{
  "page": "compare",
  "query": {
    "a": "VBLIX",
    "b": "SPLB"
  },
  "retrieved_at": "2026-07-07T19:24:17+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": "VANGUARD LONG-TERM BOND INDEX FUND",
    "ticker": "VBLIX",
    "slug": "VBLIX",
    "series_id": "S000002562",
    "html_url": "https://fundwatcher.app/funds/VBLIX/"
  },
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    "slug": "SPLB",
    "series_id": "S000022924",
    "html_url": "https://fundwatcher.app/funds/SPLB/"
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  "sources": [
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      "accession_no": "0000794105-26-000183",
      "as_of": "2026-03-31",
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    }
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}