Fund · iShares 7-10 Year Treasury Bond ETF · measured from SEC filings
IEF holdings
IEF reports 16 holdings and behaves like 12.5 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-05-31. The fact sheet publishes the first number; this page computes the second, and traces it across 27 quarters of filings.
Measured concentration
as of 2026-05-31Computed 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: 1.1% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-05-31IEF's largest investment is U.S. Treasury Notes at 9.54% of net assets. U.S. Treasury Notes and U.S. Treasury Notes follow; the three together are 27.07%. Ten companies are 85.53% of the fund; the other 6 share the rest. Among the 192 bond funds measured here, IEF behaves like 12.5 holdings against a median of 236.4 — 20.0 times more concentrated than the median. Across 27 quarterly filings IEF has become less concentrated: it behaved like 9 at 2019-11-30 and 12.5 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 2 positions were added and 6 dropped; 10.0% 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 2019
27Between 2019-11-30 and 2026-05-31, IEF went from behaving like 9 equally weighted positions to 12.5 — 39% more, while its top ten went from 96.81% to 85.53% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-05-31 | 16 | 12.5 | 85.53% | 9.6% |
| 2026-02-28 | 20 | 12.7 | 84.63% | 8.9% |
| 2025-11-30 | 18 | 12.6 | 85.05% | 9.06% |
| 2025-08-31 | 16 | 12.5 | 85.46% | 10.42% |
| 2025-05-31 | 21 | 12.9 | 84.43% | 9.55% |
| 2025-02-28 | 17 | 12.5 | 84.69% | 10.03% |
| 2024-11-30 | 18 | 12.1 | 87.04% | 10.58% |
| 2024-08-31 | 20 | 12.1 | 88.29% | 11.5% |
Earlier filings (19 more, back to 2019-11-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-05-31 | 17 | 11.5 | 91.27% | 10.67% |
| 2024-02-29 | 15 | 9.8 | 94.76% | 15.05% |
| 2023-11-30 | 16 | 9 | 94.93% | 18.67% |
| 2023-08-31 | 14 | 8.4 | 95.79% | 19.1% |
| 2023-05-31 | 18 | 7.6 | 97.13% | 19.04% |
| 2023-02-28 | 18 | 7.2 | 97.2% | 18.97% |
| 2022-11-30 | 16 | 6.9 | 97.44% | 19.62% |
| 2022-08-31 | 14 | 6.8 | 98.94% | 21.42% |
| 2022-05-31 | 13 | 6.3 | 99.22% | 24.52% |
| 2022-02-28 | 13 | 5.9 | 99.9% | 24.11% |
| 2021-11-30 | 15 | 5.8 | 96.77% | 28.58% |
| 2021-08-31 | 16 | 6.8 | 99.4% | 25.4% |
| 2021-05-31 | 16 | 7 | 99.46% | 23.16% |
| 2021-02-28 | 16 | 8 | 98.46% | 19.08% |
| 2020-11-30 | 18 | 7.8 | 96.99% | 22.18% |
| 2020-08-31 | 17 | 8.5 | 98.29% | 14.27% |
| 2020-05-31 | 20 | 9.1 | 97.65% | 14.07% |
| 2020-02-29 | 16 | 9.1 | 97.23% | 14.11% |
| 2019-11-30 | 20 | 9 | 96.81% | 13.47% |
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.
Compared with, in the essays
2Overlap with other funds
2Measured against every other fund on this site, from the same filings. Combined effective holdings is how the pair behaves held in equal size.
