{
  "page": "compare",
  "query": {
    "a": "MIDKX",
    "b": "MPSIX"
  },
  "retrieved_at": "2026-07-07T18:24:19+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": "S&P MidCap Index Fund",
    "ticker": "MIDKX",
    "slug": "MIDKX",
    "series_id": "S000016023",
    "html_url": "https://fundwatcher.app/funds/MIDKX/"
  },
  "fund_b": {
    "name": "MidCap S&P 400 Index Fund",
    "ticker": "MPSIX",
    "slug": "MPSIX",
    "series_id": "S000007079",
    "html_url": "https://fundwatcher.app/funds/MPSIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.9194078645800110131661056998",
    "coverage_b_by_a": "0.9194078645800110131661057000",
    "shared_count": 394,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "LUMENTUM HOLDINGS INC",
        "value": "1631718.48",
        "weight": "0.01431058",
        "shared": true
      },
      {
        "name": "COHERENT CORP",
        "value": "1335819.87",
        "weight": "0.01171547",
        "shared": true
      },
      {
        "name": "TECHNIPFMC PLC",
        "value": "884442.78",
        "weight": "0.00775678",
        "shared": true
      },
      {
        "name": "CURTISS WRIGHT CORPORATION",
        "value": "852301.61",
        "weight": "0.00747490",
        "shared": true
      },
      {
        "name": "CASEY'S GENERAL",
        "value": "840533.34",
        "weight": "0.00737169",
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      },
      {
        "name": "XPO LOGISTICS INC",
        "value": "815360.78",
        "weight": "0.00715092",
        "shared": true
      },
      {
        "name": "WOODWARD INC",
        "value": "773520.00",
        "weight": "0.00678396",
        "shared": true
      },
      {
        "name": "FLEX LTD",
        "value": "769222.12",
        "weight": "0.00674627",
        "shared": true
      },
      {
        "name": "ATI INC",
        "value": "733537.56",
        "weight": "0.00643331",
        "shared": true
      },
      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "716041.90",
        "weight": "0.00627987",
        "shared": true
      },
      {
        "name": "US FOODS HOLDING CORP",
        "value": "710083.50",
        "weight": "0.00622761",
        "shared": true
      },
      {
        "name": "ROYAL GOLD INC",
        "value": "706305.24",
        "weight": "0.00619447",
        "shared": true
      },
      {
        "name": "TENET HEALTHCARE CORP",
        "value": "690640.15",
        "weight": "0.00605709",
        "shared": true
      },
      {
        "name": "ILLUMINA INC",
        "value": "678081.78",
        "weight": "0.00594695",
        "shared": true
      },
      {
        "name": "PURE STORAGE INC CL A",
        "value": "674759.54",
        "weight": "0.00591781",
        "shared": true
      },
      {
        "name": "CARPENTER TECHNOLOGY CORP",
        "value": "671146.02",
        "weight": "0.00588612",
        "shared": true
      },
      {
        "name": "FABRINET",
        "value": "661303.56",
        "weight": "0.00579980",
        "shared": true
      },
      {
        "name": "ENTEGRIS INC",
        "value": "659203.65",
        "weight": "0.00578138",
        "shared": true
      },
      {
        "name": "NVENT ELECTRIC",
        "value": "644588.56",
        "weight": "0.00565320",
        "shared": true
      },
      {
        "name": "BWX TECHNOLOGIES INC",
        "value": "637096.14",
        "weight": "0.00558749",
        "shared": true
      },
      {
        "name": "BURLINGTON STORES INC",
        "value": "627242.28",
        "weight": "0.00550107",
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      },
      {
        "name": "TWILIO INC CLASS A",
        "value": "619194.24",
        "weight": "0.00543049",
        "shared": true
      },
      {
        "name": "MASTEC INC",
        "value": "618093.48",
        "weight": "0.00542083",
        "shared": true
      },
      {
        "name": "RB GLOBAL INC",
        "value": "615452.16",
        "weight": "0.00539767",
        "shared": true
      },
      {
        "name": "RBC BEARINGS INC",
        "value": "603564.16",
        "weight": "0.00529341",
        "shared": true
      },
      {
        "name": "TEMPUR SEALY INTERNATIONAL INC",
        "value": "570447.23",
        "weight": "0.00500296",
        "shared": true
      },
      {
        "name": "TALEN ENERGY CORP",
        "value": "565358.28",
        "weight": "0.00495833",
        "shared": true
      },
      {
        "name": "RELIANCE STEEL and ALUMINUM CO",
        "value": "553632.56",
        "weight": "0.00485550",
        "shared": true
      },
      {
        "name": "WP CAREY INC",
        "value": "553156.50",
        "weight": "0.00485132",
        "shared": true
      },
      {
        "name": "HECLA MINING CO",
        "value": "550959.38",
        "weight": "0.00483205",
        "shared": true
      },
      {
        "name": "API GROUP CORP",
        "value": "549036.54",
        "weight": "0.00481519",
        "shared": true
      },
      {
        "name": "MKS INSTRUMENTS INC",
        "value": "547590.40",
        "weight": "0.00480250",
        "shared": true
      },
      {
        "name": "ALCOA CORP",
        "value": "543944.96",
