Fund · iShares Agency Bond ETF · measured from SEC filings
AGZ holdings
AGZ reports 100 holdings and behaves like 25.5 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: 0.45% at a quoted market price (level 1), 2 issuer countries.
What stands out
as of 2026-05-31AGZ's largest investment is Federal National Mortgage Association at 13.29% of net assets. Federal Home Loan Bank Bonds and Federal National Mortgage Association follow; the three together are 24.62%. Ten companies are 50.6% of the fund; the other 90 share the rest. Among the 192 bond funds measured here, AGZ behaves like 25.5 holdings against a median of 236.4 — 9.1 times more concentrated than the median. Across 27 quarterly filings AGZ has held roughly steady since 2019-11-30 (30.1 then, 25.5 now). Between the 2026-02-28 and 2026-05-31 filings 7 positions were added and 21 dropped; 23.7% 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, AGZ went from behaving like 30.1 equally weighted positions to 25.5 — 15% fewer, while its top ten went from 48.64% to 50.6% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-05-31 | 100 | 25.5 | 50.6% | 13.4% |
| 2026-02-28 | 114 | 36.1 | 44.22% | 7.67% |
| 2025-11-30 | 109 | 33.7 | 45.67% | 7.74% |
| 2025-08-31 | 133 | 43.9 | 37.78% | 7.73% |
| 2025-05-31 | 141 | 55.2 | 32.61% | 5.82% |
| 2025-02-28 | 138 | 43.7 | 35.82% | 8.6% |
| 2024-11-30 | 136 | 51.6 | 33.33% | 5.49% |
| 2024-08-31 | 139 | 51.7 | 33.58% | 5.46% |
Earlier filings (19 more, back to 2019-11-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-05-31 | 131 | 44.6 | 37.18% | 6.78% |
| 2024-02-29 | 128 | 47.3 | 36.37% | 6.4% |
| 2023-11-30 | 127 | 44.7 | 39.09% | 6.16% |
| 2023-08-31 | 119 | 36.6 | 44.73% | 6.26% |
| 2023-05-31 | 91 | 34.8 | 44.31% | 5.79% |
| 2023-02-28 | 75 | 30.1 | 48.47% | 6% |
| 2022-11-30 | 63 | 23.9 | 57.03% | 6.99% |
| 2022-08-31 | 55 | 18.5 | 64.03% | 11.05% |
| 2022-05-31 | 62 | 14.3 | 71.6% | 13.61% |
| 2022-02-28 | 66 | 16.4 | 66.31% | 12.48% |
| 2021-11-30 | 68 | 17 | 65.54% | 11.97% |
| 2021-08-31 | 74 | 19.4 | 59.19% | 13.65% |
| 2021-05-31 | 66 | 20.1 | 57% | 13.97% |
| 2021-02-28 | 69 | 16.9 | 61.47% | 14.66% |
| 2020-11-30 | 79 | 25.1 | 52.67% | 10.79% |
| 2020-08-31 | 88 | 23.6 | 52.88% | 12.51% |
| 2020-05-31 | 89 | 30.6 | 47.98% | 7.43% |
| 2020-02-29 | 91 | 30.7 | 48.42% | 8.47% |
| 2019-11-30 | 101 | 30.1 | 48.64% | 8.55% |
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 2026-05-31The 15 largest of 100 positions in AGZ's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: AGZ.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | Federal National Mortgage Association | 13.40% | 13.4% |
| 2 | Federal Home Loan Bank | 5.71% | 19.1% |
| 3 | Federal National Mortgage Association | 5.70% | 24.8% |
| 4 | United States of America | 5.02% | 29.8% |
| 5 | Federal Farm Credit Banks | 4.73% | 34.6% |
| 6 | Federal National Mortgage Association | 3.70% | 38.3% |
| 7 | Federal National Mortgage Association | 3.58% | 41.8% |
| 8 | Federal Home Loan Bank | 3.54% | 45.4% |
| 9 | Federal Home Loan Mortgage Corp. | 2.64% | 48.0% |
| 10 | Federal Home Loan Mortgage Corp. | 2.59% | 50.6% |
| 11 | Federal National Mortgage Association | 2.17% | 52.8% |
| 12 | Tennessee Valley Authority | 2.13% | 54.9% |
| 13 | Federal Home Loan Mortgage Corp. | 1.64% | 56.5% |
| 14 | Federal Farm Credit Banks | 1.62% | 58.2% |
| 15 | Federal National Mortgage Association | 1.60% | 59.8% |
By country of issuer
as of 2026-05-31Share of AGZ's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.
