{
  "page": "compare",
  "query": {
    "a": "MSTZX",
    "b": "MPHAX"
  },
  "retrieved_at": "2026-07-07T18:19:01+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": "MassMutual Short-Duration Bond Fund",
    "ticker": "MSTZX",
    "slug": "MSTZX",
    "series_id": "S000003785",
    "html_url": "https://fundwatcher.app/funds/MSTZX/"
  },
  "fund_b": {
    "name": "MassMutual High Yield Fund",
    "ticker": "MPHAX",
    "slug": "MPHAX",
    "series_id": "S000003779",
    "html_url": "https://fundwatcher.app/funds/MPHAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.03324361334009849572422114397",
    "coverage_b_by_a": "0.03324361334009849572422114397",
    "shared_count": 5,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "Phillips 66",
        "value": "2997988.50",
        "weight": "0.02346270",
        "shared": false
      },
      {
        "name": "Fortive Corp",
        "value": "2988090.30",
        "weight": "0.02338523",
        "shared": false
      },
      {
        "name": "CRH America Finance Inc",
        "value": "2978813.10",
        "weight": "0.02331263",
        "shared": false
      },
      {
        "name": "Charles Schwab Corp/The",
        "value": "2967702.60",
        "weight": "0.02322567",
        "shared": false
      },
      {
        "name": "Bayer Corporation 0% CP 20/07/2026",
        "value": "2961732.90",
        "weight": "0.02317895",
        "shared": false
      },
      {
        "name": "522 Funding CLO 2018-3A Ltd",
        "value": "2352573.89",
        "weight": "0.01841159",
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      },
      {
        "name": "FIXED INC CLEARING CORP.REPO",
        "value": "2299785.92",
        "weight": "0.01799846",
        "shared": true
      },
      {
        "name": "Keurig Dr Pepper Inc 0% CP 23/04/2026",
        "value": "1994546.20",
        "weight": "0.01560961",
        "shared": false
      },
      {
        "name": "Penske Truck Leasing Co LP / PTL Finance Corp. 0% CP 28/04/2026",
        "value": "1993550.60",
        "weight": "0.01560182",
        "shared": false
      },
      {
        "name": "VW Credit Inc",
        "value": "1984935.60",
        "weight": "0.01553440",
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      },
      {
        "name": "BHG Securitization Trust, Series 2021-B, Class C",
        "value": "1497844.84",
        "weight": "0.01172235",
        "shared": false
      },
      {
        "name": "Enterprise Fleet Financing LLC, Series 2026-1, Class A2",
        "value": "1297288.59",
        "weight": "0.01015277",
        "shared": false
      },
      {
        "name": "Elmwood CLO I Ltd., Series 2019-1A, Class A1R3",
        "value": "1247503.75",
        "weight": "0.00976315",
        "shared": false
      },
      {
        "name": "WLAKE 2025-2A A3",
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        "weight": "0.00942080",
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      },
      {
        "name": "LAD AUTO RECEIVABLES TRUST 2023-3 SER 2023-3A CL C REGD 144A P/P 6.43000000",
        "value": "1015210.10",
        "weight": "0.00794518",
        "shared": false
      },
      {
        "name": "AFFRM 2024-B A 144A 4.62% 09-15-29",
        "value": "1002130.30",
        "weight": "0.00784282",
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      },
      {
        "name": "SDART 2025-3 A3",
        "value": "1001453.20",
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      },
      {
        "name": "Nelnet Student Loan Trust 2018-5",
        "value": "954597.60",
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      },
      {
        "name": "State Street Navigator Securities Lending Government Money Market Portfolio",
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      },
      {
        "name": "HPS LOAN MANAGEMENT 2021-16 LTD HLM 2021-16A A1R",
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      },
      {
        "name": "BLUE OWL TECHNOL",
        "value": "866987.32",
        "weight": "0.00678517",
        "shared": false
      },
      {
        "name": "GOLUB CAPITAL",
        "value": "847244.50",
        "weight": "0.00663066",
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      },
      {
        "name": "Sofi Professional Loan Program 2019-A LLC",
        "value": "840466.11",
        "weight": "0.00657761",
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      },
      {
        "name": "ENSTAR GROUP LTD",
        "value": "816182.85",
        "weight": "0.00638757",
        "shared": false
      },
      {
        "name": "Woori Bank",
        "value": "810452.35",
        "weight": "0.00634272",
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      },
      {
        "name": "SANTOS FINANCE LTD REGD 144A P/P 3.64900000",
        "value": "771981.87",
        "weight": "0.00604164",
        "shared": false
      },
      {
        "name": "BGC GROUP INC",
        "value": "762820.29",
        "weight": "0.00596994",
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      {
        "name": "OAK STREET INVESTMENT GRADE NET LEASE FUND SERIES OAKIG 2020-1A A1",
        "value": "758871.44",
        "weight": "0.00593904",
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      },
      {
        "name": "Symphony CLO XXII Ltd",
        "value": "750068.25",
        "weight": "0.00587014",
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      },
      {
        "name": "BLACKSTONE SEC",
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      {
        "name": "Whitebox CLO III Ltd., Series 2021-3A, Class A1R",
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      {
