": "UNITED PARCEL SERVICE INC CL B",
        "value": "8457236.40",
        "weight": "0.00573824",
        "shared": false
      },
      {
        "name": "GENERAL MOTORS CO",
        "value": "8434440.00",
        "weight": "0.00572277",
        "shared": true
      },
      {
        "name": "CORNING INC",
        "value": "8377601.75",
        "weight": "0.00568421",
        "shared": true
      },
      {
        "name": "ELEVANCE HEALTH INC",
        "value": "8260420.08",
        "weight": "0.00560470",
        "shared": false
      },
      {
        "name": "TRANSDIGM GROUP INC",
        "value": "8218347.78",
        "weight": "0.00557615",
        "shared": true
      },
      {
        "name": "MONDELEZ INTL INC",
        "value": "8168843.70",
        "weight": "0.00554256",
        "shared": false
      },
      {
        "name": "ILLINOIS TOOL WORKS INC",
        "value": "8142167.90",
        "weight": "0.00552446",
        "shared": false
      },
      {
        "name": "AON PLC",
        "value": "8119340.08",
        "weight": "0.00550898",
        "shared": false
      },
      {
        "name": "REGENERON PHARMACEUTICALS INC",
        "value": "8052888.45",
        "weight": "0.00546389",
        "shared": false
      },
      {
        "name": "COLGATE-PALMOLIVE CO",
        "value": "7883581.06",
        "weight": "0.00534901",
        "shared": false
      },
      {
        "name": "JOHNSON CONTROLS INTERNATIONAL PLC",
        "value": "7850885.80",
        "weight": "0.00532683",
        "shared": false
      },
      {
        "name": "SLB LTD",
        "value": "7735333.06",
        "weight": "0.00524843",
        "shared": true
      },
      {
        "name": "ECOLAB INC",
        "value": "7718912.27",
        "weight": "0.00523729",
        "shared": false
      },
      {
        "name": "FEDEX CORP",
        "value": "7655693.25",
        "weight": "0.00519439",
        "shared": true
      },
      {
        "name": "THE CIGNA GROUP",
        "value": "7617242.79",
        "weight": "0.00516830",
        "shared": false
      },
      {
        "name": "CSX CORP",
        "value": "7583038.72",
        "weight": "0.00514510",
        "shared": false
      },
      {
        "name": "QUANTA SVCS INC",
        "value": "7543769.22",
        "weight": "0.00511845",
        "shared": true
      },
      {
        "name": "VERTIV HOLDINGS CO",
        "value": "7510501.20",
        "weight": "0.00509588",
        "shared": true
      },
      {
        "name": "NIKE INC CL B",
        "value": "7507689.84",
        "weight": "0.00509397",
        "shared": false
      },
      {
        "name": "MARRIOTT INTL-A",
        "value": "7505085.90",
        "weight": "0.00509220",
        "shared": false
      },
      {
        "name": "MARVELL TECHNOLOGY INC",
        "value": "7309333.64",
        "weight": "0.00495939",
        "shared": true
      },
      {
        "name": "MOTOROLA SOLUTIONS INC",
        "value": "7254978.42",
        "weight": "0.00492251",
        "shared": true
      },
      {
        "name": "SANDISK CORPORATION",
        "value": "7208887.50",
        "weight": "0.00489123",
        "shared": false
      },
      {
        "name": "CINTAS CORP",
        "value": "7139038.39",
        "weight": "0.00484384",
        "shared": true
      },
      {
        "name": "TRUIST FINL CORP",
        "value": "7135501.98",
        "weight": "0.00484144",
        "shared": false
      },
      {
        "name": "TE CONNECTIVITY PLC",
        "value": "7108687.02",
        "weight": "0.00482325",
        "shared": false
      },
      {
        "name": "NORFOLK SOUTHERN CORP",
        "value": "7091111.52",
        "weight": "0.00481132",
        "shared": false
      },
      {
        "name": "CENCORA INC",
        "value": "7089925.14",
        "weight": "0.00481052",
        "shared": true
      },
      {
        "name": "HILTON WORLDWIDE HOLDINGS INC",
        "value": "7012298.41",
        "weight": "0.00475785",
        "shared": true
      },
      {
        "name": "TRAVELERS COS IN",
        "value": "6892539.26",
        "weight": "0.00467659",
        "shared": false
      },
      {
        "name": "L3HARRIS TECHNOLOGIES INC",
        "value": "6889913.60",
        "weight": "0.00467481",
        "shared": true
      },
      {
        "name": "ARTHUR J GALLAGHAR AND CO",
        "value": "6837476.03",
        "weight": "0.00463923",
        "shared": true
      },
      {
        "name": "PACCAR INC",
        "value": "6813761.67",
        "weight": "0.00462314",
        "shared": true
      },
      {
        "name": "WARNER BROS DISCOVERY INC",
        "value": "6720118.02",
        "weight": "0.00455960",
        "shared": true
      },
      {
        "name": "SIMON PROPERTY",
        "value": "6695084.76",
        "weight": "0.00454262",
        "shared": true
      },
      {
        "name": "AUTOZONE INC",
        "value": "6664017.71",
        "weight": "0.00452154",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000036405-26-000314",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/36405/000003640526000314/0000036405-26-000314-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-007330",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126007330/0002071691-26-007330-index.htm"
    }
  ]
}