VTBNX — Vanguard Total Bond Market II Index Fund
Data updated: 2026-05-28
VTBNX — Vanguard Total Bond Market II Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Intermediate Total / Aggregate Bond · $367.43B AUM · 0.02% expense ratio · 4.2% 1-yr return. From SEC regulatory filings.
VTBNX Fund Overview
VTBNX — Vanguard Total Bond Market II Index Fund is a US mutual fund 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 mutual fund
- Manager: Vanguard Bond Index Funds
- Category: Intermediate Total / Aggregate Bond
- Assets under management: $367.43B
- 1-year return: 4.2%
- Ticker: VTBNX
- SEC CIK: 0000794105
- SEC series ID: S000025158
- Share class ID: C000075028
VTBNX Holdings
Top 10 holdings of Vanguard Total Bond Market II 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 | 5.47% |
| United States Treasury Note/Bond | 1.47% |
| United States Treasury Note/Bond | 1.42% |
| United States Treasury Note/Bond | 0.81% |
| United States Treasury Note/Bond | 0.69% |
| United States Treasury Note/Bond | 0.58% |
| United States Treasury Note/Bond | 0.40% |
| United States Treasury Note/Bond | 0.38% |
| United States Treasury Note/Bond | 0.38% |
| United States Treasury Note/Bond | 0.36% |
VTBNX Portfolio Allocation
Asset-class allocation of Vanguard Total Bond Market II Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 77.4% |
| Securitized | 21.4% |
| Cash & Equivalents | 5.5% |
VTBNX Performance
Total returns for VTBNX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.0% |
| 1 year | 4.2% |
| 3 years (annualised) | 3.6% |
| 5 years (annualised) | 0.3% |
VTBNX Risk Information
Risk metrics for VTBNX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.3%
VTBNX Costs and Fees
VTBNX costs about $2 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.02%
- Gross expense ratio: 0.02%
- Portfolio turnover: 107%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
VTBNX Cashflows
Over the 12 months to 2026-03, Vanguard Total Bond Market II Index Fund had net inflows of $50.06B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $1.83B |
| 2026-02 | $5.75B |
| 2026-01 | $12.80B |
| 2025-12 | $6.03B |
| 2025-11 | $1.82B |
| 2025-10 | $5.64B |
VTBNX Debt Constituents
Largest debt holdings of Vanguard Total Bond Market II Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Note/Bond | 1.47% |
| United States Treasury Note/Bond | 1.42% |
| United States Treasury Note/Bond | 0.81% |
| United States Treasury Note/Bond | 0.69% |
| United States Treasury Note/Bond | 0.58% |
| United States Treasury Note/Bond | 0.40% |
| United States Treasury Note/Bond | 0.38% |
| United States Treasury Note/Bond | 0.38% |
| United States Treasury Note/Bond | 0.36% |
| United States Treasury Note/Bond | 0.36% |
VTBNX Prospectus and SEC Filings
Official Vanguard Total Bond Market II Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
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.