        "weight": "0.00477053",
        "shared": true
      },
      {
        "name": "CARLISLE COS INC",
        "value": "542808.75",
        "weight": "0.00476057",
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      },
      {
        "name": "LINCOLN ELECTRIC HLDGS INC",
        "value": "535922.35",
        "weight": "0.00470017",
        "shared": true
      },
      {
        "name": "ITT INC",
        "value": "534159.99",
        "weight": "0.00468472",
        "shared": true
      },
      {
        "name": "GRACO INC",
        "value": "526609.44",
        "weight": "0.00461850",
        "shared": true
      },
      {
        "name": "MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC",
        "value": "522788.84",
        "weight": "0.00458499",
        "shared": true
      },
      {
        "name": "TRANSUNION",
        "value": "517801.60",
        "weight": "0.00454125",
        "shared": true
      },
      {
        "name": "EAST WEST BNCRP",
        "value": "510474.80",
        "weight": "0.00447699",
        "shared": true
      },
      {
        "name": "NEXTRACKER INC CL A",
        "value": "509209.50",
        "weight": "0.00446589",
        "shared": true
      },
      {
        "name": "PERFORMANCE FOOD GROUP CO",
        "value": "506847.32",
        "weight": "0.00444518",
        "shared": true
      },
      {
        "name": "ECHOSTAR CORP CL A",
        "value": "506483.52",
        "weight": "0.00444199",
        "shared": true
      },
      {
        "name": "JONES LANG LASALLE INC",
        "value": "505826.65",
        "weight": "0.00443623",
        "shared": true
      },
      {
        "name": "TOLL BROTHERS INC",
        "value": "499708.72",
        "weight": "0.00438257",
        "shared": true
      },
      {
        "name": "WIB 0 03/19/26",
        "value": "499142.74",
        "weight": "0.00437761",
        "shared": false
      },
      {
        "name": "RPM INTL INC",
        "value": "495737.28",
        "weight": "0.00434774",
        "shared": true
      },
      {
        "name": "CLEAN HARBORS INC",
        "value": "493162.40",
        "weight": "0.00432516",
        "shared": true
      },
      {
        "name": "KRATOS DEFENSE and SEC SOLTN INC",
        "value": "492260.16",
        "weight": "0.00431724",
        "shared": true
      },
      {
        "name": "REGAL REXNORD CORP",
        "value": "489249.72",
        "weight": "0.00429084",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "Principal Government Money Market Fund - Class R-6",
        "value": "14534720.64",
        "weight": "0.01148489",
        "shared": false
      },
      {
        "name": "CIENA CORP",
        "value": "13291287.23",
        "weight": "0.01050237",
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      },
      {
        "name": "COHERENT CORP",
        "value": "12477457.08",
        "weight": "0.00985931",
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      },
      {
        "name": "LUMENTUM HOLDINGS INC",
        "value": "10395123.36",
        "weight": "0.00821391",
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      },
      {
        "name": "CURTISS WRIGHT CORPORATION",
        "value": "9061008.62",
        "weight": "0.00715973",
        "shared": true
      },
      {
        "name": "FLEX LTD",
        "value": "8723096.96",
        "weight": "0.00689272",
        "shared": true
      },
      {
        "name": "CASEY'S GENERAL",
        "value": "8438234.50",
        "weight": "0.00666764",
        "shared": true
      },
      {
        "name": "TECHNIPFMC PLC",
        "value": "8434336.40",
        "weight": "0.00666456",
        "shared": true
      },
      {
        "name": "ILLUMINA INC",
        "value": "8279946.18",
        "weight": "0.00654256",
        "shared": true
      },
      {
        "name": "PURE STORAGE INC CL A",
        "value": "8124149.58",
        "weight": "0.00641945",
        "shared": true
      },
      {
        "name": "ROYAL GOLD INC",
        "value": "7983295.89",
        "weight": "0.00630816",
        "shared": true
      },
      {
        "name": "RB GLOBAL INC",
        "value": "7891525.02",
        "weight": "0.00623564",
        "shared": true
      },
      {
        "name": "UNITED THERAPEUTICS CORP DEL",
        "value": "7564422.88",
        "weight": "0.00597718",
        "shared": true
      },
      {
        "name": "WOODWARD INC",
        "value": "7132329.60",
        "weight": "0.00563575",
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      },
      {
        "name": "BWX TECHNOLOGIES INC",
        "value": "7028171.16",
        "weight": "0.00555345",
        "shared": true
      },
      {
        "name": "US FOODS HOLDING CORP",
        "value": "6975914.88",
        "weight": "0.00551215",
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      },
      {
        "name": "TEMPUR SEALY INTERNATIONAL INC",
        "value": "6900353.95",
        "weight": "0.00545245",
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      },
      {
        "name": "BURLINGTON STORES INC",
        "value": "6893833.86",
        "weight": "0.00544730",
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      },
