{
  "page": "compare",
  "query": {
    "a": "FESIX",
    "b": "IYR"
  },
  "retrieved_at": "2026-07-07T17:39:25+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": "Fidelity SAI Real Estate Index Fund",
    "ticker": "FESIX",
    "slug": "FESIX",
    "series_id": "S000051993",
    "html_url": "https://fundwatcher.app/funds/FESIX/"
  },
  "fund_b": {
    "name": "iShares U.S. Real Estate ETF",
    "ticker": "IYR",
    "slug": "IYR",
    "series_id": "S000004328",
    "html_url": "https://fundwatcher.app/funds/IYR/"
  },
  "overlap": {
    "coverage_a_by_b": "0.8450330856797213291211618545",
    "coverage_b_by_a": "0.8450330856797213291211618544",
    "shared_count": 57,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "PROLOGIS INC REIT",
        "value": "13200399.36",
        "weight": "0.08040338",
        "shared": true
      },
      {
        "name": "WELLTOWER INC",
        "value": "12635565.52",
        "weight": "0.07696299",
        "shared": true
      },
      {
        "name": "AMERICAN TOWER CORP",
        "value": "9178060.32",
        "weight": "0.05590339",
        "shared": true
      },
      {
        "name": "EQUINIX INC",
        "value": "7350607.22",
        "weight": "0.04477241",
        "shared": true
      },
      {
        "name": "SIMON PROPERTY",
        "value": "6854254.68",
        "weight": "0.04174913",
        "shared": true
      },
      {
        "name": "DIGITAL REALTY TRUST INC",
        "value": "6038090.75",
        "weight": "0.03677789",
        "shared": true
      },
      {
        "name": "REALTY INCOME CORP REIT",
        "value": "5920226.84",
        "weight": "0.03605999",
        "shared": true
      },
      {
        "name": "CBRE GROUP INC - CL A",
        "value": "5596532.81",
        "weight": "0.03408837",
        "shared": true
      },
      {
        "name": "PUBLIC STORAGE",
        "value": "4840229.75",
        "weight": "0.02948175",
        "shared": true
      },
      {
        "name": "CROWN CASTLE INC",
        "value": "4195614.11",
        "weight": "0.02555540",
        "shared": true
      },
      {
        "name": "VENTAS INC REIT",
        "value": "3565907.37",
        "weight": "0.02171987",
        "shared": true
      },
      {
        "name": "VICI PROPERTIES",
        "value": "3298726.08",
        "weight": "0.02009248",
        "shared": true
      },
      {
        "name": "EXTRA SPACE STORAGE INC",
        "value": "3283961.94",
        "weight": "0.02000255",
        "shared": true
      },
      {
        "name": "IRON MOUNTAIN INC",
        "value": "3033748.77",
        "weight": "0.01847851",
        "shared": true
      },
      {
        "name": "COSTAR GROUP INC",
        "value": "2891853.00",
        "weight": "0.01761422",
        "shared": true
      },
      {
        "name": "AVALONBAY COMMUNITIES INC REIT",
        "value": "2832237.47",
        "weight": "0.01725110",
        "shared": true
      },
      {
        "name": "EQUITY RESIDENTIAL REIT",
        "value": "2386918.32",
        "weight": "0.01453867",
        "shared": true
      },
      {
        "name": "SBA COMMUNICATIONS CORP",
        "value": "2233438.41",
        "weight": "0.01360383",
        "shared": true
      },
      {
        "name": "WEYERHAEUSER CO",
        "value": "2117414.52",
        "weight": "0.01289713",
        "shared": true
      },
      {
        "name": "JONES LANG LASALLE INC",
        "value": "1903723.29",
        "weight": "0.01159554",
        "shared": true
      },
      {
        "name": "ESSEX PROPERTY TRUST INC",
        "value": "1813715.87",
        "weight": "0.01104731",
        "shared": true
      },
      {
        "name": "INVITATION HOMES INC",
        "value": "1786713.39",
        "weight": "0.01088284",
        "shared": true
      },
      {
        "name": "SUN COMMUNITIES INC - REIT",
        "value": "1777775.93",
        "weight": "0.01082840",
        "shared": true
      },
      {
        "name": "MID AMERICA APT CMNTY INC",
        "value": "1759195.70",
        "weight": "0.01071523",
        "shared": true
      },
      {
        "name": "WP CAREY INC",
        "value": "1709851.50",
        "weight": "0.01041467",
        "shared": true
      },
      {
        "name": "KIMCO REALTY CORPORATION",
        "value": "1598074.80",
        "weight": "0.00973384",
        "shared": true
      },
      {
        "name": "Fidelity Securities Lending Cash Central Fund",
        "value": "1542853.10",
        "weight": "0.00939749",
        "shared": false
      },
      {
        "name": "HOST HOTELS & RE",
        "value": "1466019.48",
        "weight": "0.00892950",
        "shared": true
      },
      {
        "name": "REGENCY CENTERS CORP REIT",
        "value": "1428543.48",
        "weight": "0.00870123",
        "shared": true
      },
      {
        "name": "HEALTHPEAK PROPERTIES INC",
        "value": "1379562.04",
        "weight": "0.00840289",
        "shared": true
      },
      {
        "name": "GAMING AND LEISURE PROPRTI INC",
        "value": "1368857.75",
        "weight": "0.00833769",
        "shared": true
      },
