{
 "url": "https://etfiq.com/funds/mfsb/holdings/",
 "section": "funds",
 "title": "MFSB Holdings: 407 Positions (May 31, 2026) | ETFIQ",
 "description": "MFSB holds 407 positions as of May 31, 2026. The largest is United States Treasury at 7.75%. Download the full list as a CSV.",
 "as_of": "May 31, 2026",
 "ticker": "MFSB",
 "fund": "MFS Active Core Plus Bond ETF",
 "fund_page": "https://etfiq.com/funds/mfsb",
 "positions": 407,
 "positions_listed_on_page": 100,
 "lead": "MFSB held 407 positions as of May 31, 2026. United States Treasury is the largest at 7.75%; the top 10 are 24.1% of the fund.",
 "source": {
  "name": "Form N-PORT filed with the SEC",
  "url": "https://www.sec.gov/Archives/edgar/data/2018846/000141036826075386/primary_doc.xml",
  "document": "the fund’s SEC filing",
  "book_date": "2026-05-31",
  "file_date": null
 },
 "top_positions": [
  {
   "rank": 1,
   "holding": "United States Treasury",
   "ticker": null,
   "weight_pct": 7.745,
   "page": null
  },
  {
   "rank": 2,
   "holding": "United States Treasury",
   "ticker": "T",
   "weight_pct": 3.843,
   "page": null
  },
  {
   "rank": 3,
   "holding": "United States Treasury",
   "ticker": null,
   "weight_pct": 3.491,
   "page": null
  },
  {
   "rank": 4,
   "holding": "United States Treasury",
   "ticker": null,
   "weight_pct": 3.224,
   "page": null
  },
  {
   "rank": 5,
   "holding": "United States Treasury",
   "ticker": "T",
   "weight_pct": 1.233,
   "page": null
  },
  {
   "rank": 6,
   "holding": "United States Treasury",
   "ticker": "T",
   "weight_pct": 1.188,
   "page": null
  },
  {
   "rank": 7,
   "holding": "United States Treasury",
   "ticker": "T",
   "weight_pct": 1.179,
   "page": null
  },
  {
   "rank": 8,
   "holding": "Umbs, Tba",
   "ticker": null,
   "weight_pct": 0.783,
   "page": null
  },
  {
   "rank": 9,
   "holding": "United States Treasury",
   "ticker": null,
   "weight_pct": 0.723,
   "page": null
  },
  {
   "rank": 10,
   "holding": "New Residential Mortgage Loan Trust",
   "ticker": "NRZT",
   "weight_pct": 0.651,
   "page": null
  },
  {
   "rank": 11,
   "holding": "Umbs, Tba",
   "ticker": null,
   "weight_pct": 0.634,
   "page": null
  },
  {
   "rank": 12,
   "holding": "Boston Properties LP",
   "ticker": "BXP",
   "weight_pct": 0.61,
   "page": null
  },
  {
   "rank": 13,
   "holding": "Highwoods Realty Limited Partnership",
   "ticker": null,
   "weight_pct": 0.592,
   "page": null
  },
  {
   "rank": 14,
   "holding": "Starwood Commercial Mortgage Trust",
   "ticker": null,
   "weight_pct": 0.591,
   "page": null
  },
  {
   "rank": 15,
   "holding": "Elmwood CLO VIII Ltd",
   "ticker": null,
   "weight_pct": 0.591,
   "page": null
  },
  {
   "rank": 16,
   "holding": "Bain Capital Credit CLO, Limited",
   "ticker": null,
   "weight_pct": 0.59,
   "page": null
  },
  {
   "rank": 17,
   "holding": "LoanCore 2018-CRE1 Issuer, Ltd.",
   "ticker": null,
   "weight_pct": 0.588,
   "page": null
  },
  {
   "rank": 18,
   "holding": "MF1",
   "ticker": null,
   "weight_pct": 0.578,
   "page": null
  },
  {
   "rank": 19,
   "holding": "BX Trust",
   "ticker": "BX",
   "weight_pct": 0.563,
   "page": null
  },
  {
   "rank": 20,
   "holding": "Morgan Stanley",
   "ticker": null,
   "weight_pct": 0.562,
   "page": "https://etfiq.com/holdings/ms/"
  },
  {
   "rank": 21,
   "holding": "The Boeing Company",
   "ticker": "BA",
   "weight_pct": 0.551,
   "page": "https://etfiq.com/holdings/ba/"
  },
  {
   "rank": 22,
   "holding": "Triton Container International Ltd.",
   "ticker": null,
   "weight_pct": 0.549,
   "page": null
  },
  {
   "rank": 23,
   "holding": "Jefferies Financial Group, Inc.",
   "ticker": null,
   "weight_pct": 0.549,
   "page": "https://etfiq.com/holdings/jef/"
  },
  {
   "rank": 24,
   "holding": "Onslow Bay Financial LLC",
   "ticker": null,
   "weight_pct": 0.546,
   "page": null
  },
  {
   "rank": 25,
   "holding": "HSBC Holdings plc",
   "ticker": null,
   "weight_pct": 0.531,
   "page": "https://etfiq.com/holdings/hsba/"
  }
 ],
 "top_positions_shown": 25,
 "cash": [
  {
   "holding": "Cash and other net assets",
   "weight_pct": 0.903
  }
 ],
 "weights": "share of net assets, as the source states them",
 "csv": "https://etfiq.com/funds/mfsb/holdings/mfsb-holdings.csv",
 "json_book": "https://etfiq.com/data/books/mfsb.json",
 "markdown": "https://etfiq.com/funds/mfsb/holdings/index.md",
 "publisher": {
  "@id": "https://etfiq.com/#org",
  "name": "ETFIQ",
  "url": "https://etfiq.com"
 },
 "license": "https://etfiq.com/license/",
 "license_text": "Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.",
 "citation": "ETFIQ, Holdings of MFSB, data as of May 31, 2026. https://etfiq.com/funds/mfsb/holdings/"
}