VEDIX — Vanguard Extended Duration Treasury Index Fund
Data updated: 2026-07-29
VEDIX — Vanguard Extended Duration Treasury Index Fund. Long Treasury / Sovereign Bond · $4.28B AUM. Holdings, fees, performance and SEC filings.
VEDIX Fund Overview
VEDIX — Vanguard Extended Duration Treasury Index Fund is a US ETF managed by Vanguard World Fund, 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 World Fund
- Category: Long Treasury / Sovereign Bond
- Assets under management: $4.28B
- 1-year return: 3.3%
- Ticker: VEDIX
- SEC CIK: 0000052848
- SEC series ID: S000018789
- Share class ID: C000051980
VEDIX Holdings
Top 10 holdings of Vanguard Extended Duration Treasury Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury Strip Coupon | 1.83% |
| United States Treasury Strip Principal | 1.76% |
| United States Treasury Strip Coupon | 1.72% |
| United States Treasury Strip Principal | 1.70% |
| United States Treasury Strip Coupon | 1.68% |
| United States Treasury Strip Principal | 1.65% |
| United States Treasury Strip Coupon | 1.60% |
| United States Treasury Strip Principal | 1.57% |
| United States Treasury Strip Coupon | 1.56% |
| United States Treasury Strip Coupon | 1.50% |
VEDIX Portfolio Allocation
Asset-class allocation of Vanguard Extended Duration Treasury Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 100.0% |
VEDIX Performance
Total returns for VEDIX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -1.1% |
| 1 year | 3.3% |
| 3 years (annualised) | -3.4% |
| 5 years (annualised) | -8.6% |
VEDIX Risk Information
Risk metrics for VEDIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 13.1%
VEDIX Costs and Fees
VEDIX costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.03%
- Portfolio turnover: 15%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
VEDIX Cashflows
Over the 12 months to 2026-05, Vanguard Extended Duration Treasury Index Fund had net inflows of $206.85M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-05 | −$198.83M |
| 2026-04 | −$124.15M |
| 2026-03 | $242.88M |
| 2026-02 | −$62.14M |
| 2026-01 | −$67.94M |
| 2025-12 | $14.64M |
VEDIX Debt Constituents
Largest debt holdings of Vanguard Extended Duration Treasury Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Strip Coupon | 1.83% |
| United States Treasury Strip Principal | 1.76% |
| United States Treasury Strip Coupon | 1.72% |
| United States Treasury Strip Principal | 1.70% |
| United States Treasury Strip Coupon | 1.68% |
| United States Treasury Strip Principal | 1.65% |
| United States Treasury Strip Coupon | 1.60% |
| United States Treasury Strip Principal | 1.57% |
| United States Treasury Strip Coupon | 1.56% |
| United States Treasury Strip Coupon | 1.50% |
VEDIX Prospectus and SEC Filings
Official Vanguard Extended Duration Treasury Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2024-12-20
- Prospectus supplement (497) — filed 2026-06-30
- Prospectus supplement (497) — filed 2025-02-03
- Portfolio holdings (N-PORT) — filed 2026-07-29
- Portfolio holdings (N-PORT) — filed 2026-04-28
- Portfolio holdings (N-PORT) — filed 2026-01-28
- Annual census (N-CEN) — filed 2025-11-12
- Annual census (N-CEN) — filed 2024-11-12
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.