      {
        "name": "CAMDEN PROP TR",
        "value": "1309799.55",
        "weight": "0.00797796",
        "shared": true
      },
      {
        "name": "UDR INC",
        "value": "1302590.45",
        "weight": "0.00793405",
        "shared": true
      },
      {
        "name": "OMEGA HEALTHCARE INVESTORS INC",
        "value": "1297180.56",
        "weight": "0.00790110",
        "shared": true
      },
      {
        "name": "LAMAR ADVERTISING CO CL A",
        "value": "1261672.23",
        "weight": "0.00768482",
        "shared": true
      },
      {
        "name": "EQUITY LIFESTYLE PPTYS INC",
        "value": "1253671.82",
        "weight": "0.00763609",
        "shared": true
      },
      {
        "name": "AMERICAN HOMES-A",
        "value": "1155018.96",
        "weight": "0.00703520",
        "shared": true
      },
      {
        "name": "ZILLOW GROUP INC CL C",
        "value": "1103025.00",
        "weight": "0.00671850",
        "shared": true
      },
      {
        "name": "BXP INC",
        "value": "1084839.25",
        "weight": "0.00660773",
        "shared": true
      },
      {
        "name": "REXFORD INDUSTRIAL REALTY INC",
        "value": "996754.29",
        "weight": "0.00607121",
        "shared": true
      },
      {
        "name": "EASTGROUP PROP",
        "value": "980856.00",
        "weight": "0.00597437",
        "shared": true
      },
      {
        "name": "ALEXANDRIA REAL ES EQ INC REIT",
        "value": "973684.80",
        "weight": "0.00593070",
        "shared": true
      },
      {
        "name": "CUBESMART",
        "value": "955701.45",
        "weight": "0.00582116",
        "shared": true
      },
      {
        "name": "BRIXMOR PROPERTY",
        "value": "903439.17",
        "weight": "0.00550283",
        "shared": true
      },
      {
        "name": "CARETRUST REIT INC",
        "value": "896869.46",
        "weight": "0.00546281",
        "shared": false
      },
      {
        "name": "FIRST INDUSTRIAL REALTY TRUST",
        "value": "859424.30",
        "weight": "0.00523474",
        "shared": true
      },
      {
        "name": "NNN REIT INC",
        "value": "858235.32",
        "weight": "0.00522749",
        "shared": true
      },
      {
        "name": "FED REALTY INVS",
        "value": "843775.56",
        "weight": "0.00513942",
        "shared": true
      },
      {
        "name": "COMPASS INC - A",
        "value": "826758.20",
        "weight": "0.00503577",
        "shared": false
      },
      {
        "name": "AGREE REALTY CORP",
        "value": "813815.41",
        "weight": "0.00495693",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "WELLTOWER INC",
        "value": "395594973.35",
        "weight": "0.09995334",
        "shared": true
      },
      {
        "name": "PROLOGIS INC REIT",
        "value": "364580726.52",
        "weight": "0.09211710",
        "shared": true
      },
      {
        "name": "EQUINIX INC",
        "value": "186170121.52",
        "weight": "0.04703883",
        "shared": true
      },
      {
        "name": "DIGITAL REALTY TRUST INC",
        "value": "183904124.79",
        "weight": "0.04646629",
        "shared": true
      },
      {
        "name": "SIMON PROPERTY",
        "value": "181924014.71",
        "weight": "0.04596599",
        "shared": true
      },
      {
        "name": "REALTY INCOME CORP REIT",
        "value": "174793401.30",
        "weight": "0.04416433",
        "shared": true
      },
      {
        "name": "AMERICAN TOWER CORP",
        "value": "174494775.10",
        "weight": "0.04408887",
        "shared": true
      },
      {
        "name": "PUBLIC STORAGE",
        "value": "135205959.68",
        "weight": "0.03416193",
        "shared": true
      },
      {
        "name": "CBRE GROUP INC - CL A",
        "value": "124376391.88",
        "weight": "0.03142567",
        "shared": true
      },
      {
        "name": "VENTAS INC REIT",
        "value": "122742375.30",
        "weight": "0.03101281",
        "shared": true
      },
      {
        "name": "CROWN CASTLE INC",
        "value": "111891504.10",
        "weight": "0.02827116",
        "shared": true
      },
      {
        "name": "IRON MOUNTAIN INC",
        "value": "95483944.76",
        "weight": "0.02412553",
        "shared": true
      },
      {
        "name": "VICI PROPERTIES",
        "value": "92271469.56",
        "weight": "0.02331385",
        "shared": true
      },
      {
        "name": "EXTRA SPACE STORAGE INC",
        "value": "87949153.26",
        "weight": "0.02222175",
        "shared": true
      },
      {
        "name": "AVALONBAY COMMUNITIES INC REIT",
        "value": "73089160.65",
        "weight": "0.01846714",
        "shared": true
      },
      {
        "name": "EQUITY RESIDENTIAL REIT",
        "value": "64261447.25",
        "weight": "0.01623667",
        "shared": true
      },
      {
        "name": "SBA COMMUNICATIONS CORP",
        "value": "57947715.90",
        "weight": "0.01464141",
        "shared": true
      },
      {
        "name": "WEYERHAEUSER CO",
        "value": "55623982.96",