| With | Overlap | Shared | Combined effective |
|---|---|---|---|
| IEF vs TLT | 1.06% | 1 | 35.6 |
| IEF vs SHY | 0.2% | 1 | 43.3 |
Largest positions, as filed
as of 2026-05-31The 15 largest of 16 positions in IEF's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: IEF.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | United States of America | 9.60% | 9.6% |
| 2 | United States of America | 8.84% | 18.4% |
| 3 | United States of America | 8.81% | 27.3% |
| 4 | United States of America | 8.79% | 36.1% |
| 5 | United States of America | 8.78% | 44.8% |
| 6 | United States of America | 8.69% | 53.5% |
| 7 | United States of America | 8.59% | 62.1% |
| 8 | United States of America | 8.37% | 70.5% |
| 9 | United States of America | 8.28% | 78.8% |
| 10 | United States of America | 6.77% | 85.5% |
| 11 | United States of America | 5.85% | 91.4% |
| 12 | United States of America | 5.36% | 96.7% |
| 13 | United States of America | 1.48% | 98.2% |
| 14 | BlackRock Funds III | 1.10% | 99.3% |
| 15 | United States of America | 0.38% | 99.7% |
Returns the fund reported
2019-09 – 2026-05Monthly total returns from Item B.5 of IEF's own filings, 81 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: IEF.json · all funds.
Who borrows IEF's shares
2026-02-28The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-02-28, $5m was out to 1 borrower, 0.01% of net assets.
| Borrower | On loan | Share of the loan |
|---|---|---|
| NOMURA SECURITIES INTERNATIONAL INC. | $5m | 100.0% |
Cash collateral reported against the loan: 0.01% of net assets, 97.1% of the amount lent. That is a floor on the collateral, not the whole of it — collateral the fund does not hold as a position is not in this filing, so a figure under 100% is not evidence of under-collateralisation. How that figure behaves across all funds. Every quarter IEF has filed, with each borrower: IEF.json · all funds.
Since the previous filing
2026-02-28 → 2026-05-3120 positions became 16: 2 added (1.9% of the fund at the later date), 6 dropped (1.5% at the earlier date). Half the sum of all weight changes, a turnover proxy: 10.0%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of IEF compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-02-28 | 2026-05-31 | Largest decreases | 2026-02-28 | 2026-05-31 |
|---|---|---|---|---|---|
| United States of America | 1.49% | 9.60% | United States of America | 4.61% | 0.30% |
| United States of America | 8.79% | 8.79% | United States of America | 7.29% | 5.85% |
| United States of America | 8.84% | 8.84% | United States of America | 6.43% | 5.36% |
| United States of America | 7.60% | 6.77% | |||
| United States of America | 8.90% | 8.37% | |||
| BlackRock Funds III | 1.32% | 1.10% |
New: United States of America (1.48%), United States of America (0.38%). Gone: United States of America (1.51%), United States of America (0.00%), United States of America (0.00%), United States of America (0.00%), United States of America (0.00%), United States of America (0.00%).
Asset categories and pricing
as of 2026-05-3198.90% debt, 1.10% short-term investment as filed; 1.1% 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 IEF (12.5). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| BSJQ Invesco BulletShares 2026 High Yield Corporate Bond ETF | 39 | 6.2 | 66.77% | 2026-05-31 |
| HGER Harbor Commodity All-Weather Strategy ETF | 24 | 7.1 * | 99.51% | 2026-07-31 |
| TFLO iShares Treasury Floating Rate Bond ETF | 9 | 7.8 | 100% | 2026-07-31 |
| BCI abrdn Bloomberg All Commodity Strategy K-1 Free ETF | 32 | 10.1 * | 70.2% | 2026-06-30 |
| DFIP Dimensional Inflation-Protected Securities Portfolio ETF | 21 | 12.4 | 81.87% | 2026-07-31 |
| CSHI NEOS Enhanced Income 1-3 Month T-Bill ETF | 19 | 13.2 | 78.04% | 2026-06-30 |
| TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 17 | 13.5 | 71.87% | 2026-07-31 |
| SDCI USCF SummerHaven Dynamic Commodity Strategy No K-1 Fund | 31 | 13.5 * | 73.97% | 2026-06-30 |
| LTPZ PIMCO 15+ Year U.S. TIPS Index Exchange-Traded Fund | 16 | 13.6 | 78.33% | 2026-06-30 |
| TDTT FlexShares iBoxx 3-Year Target Duration TIPS Index Fund | 23 | 14.9 | 65.87% | 2026-07-31 |
Essays that examine IEF
2-
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The "All-Weather" AI Portfolio: Combining Diversification with Predictive Power
Dalio's "all-weather" idea is sound on its merits — risk-balanced exposure across four macro environments — and is implementable today with five or six...
Mentions 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.