VBLAX — Vanguard Long-Term Bond Index Fund
Data updated: 2026-05-28
VBLAX — Vanguard Long-Term Bond Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Treasury / Sovereign Bond · $8.65B AUM · 0.06% expense ratio · 2.2% 1-yr return. From SEC regulatory filings.
VBLAX Fund Overview
VBLAX — 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: $8.65B
- 1-year return: 2.2%
- Ticker: VBLAX
- SEC CIK: 0000794105
- SEC series ID: S000002562
- Share class ID: C000209800
VBLAX 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.
| Holding | % of net assets |
|---|---|
| United States Treasury Note/Bond | 1.23% |
| United States Treasury Note/Bond | 1.21% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.14% |
| United States Treasury Note/Bond | 1.12% |
| United States Treasury Note/Bond | 1.10% |
| United States Treasury Note/Bond | 0.98% |
| United States Treasury Note/Bond | 0.97% |
VBLAX Portfolio Allocation
Asset-class allocation of Vanguard Long-Term Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.7% |
| Cash & Equivalents | 0.3% |
VBLAX Performance
Total returns for VBLAX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.6% |
| 1 year | 2.2% |
| 3 years (annualised) | 0.9% |
| 5 years (annualised) | -2.9% |
VBLAX Risk Information
Risk metrics for VBLAX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 7.4%
VBLAX Costs and Fees
VBLAX costs about $6 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.06%
- Gross expense ratio: 0.06%
- Portfolio turnover: 24%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
VBLAX Cashflows
Over the 12 months to 2026-03, Vanguard Long-Term Bond Index Fund had net inflows of $657.07M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $177.16M |
| 2026-02 | −$10.46M |
| 2026-01 | $91.31M |
| 2025-12 | $101.96M |
| 2025-11 | −$2.02M |
| 2025-10 | $53.41M |
VBLAX Debt Constituents
Largest debt holdings of Vanguard Long-Term Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Note/Bond | 1.23% |
| United States Treasury Note/Bond | 1.21% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.18% |
| United States Treasury Note/Bond | 1.14% |
| United States Treasury Note/Bond | 1.12% |
| United States Treasury Note/Bond | 1.10% |
| United States Treasury Note/Bond | 0.98% |
| United States Treasury Note/Bond | 0.97% |
VBLAX Prospectus and SEC Filings
Official Vanguard Long-Term Bond Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Treasury / Sovereign Bond funds tracked on ABC INVEST:
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.