VBLAX Performance — Vanguard Long-Term Bond Index Fund, Admiral Shares
Data updated: 2026-08-28
VBLAX returned +0.93% year to date and +3.89% over one year to Jun 2026. Annualised returns are +1.86% over 3 years and −3.85% over 5 years. Against its Long-Term Government Bond category average the fund came out ahead over three years but behind over one: $100 invested three years ago grew to $106, against $104 for the category, and to $104 over one year, against $104. Volatility over the past three years was 11.94% a year. In the 12 months to Jun 2026 the fund took in a net $338.5M, and assets reached $8.66B.
VBLAX Growth of $100
What $100 invested in Vanguard Long-Term Bond Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Long-Term Government Bond category average over the same months.
| Period | VBLAX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $104 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $106 | $104 |
| 5 years (Jul 2021 – Jun 2026) | $82 | $83 |
| Since data start (Jul 2019 – Jun 2026) | $96 | $97 |
VBLAX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.93% |
| 1 year | +3.89% |
| 3 years (annualised) | +1.86% |
| 5 years (annualised) | −3.85% |
VBLAX Annual Returns
Calendar-year total returns of Vanguard Long-Term Bond Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +0.93% |
| 2025 | +6.56% |
| 2024 | −4.16% |
| 2023 | +7.52% |
| 2022 | −27.22% |
| 2021 | −2.66% |
| 2020 | +16.23% |
| 2019 (Jul–Dec) | +5.35% |
VBLAX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.0% | +3.2% | −3.7% | −0.1% | +0.9% | +0.7% | — | — | — | — | — | — |
| 2025 | +0.5% | +4.4% | −1.2% | −1.1% | −1.8% | +2.8% | −0.5% | +0.5% | +3.2% | +0.9% | +0.5% | −1.6% |
| 2024 | −1.4% | −2.4% | +1.4% | −5.3% | +2.8% | +1.1% | +3.4% | +2.1% | +2.2% | −4.7% | +2.1% | −5.0% |
| 2023 | +7.1% | −5.0% | +4.4% | +0.8% | −2.8% | +0.8% | −1.1% | −2.3% | −6.2% | −4.5% | +10.0% | +7.8% |
| 2022 | −4.6% | −2.5% | −3.9% | −9.3% | −0.3% | −2.9% | +3.7% | −4.4% | −8.4% | −3.7% | +8.1% | −1.9% |
| 2021 | −2.9% | −4.2% | −3.7% | +2.2% | +0.6% | +3.8% | +2.7% | −0.3% | −2.3% | +1.6% | +1.4% | −1.1% |
| 2020 | +5.8% | +3.8% | −3.2% | +4.2% | +0.2% | +1.9% | +5.3% | −4.2% | +0.2% | −1.8% | +3.7% | −0.1% |
| 2019 | — | — | — | — | — | — | +0.8% | +8.1% | −2.0% | −0.2% | +0.2% | −1.3% |
VBLAX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 11.94%
- 3-year Sharpe ratio: -0.22 (vs 4.5% risk-free rate)
- Best month: +9.96% (Nov 2023)
- Worst month: −6.20% (Sep 2023)
VBLAX Fund Flows
Monthly money in and out of Vanguard Long-Term Bond Index Fund, from SEC Form N-PORT.
- 12-month net flow: $338.5M
- 12-month gross sales (incl. reinvestments): $2.0B
- Sales ÷ redemptions: 1.20×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $218.7M | $94.2M | $124.4M |
| May 2026 | $63.1M | $72.8M | −$9.7M |
| Apr 2026 | $77.2M | $207.0M | −$129.7M |
| Mar 2026 | $361.9M | $184.7M | $177.2M |
| Feb 2026 | $103.1M | $113.5M | −$10.5M |
| Jan 2026 | $263.4M | $172.1M | $91.3M |
| Dec 2025 | $161.4M | $59.4M | $102.0M |
| Nov 2025 | $94.0M | $96.0M | −$2.0M |
| Oct 2025 | $185.3M | $131.9M | $53.4M |
| Sep 2025 | $231.1M | $187.8M | $43.3M |
| Aug 2025 | $133.4M | $82.1M | $51.3M |
| Jul 2025 | $144.5M | $296.9M | −$152.4M |
VBLAX Assets Under Management
Net assets of Vanguard Long-Term Bond Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $8.66B |
| 2026-03-31 | $8.65B |
| 2025-12-31 | $8.52B |
| 2025-09-30 | $8.51B |
| 2025-06-30 | $8.41B |
| 2025-03-31 | $8.21B |
| 2024-12-31 | $8.28B |
| 2024-09-30 | $9.36B |
| 2024-06-30 | $8.35B |
| 2024-03-31 | $8.88B |
| 2023-12-31 | $9.48B |
| 2023-09-30 | $8.26B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.