Fund · Vanguard 0-3 Month Treasury Bill ETF · measured from SEC filings
VBIL holdings
VBIL reports 27 holdings and behaves like 22.4 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-06-30. The fact sheet publishes the first number; this page computes the second, and traces it across 6 quarters of filings.
Measured concentration
as of 2026-06-30Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 0.04% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-06-30VBIL's largest investment is Treasury Bill at 6.78% of net assets. Treasury Bill and Treasury Bill follow; the three together are 18.48%. Ten companies are 54.26% of the fund; the other 17 share the rest. Among the 192 bond funds measured here, VBIL behaves like 22.4 holdings against a median of 236.4 — 11.1 times more concentrated than the median. Across 6 quarterly filings VBIL has held roughly steady since 2025-03-31 (21.4 then, 22.4 now). Between the 2026-03-31 and 2026-06-30 filings 26 positions were added and 26 dropped; 100.0% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable bond funds on this site. Nothing here is a view on the fund.
Every filing since 2025
6Between 2025-03-31 and 2026-06-30, VBIL went from behaving like 21.4 equally weighted positions to 22.4 — 5% more, while its top ten went from 56.83% to 54.26% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 27 | 22.4 | 54.26% | 6.78% |
| 2026-03-31 | 27 | 22.3 | 54.73% | 6.38% |
| 2025-12-31 | 28 | 23.5 | 52.37% | 5.95% |
| 2025-09-30 | 27 | 22.4 | 54.86% | 6.23% |
| 2025-06-30 | 27 | 22.6 | 53.54% | 6.58% |
| 2025-03-31 | 27 | 21.4 | 56.83% | 7.96% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-06-30The 15 largest of 27 positions in VBIL's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: VBIL.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | United States Treasury Bill | 6.78% | 6.8% |
| 2 | United States Treasury Bill | 6.10% | 12.9% |
| 3 | United States Treasury Bill | 5.61% | 18.5% |
| 4 | United States Treasury Bill | 5.41% | 23.9% |
| 5 | United States Treasury Bill | 5.18% | 29.1% |
| 6 | United States Treasury Bill | 5.17% | 34.2% |
| 7 | United States Treasury Bill | 5.15% | 39.4% |
| 8 | United States Treasury Bill | 5.12% | 44.5% |
| 9 | United States Treasury Bill | 5.03% | 49.5% |
| 10 | United States Treasury Bill | 4.72% | 54.3% |
| 11 | United States Treasury Bill | 4.71% | 59.0% |
| 12 | United States Treasury Bill | 3.66% | 62.6% |
| 13 | United States Treasury Bill | 3.66% | 66.3% |
| 14 | United States Treasury Bill | 3.65% | 69.9% |
| 15 | United States Treasury Bill | 3.63% | 73.6% |
Returns the fund reported
2025-02 – 2026-06Monthly total returns from Item B.5 of VBIL's own filings, 17 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference — percentage points over 0 months, which is roughly the distributions. Every month with the filing it came from: VBIL.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-3027 positions became 27: 26 added (100.0% of the fund at the later date), 26 dropped (100.0% at the earlier date). Half the sum of all weight changes, a turnover proxy: 100.0%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of VBIL compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-03-31 | 2026-06-30 | Largest decreases | 2026-03-31 | 2026-06-30 |
|---|---|---|---|---|---|
| Vanguard Cmt Funds-Vanguard Market Liquidity Fund | 0.04% | 0.04% |
New: United States Treasury Bill (6.78%), United States Treasury Bill (6.10%), United States Treasury Bill (5.61%), United States Treasury Bill (5.41%), United States Treasury Bill (5.18%), United States Treasury Bill (5.17%). Gone: United States Treasury Bill (6.38%), United States Treasury Bill (5.71%), United States Treasury Bill (5.54%), United States Treasury Bill (5.48%), United States Treasury Bill (5.47%), United States Treasury Bill (5.32%).
Asset categories and pricing
as of 2026-06-3099.96% debt, 0.04% short-term investment as filed; 0.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Neighbours by effective holdings, debt funds
10Every measured debt fund lined up by how many holdings it behaves like; these sit either side of VBIL (22.4). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| TDTT FlexShares iBoxx 3-Year Target Duration TIPS Index Fund | 23 | 14.9 | 65.87% | 2026-07-31 |
| ZROZ PIMCO 25+ Year Zero Coupon U.S. Treasury Index Exchange-Traded Fund | 20 | 19.8 | 53.29% | 2026-06-30 |
| IBHF iShares iBonds 2026 Term High Yield and Income ETF | 117 | 20.2 | 42.17% | 2026-07-31 |
| IBDR iShares iBonds Dec 2026 Term Corporate ETF | 230 | 21.2 | 31.6% | 2026-07-31 |
| FLGV Franklin U.S. Treasury Bond ETF | 49 | 21.8 | 57.41% | 2026-06-30 |
| IBTK iShares iBonds Dec 2030 Term Treasury ETF | 27 | 22.5 | 52.83% | 2026-07-31 |
| STIP iShares 0-5 Year TIPS Bond ETF | 25 | 23 | 50.2% | 2026-07-31 |
| FTRB Federated Hermes Total Return Bond ETF | 696 | 24.5 | 47.96% | 2026-06-30 |
| AGZ iShares Agency Bond ETF | 100 | 25.5 | 50.6% | 2026-05-31 |
| ULST State Street(R) Ultra Short Term Bond ETF | 319 | 26.1 | 48.18% | 2026-06-30 |
Essays that examine VBIL
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.