{
  "page": "compare",
  "query": {
    "a": "VRTIX",
    "b": "FSSNX"
  },
  "retrieved_at": "2026-07-07T16:20:55+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 RUSSELL 2000 INDEX FUND",
    "ticker": "VRTIX",
    "slug": "VRTIX",
    "series_id": "S000030003",
    "html_url": "https://fundwatcher.app/funds/VRTIX/"
  },
  "fund_b": {
    "name": "Fidelity Small Cap Index Fund",
    "ticker": "FSSNX",
    "slug": "FSSNX",
    "series_id": "S000033638",
    "html_url": "https://fundwatcher.app/funds/FSSNX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.8284074079214546063906686583",
    "coverage_b_by_a": "0.8284074079214546063906686581",
    "shared_count": 1841,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "Vanguard Market Liquidity Fund",
        "value": "276712407.99",
        "weight": "0.01796230",
        "shared": false
      },
      {
        "name": "BLOOM ENERGY CORP CL A",
        "value": "168709386.21",
        "weight": "0.01095148",
        "shared": true
      },
      {
        "name": "FABRINET",
        "value": "97712511.66",
        "weight": "0.00634284",
        "shared": false
      },
      {
        "name": "COEUR MINING INC",
        "value": "86177140.80",
        "weight": "0.00559404",
        "shared": true
      },
      {
        "name": "CREDO TECHNOLOGY",
        "value": "85378079.17",
        "weight": "0.00554217",
        "shared": false
      },
      {
        "name": "HECLA MINING CO",
        "value": "78495769.25",
        "weight": "0.00509542",
        "shared": true
      },
      {
        "name": "ECHOSTAR CORP CL A",
        "value": "77657417.52",
        "weight": "0.00504100",
        "shared": true
      },
      {
        "name": "NEXTRACKER INC CL A",
        "value": "76017989.20",
        "weight": "0.00493458",
        "shared": true
      },
      {
        "name": "KRATOS DEFENSE and SEC SOLTN INC",
        "value": "71228717.98",
        "weight": "0.00462369",
        "shared": true
      },
      {
        "name": "IONQ INC",
        "value": "64360495.05",
        "weight": "0.00417785",
        "shared": true
      },
      {
        "name": "STERLING INFRASTRUCTURE INC",
        "value": "63315717.57",
        "weight": "0.00411003",
        "shared": true
      },
      {
        "name": "ADV ENERGY INDS",
        "value": "62712328.31",
        "weight": "0.00407086",
        "shared": true
      },
      {
        "name": "ENSIGN GROUP INC",
        "value": "59632852.29",
        "weight": "0.00387096",
        "shared": true
      },
      {
        "name": "MODINE MFG CO",
        "value": "59036368.50",
        "weight": "0.00383224",
        "shared": true
      },
      {
        "name": "DYCOM INDUSTRIES INC",
        "value": "58362199.02",
        "weight": "0.00378848",
        "shared": true
      },
      {
        "name": "GUARDANT HEALTH INC",
        "value": "56533903.50",
        "weight": "0.00366980",
        "shared": true
      },
      {
        "name": "SPX TECHNOLOGIES INC",
        "value": "54249780.06",
        "weight": "0.00352153",
        "shared": true
      },
      {
        "name": "RAMBUS INC",
        "value": "53306938.08",
        "weight": "0.00346033",
        "shared": true
      },
      {
        "name": "TTM TECHNOLOGIES INC",
        "value": "52894920.16",
        "weight": "0.00343358",
        "shared": true
      },
      {
        "name": "BRIDGEBIO PHARMA INC",
        "value": "52271163.12",
        "weight": "0.00339309",
        "shared": true
      },
      {
        "name": "AEROVIRONMENT INC",
        "value": "47294100.25",
        "weight": "0.00307001",
        "shared": true
      },
      {
        "name": "INTERDIGITAL INC",
        "value": "47065017.71",
        "weight": "0.00305514",
        "shared": true
      },
