VBMPX — Vanguard Total Bond Market Index Fund
Data updated: 2026-08-28
VBMPX — Vanguard Total Bond Market Index Fund. Intermediate Total / Aggregate Bond · $397.11B AUM. Holdings, fees, performance and SEC filings.
VBMPX Fund Overview
VBMPX — Vanguard Total Bond Market Index Fund is a US ETF managed by Vanguard Bond Index Funds, categorised as Intermediate Total / Aggregate 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: Intermediate Total / Aggregate Bond
- Assets under management: $397.11B
- 1-year return: 3.7%
- Ticker: VBMPX
- SEC CIK: 0000794105
- SEC series ID: S000002564
- Share class ID: C000081425
VBMPX Holdings
Top 10 holdings of Vanguard Total Bond Market Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Vanguard Cmt Funds-Vanguard Market Liquidity Fund | 0.90% |
| United States Treasury Note/Bond | 0.47% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.40% |
| United States Treasury Note/Bond | 0.39% |
VBMPX Portfolio Allocation
Asset-class allocation of Vanguard Total Bond Market Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 77.8% |
| Securitized | 20.8% |
| Cash & Equivalents | 0.9% |
VBMPX Performance
Total returns for VBMPX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.8% |
| 1 year | 3.7% |
| 3 years (annualised) | 4.2% |
| 5 years (annualised) | 0.1% |
VBMPX Risk Information
Risk metrics for VBMPX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.9%
VBMPX Costs and Fees
VBMPX costs about $2 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.02%
- Gross expense ratio: 0.02%
- Portfolio turnover: 38%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
VBMPX Cashflows
Over the 12 months to 2026-06, Vanguard Total Bond Market Index Fund had net inflows of $39.25B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $3.66B |
| 2026-05 | $5.06B |
| 2026-04 | $2.81B |
| 2026-03 | −$1.24B |
| 2026-02 | $2.94B |
| 2026-01 | $4.25B |
VBMPX Debt Constituents
Largest debt holdings of Vanguard Total Bond Market Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Note/Bond | 0.47% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.41% |
| United States Treasury Note/Bond | 0.40% |
| United States Treasury Note/Bond | 0.39% |
| United States Treasury Note/Bond | 0.39% |
VBMPX Prospectus and SEC Filings
Official Vanguard Total Bond Market 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 2025-02-03
- 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 Intermediate Total / Aggregate 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.