        "name": "CIFC Funding 2022-IV Ltd",
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      {
        "name": "PIEDMONT OPERAT",
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      {
        "name": "ANGINC 5.25 06/03/30 144A",
        "value": "697147.26",
        "weight": "0.00545598",
        "shared": false
      },
      {
        "name": "HUMANA INC",
        "value": "682254.75",
        "weight": "0.00533943",
        "shared": false
      },
      {
        "name": "SMB PRIVATE EDUCATION LOAN TRUST 2023-D SER 2023-D CL A1B V/R REGD 144A P/P 5.63385000",
        "value": "664458.00",
        "weight": "0.00520015",
        "shared": false
      },
      {
        "name": "Laurel Road Prime Student Loan Trust 2019-A",
        "value": "664377.46",
        "weight": "0.00519951",
        "shared": false
      },
      {
        "name": "SYNOVUS BANK GA",
        "value": "660320.25",
        "weight": "0.00516776",
        "shared": false
      },
      {
        "name": "MORGAN STANLEY",
        "value": "633033.13",
        "weight": "0.00495421",
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      {
        "name": "NWSA 3.875 05/15/29 144A",
        "value": "632123.71",
        "weight": "0.00494709",
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      },
      {
        "name": "HIGHWOODS REALTY",
        "value": "632038.73",
        "weight": "0.00494643",
        "shared": false
      },
      {
        "name": "Cox Enterprises, Inc. 1.80 10/01/2030",
        "value": "630396.44",
        "weight": "0.00493357",
        "shared": false
      },
      {
        "name": "Fortitude Global Funding 4.63 10/06/2028",
        "value": "621625.07",
        "weight": "0.00486493",
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      },
      {
        "name": "JH North America Holdings Inc.",
        "value": "620798.57",
        "weight": "0.00485846",
        "shared": false
      },
      {
        "name": "CELANESE US HLDS",
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        "weight": "0.00484259",
        "shared": false
      },
      {
        "name": "ELLINGTON FINANCIAL MORTGAGE T EFMT 2024 INV2 A2 144A",
        "value": "617468.91",
        "weight": "0.00483240",
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      },
      {
        "name": "Ellington Financial Mortgage Trust",
        "value": "616954.00",
        "weight": "0.00482837",
        "shared": false
      },
      {
        "name": "ORACLE CORP",
        "value": "616756.08",
        "weight": "0.00482682",
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      {
        "name": "Citadel Finance LLC",
        "value": "616284.73",
        "weight": "0.00482313",
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      {
        "name": "TRTN 2.05 04/15/26 144A",
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    "b_top": [
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        "name": "State Street Navigator Securities Lending Government Money Market Portfolio",
        "value": "31415767.50",
        "weight": "0.05862035",
        "shared": true
      },
      {
        "name": "FIXED INC CLEARING CORP.REPO",
        "value": "31294617.87",
        "weight": "0.05839429",
        "shared": true
      },
      {
        "name": "SUPERIOR PLUS LP / SUPERIOR GEN PARTNER INC 4.5% 03/15/2029 144A",
        "value": "9348897.60",
        "weight": "0.01744461",
        "shared": false
      },
      {
        "name": "SSW 5.5 08/01/29 144A",
        "value": "8560044.15",
        "weight": "0.01597264",
        "shared": false
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      {
        "name": "PRA GROUP INC REGD 144A P/P 5.00000000",
        "value": "8441317.43",
        "weight": "0.01575110",
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      },
      {
        "name": "ITT HOLDINGS LLC SR UNSECURED 144A 08/29 6.5",
        "value": "8284321.46",
        "weight": "0.01545816",
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      {
        "name": "California Buyer Ltd. / Atlantica Sustainable Infrastructure PLC",
        "value": "7673942.34",
        "weight": "0.01431922",
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      {
        "name": "SUN V7.875 PERP 144A",
        "value": "7250305.63",
        "weight": "0.01352873",
        "shared": false
      },
      {
        "name": "TEAM HEALTH HOLDINGS INC 144A 13.500000% 06/30/2028",
        "value": "6646665.47",
        "weight": "0.01240237",
        "shared": false
      },
      {
        "name": "Lightning Power LLC",
        "value": "6401103.98",
        "weight": "0.01194416",
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      {
        "name": "TLN 8.625 06/01/30 144A",
        "value": "6230468.30",
        "weight": "0.01162576",
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      },
      {
        "name": "Jefferson Capital Holdings, LLC",
        "value": "5618868.88",
        "weight": "0.01048455",
        "shared": false
      },
      {
        "name": "ARCOSA INC REGD 144A P/P 4.37500000",
        "value": "5549185.63",
        "weight": "0.01035452",
        "shared": false
      },
      {
        "name": "Atlantica Sustainable Infrastructure Ltd",
        "value": "5383318.52",
        "weight": "0.01004502",
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      },
      {
        "name": "XPLR INFRASTRUCTURE OPERATING SR UNSECURED 144A 01/29 7.25",
        "value": "5250804.93",
        "weight": "0.00979776",
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      },
      {
        "name": "Consolidated Energy Finance SA",