      {
        "name": "MOOG INC-CLASS A",
        "value": "47055288.36",
        "weight": "0.00305451",
        "shared": true
      },
      {
        "name": "CHART INDUSTRIES INC",
        "value": "46480391.40",
        "weight": "0.00301719",
        "shared": true
      },
      {
        "name": "CARETRUST REIT INC",
        "value": "45264125.22",
        "weight": "0.00293824",
        "shared": true
      },
      {
        "name": "WATTS WATER TECH INC CL A",
        "value": "44758608.48",
        "weight": "0.00290543",
        "shared": true
      },
      {
        "name": "AMERICAN HEALTHCARE REIT INC",
        "value": "43792112.88",
        "weight": "0.00284269",
        "shared": true
      },
      {
        "name": "SITIME CORP",
        "value": "42495175.52",
        "weight": "0.00275850",
        "shared": true
      },
      {
        "name": "FLUOR CORP",
        "value": "41757817.56",
        "weight": "0.00271064",
        "shared": true
      },
      {
        "name": "UMB FINANCIAL CORP",
        "value": "41743568.28",
        "weight": "0.00270971",
        "shared": true
      },
      {
        "name": "ARROWHEAD PHARMACEUTICALS INC",
        "value": "41596608.42",
        "weight": "0.00270017",
        "shared": true
      },
      {
        "name": "PRAXIS PRECISION MEDICINES INC",
        "value": "41010088.50",
        "weight": "0.00266210",
        "shared": true
      },
      {
        "name": "COMMERCIAL METALS CO",
        "value": "40459474.30",
        "weight": "0.00262636",
        "shared": true
      },
      {
        "name": "PRIMORIS SVCS CORP",
        "value": "40428680.64",
        "weight": "0.00262436",
        "shared": true
      },
      {
        "name": "SANMINA CORP",
        "value": "40219637.22",
        "weight": "0.00261079",
        "shared": true
      },
      {
        "name": "OLD NATL BANCORP",
        "value": "40106127.60",
        "weight": "0.00260342",
        "shared": true
      },
      {
        "name": "JOHN BEAN TECHNOLOGIES CORP",
        "value": "39878300.00",
        "weight": "0.00258863",
        "shared": true
      },
      {
        "name": "MADRIGAL PHARMACEUTICALS INC",
        "value": "39811392.00",
        "weight": "0.00258429",
        "shared": true
      },
      {
        "name": "SEMTECH CORP",
        "value": "38987129.48",
        "weight": "0.00253078",
        "shared": true
      },
      {
        "name": "TEREX CORP",
        "value": "38215459.02",
        "weight": "0.00248069",
        "shared": true
      },
      {
        "name": "FORMFACTOR INC",
        "value": "38178556.80",
        "weight": "0.00247829",
        "shared": true
      },
      {
        "name": "VAXCYTE INC",
        "value": "38005353.54",
        "weight": "0.00246705",
        "shared": true
      },
      {
        "name": "ZURN ELKAY WATER SOLUTIONS CORP",
        "value": "37986778.38",
        "weight": "0.00246585",
        "shared": true
      },
      {
        "name": "FIRSTCASH HOLDINGS INC",
        "value": "37861064.15",
        "weight": "0.00245769",
        "shared": true
      },
      {
        "name": "INSTALLED BUILDING PRODUCTS INC",
        "value": "37683550.48",
        "weight": "0.00244616",
        "shared": true
      },
      {
        "name": "JACKSON FINANCIAL INC",
        "value": "37587549.44",
        "weight": "0.00243993",
        "shared": true
      },
      {
        "name": "URANIUM ENERGY CORP",
        "value": "36267668.01",
        "weight": "0.00235425",
        "shared": true
      },
      {
        "name": "CYTOKINETICS INC",
        "value": "36009513.90",
        "weight": "0.00233749",
        "shared": true
      },
      {
        "name": "ESCO TECHNOLOGIES INC",
        "value": "35732143.98",
        "weight": "0.00231949",