| Country | Share |
|---|---|
| United States | 99.55% |
| Israel | 0.45% |
Returns the fund reported
2019-09 – 2026-05Monthly total returns from Item B.5 of AGZ'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: AGZ.json · all funds.
Who borrows AGZ's shares
2026-05-31The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-05-31, $1m was out to 3 borrowers, 0.25% of net assets. The largest, CITIGROUP GLOBAL MARKETS INC., held 73.9% of it.
| Borrower | On loan | Share of the loan |
|---|---|---|
| CITIGROUP GLOBAL MARKETS INC. | $1m | 73.9% |
| Wells Fargo Securities LLC | $301,423 | 22.1% |
| JP MORGAN SECURITIES LLC | $54,323 | 4.0% |
Cash collateral reported against the loan: 0.25% of net assets, 101.1% 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 AGZ has filed, with each borrower: AGZ.json · all funds.
Since the previous filing
2026-02-28 → 2026-05-31114 positions became 100: 7 added (11.3% of the fund at the later date), 21 dropped (22.3% at the earlier date). Half the sum of all weight changes, a turnover proxy: 23.7%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of AGZ 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 |
|---|---|---|---|---|---|
| Federal National Mortgage Association | 7.67% | 13.40% | Federal Home Loan Bank | 0.88% | 0.37% |
| Federal National Mortgage Association | 2.37% | 3.70% | Federal Farm Credit Bank Bonds | 1.02% | 0.54% |
| Federal National Mortgage Association | 4.52% | 5.70% | Federal Home Loan Mortgage Corp. | 3.01% | 2.64% |
| Federal Home Loan Mortgage Corp. | 0.38% | 1.50% | Tennessee Valley Authority | 0.51% | 0.50% |
| Federal Home Loan Bank | 0.12% | 1.05% | Tennessee Valley Authority | 0.69% | 0.68% |
| Federal Home Loan Bank | 5.50% | 5.71% | Tennessee Valley Authority | 0.57% | 0.56% |
New: United States of America (5.02%), Federal Home Loan Bank (3.54%), Federal Farm Credit Banks (0.90%), United States of America (0.70%), Federal Farm Credit Banks (0.55%), Federal Farm Credit Banks (0.55%). Gone: United States of America (6.23%), Federal Home Loan Bank (3.50%), Federal National Mortgage Association (3.07%), Tennessee Valley Authority (2.67%), Federal Home Loan Bank (1.79%), Federal Home Loan Bank (0.77%).
Asset categories and pricing
as of 2026-05-3194.54% debt, 5.46% short-term investment as filed; 0.5% 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 AGZ (25.5). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| FLGV Franklin U.S. Treasury Bond ETF | 49 | 21.8 | 57.41% | 2026-06-30 |
| VBIL Vanguard 0-3 Month Treasury Bill ETF | 27 | 22.4 | 54.26% | 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 |
| ULST State Street(R) Ultra Short Term Bond ETF | 319 | 26.1 | 48.18% | 2026-06-30 |
| TIPX State Street(R) SPDR(R) Bloomberg 1-10 Year TIPS ETF | 33 | 29.4 | 39.01% | 2026-06-30 |
| GOVI Invesco Equal Weight 0-30 Year Treasury ETF | 31 | 30 | 33.82% | 2026-05-31 |
| IBTJ iShares iBonds Dec 2029 Term Treasury ETF | 35 | 30.7 | 40.15% | 2026-07-31 |
| TLT iShares 20+ Year Treasury Bond ETF | 47 | 31.3 | 42.23% | 2026-05-31 |
Essays that examine AGZ
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.