        "weight": "0.01405428",
        "shared": true
      },
      {
        "name": "COSTAR GROUP INC",
        "value": "54026555.20",
        "weight": "0.01365067",
        "shared": true
      },
      {
        "name": "ESSEX PROPERTY TRUST INC",
        "value": "49280396.00",
        "weight": "0.01245147",
        "shared": true
      },
      {
        "name": "ANNALY CAPITAL MGMT INC REIT",
        "value": "48012551.55",
        "weight": "0.01213113",
        "shared": false
      },
      {
        "name": "KIMCO REALTY CORPORATION",
        "value": "47863998.63",
        "weight": "0.01209360",
        "shared": true
      },
      {
        "name": "WP CAREY INC",
        "value": "47062300.00",
        "weight": "0.01189104",
        "shared": true
      },
      {
        "name": "SUN COMMUNITIES INC - REIT",
        "value": "46270524.28",
        "weight": "0.01169098",
        "shared": true
      },
      {
        "name": "JONES LANG LASALLE INC",
        "value": "45385067.52",
        "weight": "0.01146726",
        "shared": true
      },
      {
        "name": "MID AMERICA APT CMNTY INC",
        "value": "45111616.48",
        "weight": "0.01139817",
        "shared": true
      },
      {
        "name": "INVITATION HOMES INC",
        "value": "44286924.50",
        "weight": "0.01118979",
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      },
      {
        "name": "OMEGA HEALTHCARE INVESTORS INC",
        "value": "40927748.54",
        "weight": "0.01034104",
        "shared": true
      },
      {
        "name": "GAMING AND LEISURE PROPRTI INC",
        "value": "39680135.37",
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      },
      {
        "name": "REGENCY CENTERS CORP REIT",
        "value": "39356062.20",
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      },
      {
        "name": "HOST HOTELS & RE",
        "value": "38721938.48",
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      },
      {
        "name": "EQUITY LIFESTYLE PPTYS INC",
        "value": "38233560.82",
        "weight": "0.00966032",
        "shared": true
      },
      {
        "name": "HEALTHPEAK PROPERTIES INC",
        "value": "36085800.48",
        "weight": "0.00911765",
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      },
      {
        "name": "AGNC INVESTMENT CORP",
        "value": "35105090.27",
        "weight": "0.00886986",
        "shared": false
      },
      {
        "name": "LAMAR ADVERTISING CO CL A",
        "value": "34766650.08",
        "weight": "0.00878435",
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      },
      {
        "name": "UDR INC",
        "value": "32102620.32",
        "weight": "0.00811124",
        "shared": true
      },
      {
        "name": "CAMDEN PROP TR",
        "value": "31912260.54",
        "weight": "0.00806314",
        "shared": true
      },
      {
        "name": "EASTGROUP PROP",
        "value": "31142317.95",
        "weight": "0.00786860",
        "shared": true
      },
      {
        "name": "AMERICAN HOMES-A",
        "value": "28763323.60",
        "weight": "0.00726751",
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      },
      {
        "name": "AGREE REALTY CORP",
        "value": "28544596.88",
        "weight": "0.00721225",
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      },
      {
        "name": "BRIXMOR PROPERTY",
        "value": "27902102.40",
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      },
      {
        "name": "CUBESMART",
        "value": "26409660.15",
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      },
      {
        "name": "FED REALTY INVS",
        "value": "26349851.32",
        "weight": "0.00665771",
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      },
      {
        "name": "NNN REIT INC",
        "value": "25226574.12",
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      },
      {
        "name": "FIRST INDUSTRIAL REALTY TRUST",
        "value": "24226133.75",
        "weight": "0.00612112",
        "shared": true
      },
      {
        "name": "BXP INC",
        "value": "24182286.00",
        "weight": "0.00611004",
        "shared": true
      },
      {
        "name": "REXFORD INDUSTRIAL REALTY INC",
        "value": "23810911.35",
        "weight": "0.00601620",
        "shared": true
      },
      {
        "name": "ZILLOW GROUP INC CL C",
        "value": "23085488.20",
        "weight": "0.00583291",
        "shared": true
      },
      {
        "name": "ALEXANDRIA REAL ES EQ INC REIT",
        "value": "22878746.88",
        "weight": "0.00578068",
        "shared": true
      },
      {
        "name": "STAG INDUSTRIAL INC CL A",
        "value": "21768340.20",
        "weight": "0.00550012",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-002040",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226002040/0000035402-26-002040-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001004726-26-003750",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000100472626003750/0001004726-26-003750-index.htm"
    }
  ]
}