        "value": "4884406.25",
        "weight": "0.00911407",
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      },
      {
        "name": "MOLINA HEALTHCARE INC SR UNSECURED 144A 06/28 4.375",
        "value": "4301051.87",
        "weight": "0.00802556",
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      },
      {
        "name": "PROG HOLDINGS INC REGD 144A P/P 6.00000000",
        "value": "4076545.00",
        "weight": "0.00760664",
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      },
      {
        "name": "Nexstar Media Inc",
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      {
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      {
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        "value": "3982871.97",
        "weight": "0.00743185",
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      },
      {
        "name": "Icahn Enterprises LP / Icahn Enterprises Finance Corp",
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        "weight": "0.00735041",
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      {
        "name": "Trident TPI Holdings, Inc./Term Loan 10/24",
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      {
        "name": "1261229 BC Ltd",
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      {
        "name": "Cloud Software Group, Inc.",
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      {
        "name": "Clydesdale Acquisition Holdings Inc",
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      {
        "name": "CSTM 3.75 04/15/29 144A",
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      },
      {
        "name": "GGAM Finance Ltd.",
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      {
        "name": "KRC Materials, Inc.",
        "value": "3689677.33",
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      },
      {
        "name": "BAUSCH HEALTH TERM B 1LN 10/08/2030",
        "value": "3649703.35",
        "weight": "0.00681018",
        "shared": false
      },
      {
        "name": "Carvana Co.",
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        "weight": "0.00664673",
        "shared": false
      },
      {
        "name": "ATKR 4.25 06/01/31 144A",
        "value": "3561122.39",
        "weight": "0.00664489",
        "shared": false
      },
      {
        "name": "Flutter Treasury DAC",
        "value": "3485247.42",
        "weight": "0.00650331",
        "shared": false
      },
      {
        "name": "RGCARE 10 06/01/32 144A",
        "value": "3468097.86",
        "weight": "0.00647131",
        "shared": false
      },
      {
        "name": "RADPAR 8.5 07/15/32 144A",
        "value": "3380242.58",
        "weight": "0.00630737",
        "shared": false
      },
      {
        "name": "POINDEXTER JB INC 8.75% 12/15/2031 144A",
        "value": "3283966.80",
        "weight": "0.00612773",
        "shared": false
      },
      {
        "name": "SUNOCO LP SR UNSECURED 144A 10/29 4.5",
        "value": "3196462.18",
        "weight": "0.00596445",
        "shared": false
      },
      {
        "name": "RGCARE 9.875 08/15/30 144A",
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        "weight": "0.00586061",
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      },
      {
        "name": "API GRP. DE INC 4.125%",
        "value": "3077773.16",
        "weight": "0.00574298",
        "shared": false
      },
      {
        "name": "XPLR INFRASTRUCTURE LP REGD 144A P/P CONVERTIBLE 2.50000000",
        "value": "2909610.00",
        "weight": "0.00542920",
        "shared": false
      },
      {
        "name": "XPLR INFRASTRUCTURE OPERATING PARTNERS LP 144A 4.500000% 09/15/2027",
        "value": "2861280.34",
        "weight": "0.00533902",
        "shared": false
      },
      {
        "name": "Herbalife Nutrition Ltd.",
        "value": "2811915.00",
        "weight": "0.00524690",
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      },
      {
        "name": "Level 3 Financing, Inc.",
        "value": "2763681.90",
        "weight": "0.00515690",
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      },
      {
        "name": "Jefferson Capital Holdings, LLC",
        "value": "2759419.67",
        "weight": "0.00514895",
        "shared": false
      },
      {
        "name": "Uniti Group LP / Uniti Group Finance 2019 Inc / CSL Capital LLC",
        "value": "2727504.89",
        "weight": "0.00508940",
        "shared": false
      },
      {
        "name": "Kioxia Holdings Corp.",
        "value": "2723735.85",
        "weight": "0.00508236",
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      },
      {
        "name": "MIDWEST PHYSICIAN ADMINS",
        "value": "2692794.83",
        "weight": "0.00502463",
        "shared": false
      },
      {
        "name": "ONEMAIN FINANCE CORP SR UNSEC 3.875% 09-15-28",
        "value": "2687593.76",
        "weight": "0.00501492",
        "shared": false
      },
      {
        "name": "Digicel International Finance Ltd / Difl US LLC",
        "value": "2683455.38",
        "weight": "0.00500720",
        "shared": false
      },
      {
        "name": "ENCORE CAPITAL GROUP INC SR SECURED 144A 05/30 8.5",
        "value": "2618966.78",
        "weight": "0.00488687",
        "shared": false
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-053584",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/927972/000141036826053584/0001410368-26-053584-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-053574",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/927972/000141036826053574/0001410368-26-053574-index.htm"
    }
  ]
}