        "shared": true
      },
      {
        "name": "FED SIGNAL CORP",
        "value": "34668429.66",
        "weight": "0.00225044",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "Fidelity Securities Lending Cash Central Fund",
        "value": "2683036022.20",
        "weight": "0.08282391",
        "shared": false
      },
      {
        "name": "BLOOM ENERGY CORP CL A",
        "value": "320563212.02",
        "weight": "0.00989562",
        "shared": true
      },
      {
        "name": "CREDO TECHNOLOGY GROUP HOLDING LTD",
        "value": "186174724.32",
        "weight": "0.00574712",
        "shared": false
      },
      {
        "name": "FABRINET",
        "value": "171303510.56",
        "weight": "0.00528805",
        "shared": false
      },
      {
        "name": "KRATOS DEFENSE and SEC SOLTN INC",
        "value": "166374232.27",
        "weight": "0.00513589",
        "shared": true
      },
      {
        "name": "NEXTRACKER INC CL A",
        "value": "165501445.95",
        "weight": "0.00510894",
        "shared": true
      },
      {
        "name": "ECHOSTAR CORP CL A",
        "value": "148702015.80",
        "weight": "0.00459035",
        "shared": true
      },
      {
        "name": "HECLA MINING CO",
        "value": "138676223.28",
        "weight": "0.00428086",
        "shared": true
      },
      {
        "name": "GUARDANT HEALTH INC",
        "value": "134151980.36",
        "weight": "0.00414120",
        "shared": true
      },
      {
        "name": "IONQ INC",
        "value": "131059557.44",
        "weight": "0.00404574",
        "shared": true
      },
      {
        "name": "COEUR MINING INC",
        "value": "126782452.16",
        "weight": "0.00391371",
        "shared": true
      },
      {
        "name": "RAMBUS INC",
        "value": "118985702.19",
        "weight": "0.00367303",
        "shared": true
      },
      {
        "name": "BRIDGEBIO PHARMA INC",
        "value": "118646925.95",
        "weight": "0.00366257",
        "shared": true
      },
      {
        "name": "Fidelity Cash Central Fund",
        "value": "103833024.52",
        "weight": "0.00320527",
        "shared": false
      },
      {
        "name": "STERLING INFRASTRUCTURE INC",
        "value": "103443148.20",
        "weight": "0.00319324",
        "shared": true
      },
      {
        "name": "AEROVIRONMENT INC",
        "value": "102003487.95",
        "weight": "0.00314879",
        "shared": true
      },
      {
        "name": "DYCOM INDUSTRIES INC",
        "value": "98919131.35",
        "weight": "0.00305358",
        "shared": true
      },
      {
        "name": "TTM TECHNOLOGIES INC",
        "value": "97375218.20",
        "weight": "0.00300592",
        "shared": true
      },
      {
        "name": "SPX TECHNOLOGIES INC",
        "value": "97337056.86",
        "weight": "0.00300474",
        "shared": true
      },
      {
        "name": "MODINE MFG CO",
        "value": "93742649.00",
        "weight": "0.00289379",
        "shared": true
      },
      {
        "name": "ENSIGN GROUP INC",
        "value": "93335146.86",
        "weight": "0.00288121",
        "shared": true
      },
      {
        "name": "ADV ENERGY INDS",
        "value": "93233978.88",
        "weight": "0.00287808",
        "shared": true
      },
      {
        "name": "CHART INDUSTRIES INC",
        "value": "90683881.12",
        "weight": "0.00279936",
        "shared": true
      },
      {
        "name": "UMB FINANCIAL CORP",
        "value": "89446549.92",
        "weight": "0.00276117",
        "shared": true
      },
      {
        "name": "ARROWHEAD PHARMACEUTICALS INC",
        "value": "89053899.69",
        "weight": "0.00274905",
        "shared": true
      },
      {
        "name": "MADRIGAL PHARMACEUTICALS INC",