      {
        "name": "TWILIO INC CLASS A",
        "value": "6834177.64",
        "weight": "0.00540016",
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      },
      {
        "name": "NVENT ELECTRIC",
        "value": "6778371.06",
        "weight": "0.00535606",
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      },
      {
        "name": "ENTEGRIS INC",
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        "weight": "0.00529255",
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      },
      {
        "name": "FABRINET",
        "value": "6561922.08",
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      },
      {
        "name": "KRATOS DEFENSE and SEC SOLTN INC",
        "value": "6508274.81",
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      },
      {
        "name": "XPO LOGISTICS INC",
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      },
      {
        "name": "NEXTRACKER INC CL A",
        "value": "6501656.43",
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      },
      {
        "name": "RELIANCE STEEL and ALUMINUM CO",
        "value": "6446997.00",
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      },
      {
        "name": "JONES LANG LASALLE INC",
        "value": "6321048.51",
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      },
      {
        "name": "TENET HEALTHCARE CORP",
        "value": "6224851.36",
        "weight": "0.00491869",
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      },
      {
        "name": "ATI INC",
        "value": "6116052.00",
        "weight": "0.00483272",
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      },
      {
        "name": "TALEN ENERGY CORP",
        "value": "5955910.92",
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      },
      {
        "name": "CARPENTER TECHNOLOGY CORP",
        "value": "5924986.86",
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      },
      {
        "name": "MKS INSTRUMENTS INC",
        "value": "5917030.35",
        "weight": "0.00467546",
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      },
      {
        "name": "EAST WEST BNCRP",
        "value": "5891828.96",
        "weight": "0.00465554",
        "shared": true
      },
      {
        "name": "RBC BEARINGS INC",
        "value": "5886112.60",
        "weight": "0.00465103",
        "shared": true
      },
      {
        "name": "ANNALY CAPITAL MGMT INC REIT",
        "value": "5881033.86",
        "weight": "0.00464701",
        "shared": true
      },
      {
        "name": "ITT INC",
        "value": "5796957.70",
        "weight": "0.00458058",
        "shared": true
      },
      {
        "name": "API GROUP CORP",
        "value": "5757902.27",
        "weight": "0.00454972",
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      },
      {
        "name": "TRANSUNION",
        "value": "5742304.38",
        "weight": "0.00453739",
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      },
      {
        "name": "WP CAREY INC",
        "value": "5719779.00",
        "weight": "0.00451959",
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      },
      {
        "name": "CARLYLE GROUP INC (THE)",
        "value": "5707714.34",
        "weight": "0.00451006",
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      },
      {
        "name": "ECHOSTAR CORP CL A",
        "value": "5703231.06",
        "weight": "0.00450652",
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      },
      {
        "name": "MUELLER INDUSTRIES INC",
        "value": "5655527.88",
        "weight": "0.00446883",
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      },
      {
        "name": "HECLA MINING CO",
        "value": "5646822.44",
        "weight": "0.00446195",
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      },
      {
        "name": "PERFORMANCE FOOD GROUP CO",
        "value": "5601006.00",
        "weight": "0.00442574",
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      },
      {
        "name": "MASTEC INC",
        "value": "5519737.44",
        "weight": "0.00436153",
        "shared": true
      },
      {
        "name": "ALCOA CORP",
        "value": "5505116.24",
        "weight": "0.00434997",
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      },
      {
        "name": "LINCOLN ELECTRIC HLDGS INC",
        "value": "5463821.85",
        "weight": "0.00431735",
        "shared": true
      },
      {
        "name": "GRACO INC",
        "value": "5418040.53",
        "weight": "0.00428117",
        "shared": true
      },
      {
        "name": "OKTA INC CL A",
        "value": "5325281.28",
        "weight": "0.00420787",
        "shared": true
      },
      {
        "name": "CARLISLE COS INC",
        "value": "5317202.22",
        "weight": "0.00420149",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002000324-26-001780",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/778206/000200032426001780/0002000324-26-001780-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000898745-26-000440",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/898745/000089874526000440/0000898745-26-000440-index.htm"
    }
  ]
}