Vanguard Long-Term Bond Index Fund

C000007059 Fund Overview

Vanguard Long-Term Bond Index Fund is a US ETF managed by Vanguard Bond Index Funds, categorised as Long Treasury / Sovereign Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.

• Type: US ETF
• Manager: Vanguard Bond Index Funds
• Category: Long Treasury / Sovereign Bond
• Assets under management: $8.66B
• SEC CIK: 0000794105
• SEC series ID: S000002562
• Share class ID: C000007059

C000007059 Investment Objective and Strategy

Vanguard Long-Term Bond Index Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Vanguard Bond Index Funds.

Investment objective

Vanguard Long-Term Bond ETF, an exchange-traded share class of Vanguard Long-Term Bond Index Fund (the Fund), seeks to track the performance of a market-weighted bond index with a long-term dollar-weighted average maturity.

Principal investment strategy

The Fund employs an indexing investment approach designed to track the performance of the Bloomberg U.S. Long Government/Credit Float Adjusted Index (the Target Index), which includes all medium and larger issues of U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds that have maturities of greater than 10 years and are publicly issued. Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the bonds that make up the Target Index. The Fund invests by sampling the Target Index, meaning that it holds a range of securities that, in the aggregate, approximates the full Target Index in terms of key risk factors and other characteristics. The Fund maintains a dollar-weighted average maturity consistent with that of the Target Index.

As of December 31, 2025, the dollar-weighted average maturity of the Target Index was 22.04 years.

C000007059 Holdings

Top 10 holdings of Vanguard Long-Term Bond Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.

View all C000007059 holdings

C000007059 Portfolio Allocation

Asset-class allocation of Vanguard Long-Term Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.

C000007059 Costs and Fees

C000007059 costs about $15 per $10,000 invested per year in fund expenses.

• Net expense ratio: 0.15%
• Gross expense ratio: 0.15%
• Portfolio turnover: 24%
• Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)

C000007059 Cashflows

Over the 12 months to 2026-06, Vanguard Long-Term Bond Index Fund had net inflows of $338.45M, from monthly SEC N-PORT filings.

C000007059 Debt Constituents

Largest debt holdings of Vanguard Long-Term Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.

C000007059 Prospectus and SEC Filings

Official Vanguard Long-Term Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

• Prospectus (485BPOS) — filed 2026-04-28
• Prospectus (485BPOS) — filed 2025-04-29
• Prospectus supplement (497) — filed 2026-02-02
• Portfolio holdings (N-PORT) — filed 2026-08-28
• Portfolio holdings (N-PORT) — filed 2026-05-28
• Portfolio holdings (N-PORT) — filed 2026-02-26
• Annual census (N-CEN) — filed 2026-03-12
• Annual census (N-CEN) — filed 2025-03-13

Related Funds

Other Long Treasury / Sovereign Bond funds tracked on ABC INVEST:

• iShares 7-10 Year Treasury Bond ETF (IEF)
• iShares 20+ Year Treasury Bond ETF (TLT)
• U.S. Government Securities Fund (AMUSX)
• Fidelity Series Long-Term Treasury Bond Index Fund (FTLTX)
• Vanguard Long-Term Treasury Index Fund (VLGSX)

Data Sources

ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.