        "value": "88101733.43",
        "weight": "0.00271965",
        "shared": true
      },
      {
        "name": "OKLO INC",
        "value": "83836038.24",
        "weight": "0.00258797",
        "shared": true
      },
      {
        "name": "MOOG INC-CLASS A",
        "value": "83157492.25",
        "weight": "0.00256703",
        "shared": true
      },
      {
        "name": "OLD NATL BANCORP",
        "value": "82950330.47",
        "weight": "0.00256063",
        "shared": true
      },
      {
        "name": "COMMERCIAL METALS CO",
        "value": "82868550.45",
        "weight": "0.00255811",
        "shared": true
      },
      {
        "name": "INTERDIGITAL INC",
        "value": "81930564.08",
        "weight": "0.00252915",
        "shared": true
      },
      {
        "name": "LUMEN TECHNOLOGIES INC",
        "value": "81496094.40",
        "weight": "0.00251574",
        "shared": true
      },
      {
        "name": "CARETRUST REIT INC",
        "value": "81488351.56",
        "weight": "0.00251550",
        "shared": true
      },
      {
        "name": "AVIDITY BIOSCIENCES",
        "value": "81293204.28",
        "weight": "0.00250948",
        "shared": false
      },
      {
        "name": "JACKSON FINANCIAL INC",
        "value": "79830877.08",
        "weight": "0.00246434",
        "shared": true
      },
      {
        "name": "URANIUM ENERGY CORP",
        "value": "79696037.60",
        "weight": "0.00246017",
        "shared": true
      },
      {
        "name": "WATTS WATER TECH INC CL A",
        "value": "79587426.93",
        "weight": "0.00245682",
        "shared": true
      },
      {
        "name": "JOHN BEAN TECHNOLOGIES CORP",
        "value": "79574162.33",
        "weight": "0.00245641",
        "shared": true
      },
      {
        "name": "APPLIED DIGITAL CORP",
        "value": "78009309.84",
        "weight": "0.00240811",
        "shared": true
      },
      {
        "name": "COMPASS INC - A",
        "value": "77869717.52",
        "weight": "0.00240380",
        "shared": true
      },
      {
        "name": "PRIMORIS SVCS CORP",
        "value": "77690412.50",
        "weight": "0.00239826",
        "shared": true
      },
      {
        "name": "AMERICAN HEALTHCARE REIT INC",
        "value": "76892151.22",
        "weight": "0.00237362",
        "shared": true
      },
      {
        "name": "CADENCE BANK",
        "value": "76216573.40",
        "weight": "0.00235277",
        "shared": false
      },
      {
        "name": "SITIME CORP",
        "value": "75777789.01",
        "weight": "0.00233922",
        "shared": true
      },
      {
        "name": "PRAXIS PRECISION MEDICINES INC",
        "value": "74727290.00",
        "weight": "0.00230679",
        "shared": true
      },
      {
        "name": "ORMAT TECHNOLOGIES INC",
        "value": "73823922.50",
        "weight": "0.00227891",
        "shared": true
      },
      {
        "name": "AXSOME THERAPEUTICS INC",
        "value": "73169728.50",
        "weight": "0.00225871",
        "shared": true
      },
      {
        "name": "FLUOR CORP",
        "value": "72127948.31",
        "weight": "0.00222655",
        "shared": true
      },
      {
        "name": "SANMINA CORP",
        "value": "71731308.88",
        "weight": "0.00221431",
        "shared": true
      },
      {
        "name": "CYTOKINETICS INC",
        "value": "71409692.01",
        "weight": "0.00220438",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001021882-26-000275",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1021882/000102188226000275/0001021882-26-000275-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002107",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226002107/0000035402-26-002107-index.htm"
    }
  ]
}