{
 "ticker": "MBBA",
 "name": "iShares Mortgage-Backed Securities Active ETF",
 "issuer": "iShares",
 "desk": "core",
 "url": "https://etfiq.com/funds/mbba",
 "html": "https://etfiq.com/funds/mbba",
 "markdown": "https://etfiq.com/funds/mbba.md",
 "as_of": "2026-10-14",
 "verdict": "MBBA is actively managed and returned \u22122.8% since it first traded on Jan 26, 2026.",
 "lead": "MBBA returned \u22122.8% from Jan 26, 2026 to Oct 14, 2026, charges 0.25% a year and holds $721m in net assets on Oct 14, 2026.",
 "category": {
  "id": "bonds",
  "name": "Bonds",
  "label": "Bond ETFs",
  "url": "https://etfiq.com/bonds/",
  "group": {
   "id": "taxable-bonds",
   "name": "Taxable bonds"
  },
  "segment": {
   "id": "government-mortgage",
   "name": "Government mortgage-backed",
   "url": "https://etfiq.com/bonds/government-mortgage/"
  },
  "status": "classified",
  "as_of": "2026-10-15",
  "method": "https://etfiq.com/methodology/categories"
 },
 "key_facts": [
  {
   "key": "total_return_since_launch",
   "label": "Total return, since launch, Jan 26, 2026",
   "value": "\u22122.8%",
   "source": null,
   "as_of": "2026-10-14",
   "sentence": "MBBA, total return, since launch, Jan 26, 2026: \u22122.8%, as of Oct 14, 2026."
  },
  {
   "key": "expense_ratio",
   "label": "Expense ratio",
   "value": "0.25%",
   "source": null,
   "as_of": "2026-10-14",
   "sentence": "MBBA, expense ratio: 0.25%, as of Oct 14, 2026."
  },
  {
   "key": "holdings",
   "label": "Holdings",
   "value": "695",
   "source": null,
   "as_of": "2026-10-14",
   "sentence": "MBBA, holdings: 695, as of Oct 14, 2026."
  },
  {
   "key": "below_its_high",
   "label": "Below its high",
   "value": "\u22124.5%",
   "source": null,
   "as_of": "2026-10-14",
   "sentence": "MBBA, below its high: \u22124.5%, as of Oct 14, 2026."
  },
  {
   "key": "last_payment",
   "label": "Last payment (paid monthly), ex-date Oct 1, 2026",
   "value": "$0.0747",
   "source": null,
   "as_of": "2026-10-14",
   "sentence": "MBBA, last payment (paid monthly), ex-date Oct 1, 2026: $0.0747, as of Oct 14, 2026."
  },
  {
   "key": "net_assets",
   "label": "Net assets",
   "value": "$721m",
   "source": "the issuer\u2019s own daily fund list, as of Oct 14, 2026",
   "as_of": "2026-10-14",
   "sentence": "MBBA, net assets: $721m (the issuer\u2019s own daily fund list, as of Oct 14, 2026)."
  }
 ],
 "fields": [
  {
   "key": "what_it_tracks",
   "label": "What it tracks",
   "value": "No index, actively managed",
   "source": null
  },
  {
   "key": "fund_type",
   "label": "Fund type",
   "value": "Bond fund",
   "source": null
  },
  {
   "key": "category",
   "label": "Category",
   "value": "Bonds \u00b7 Government mortgage-backed",
   "source": "ETFIQ"
  },
  {
   "key": "expense_ratio",
   "label": "Expense ratio",
   "value": "0.25%",
   "source": "485BPOS XBRL, Aug 27, 2026"
  },
  {
   "key": "price",
   "label": "Price",
   "value": "$47.22",
   "source": null
  },
  {
   "key": "first_traded",
   "label": "First traded",
   "value": "Jan 26, 2026",
   "source": null
  },
  {
   "key": "net_assets",
   "label": "Net assets",
   "value": "$721m",
   "source": "the issuer\u2019s own daily fund list, as of Oct 14, 2026"
  },
  {
   "key": "benchmark",
   "label": "Benchmark",
   "value": "Its own holdings, as of Oct 13, 2026; its prospectus names no index it tracks",
   "source": "ETFIQ, from its filings"
  },
  {
   "key": "below_its_high",
   "label": "Below its high",
   "value": "\u22124.5%",
   "source": "ETFIQ"
  },
  {
   "key": "holdings",
   "label": "Holdings",
   "value": "695",
   "source": null
  },
  {
   "key": "top_ten_weight",
   "label": "Top ten weight",
   "value": "not published",
   "source": null
  },
  {
   "key": "holdings_published_for",
   "label": "Holdings published for",
   "value": "Oct 13, 2026",
   "source": "the issuer\u2019s daily file"
  },
  {
   "key": "holdings_as_of_the_close_of",
   "label": "Holdings as of the close of",
   "value": "Oct 13, 2026",
   "source": "the issuer\u2019s daily file"
  },
  {
   "key": "why_no_share_is_published",
   "label": "Why no share is published",
   "value": "Holdings are gross exposure, not a portfolio",
   "source": null
  }
 ],
 "periods": [
  {
   "window": "1 month",
   "Total return": "\u22121.0%"
  },
  {
   "window": "3 months",
   "Total return": "\u22123.5%"
  },
  {
   "window": "6 months",
   "Total return": "\u22123.5%"
  },
  {
   "window": "Since launch",
   "Total return": "\u22122.8%"
  }
 ],
 "questions": [
  {
   "q": "What does MBBA cost?",
   "a": "The prospectus expense ratio is 0.25% a year."
  },
  {
   "q": "How far is MBBA below its high?",
   "a": "4.5% below its high of Feb 27, 2026, measured on the reinvested series to Oct 14, 2026."
  }
 ],
 "flows": {
  "as_of": "2026-10-14",
  "coverage": "daily",
  "computed_by": "ETFIQ, from the change in shares outstanding times the previous day\u2019s NAV",
  "method": "https://etfiq.com/methodology/flows",
  "data": "https://etfiq.com/data/flows/funds/mbba.json",
  "windows": [
   {
    "window": "1 day",
    "from": "2026-10-14",
    "to": "2026-10-14",
    "net_flow_usd": 1886133,
    "net_flow": "+$1.9m",
    "round_trip_usd": 0,
    "days_counted": 1,
    "trading_days": 1
   },
   {
    "window": "1 week",
    "from": "2026-10-08",
    "to": "2026-10-14",
    "net_flow_usd": 7506797,
    "net_flow": "+$7.5m",
    "round_trip_usd": 0,
    "days_counted": 5,
    "trading_days": 5
   },
   {
    "window": "1 month",
    "from": "2026-09-15",
    "to": "2026-10-14",
    "net_flow_usd": 575891426,
    "net_flow": "+$576m",
    "round_trip_usd": 0,
    "days_counted": 22,
    "trading_days": 22
   },
   {
    "window": "3 months",
    "from": "2026-07-15",
    "to": "2026-10-14",
    "net_flow_usd": 582721331,
    "net_flow": "+$583m",
    "round_trip_usd": 0,
    "days_counted": 65,
    "trading_days": 65
   }
  ],
  "daily_counts_start": "2026-01-26",
  "windows_without_daily_figure": [
   "Year to date",
   "1 year"
  ]
 },
 "generated": "2026-10-15",
 "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, MBBA, bond fund, data as of Oct 14, 2026. https://etfiq.com/funds/mbba"
}