Fund · iShares S&P 100 ETF · measured from SEC filings
OEF holdings
OEF reports 104 holdings and behaves like 27 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 28 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: 100% at a quoted market price (level 1), 2 issuer countries.
What stands out
as of 2026-06-30OEF's largest investment is Nvidia Corp at 10.47% of net assets. Apple Inc and Microsoft Corp follow; the three together are 25.64%. Ten companies are 50.74% of the fund; the other 94 share the rest. Among the 721 equity funds measured here, OEF behaves like 27 holdings against a median of 42.4 — 1.6 times more concentrated than the median. Across 28 quarterly filings OEF has become more concentrated: it behaved like 47.7 at 2019-09-30 and 27 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 3 positions were added and 1 dropped; 7.7% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.
Every filing since 2019
28Between 2019-09-30 and 2026-06-30, OEF went from behaving like 47.7 equally weighted positions to 27 — 43% fewer, while its top ten went from 34.06% to 50.74% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 104 | 27 | 50.74% | 10.47% |
| 2026-03-31 | 102 | 27.1 | 50.56% | 10.5% |
| 2025-12-31 | 102 | 24.4 | 54.16% | 10.71% |
| 2025-09-30 | 103 | 23.9 | 53.86% | 11.06% |
| 2025-06-30 | 103 | 25.4 | 51.4% | 10.3% |
| 2025-03-31 | 103 | 28.4 | 47.89% | 10.01% |
| 2024-12-31 | 102 | 24.4 | 52.93% | 10.77% |
| 2024-09-30 | 103 | 25.6 | 50.01% | 10.5% |
Earlier filings (20 more, back to 2019-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 103 | 24.8 | 51.3% | 10.39% |
| 2024-03-31 | 103 | 28.7 | 47.19% | 10.41% |
| 2023-12-31 | 103 | 28.8 | 45.67% | 10.4% |
| 2023-09-30 | 102 | 30.3 | 44.95% | 10.28% |
| 2023-06-30 | 103 | 28.2 | 45.1% | 11.41% |
| 2023-03-31 | 103 | 31.7 | 41.24% | 10.76% |
| 2022-12-30 | 102 | 37.3 | 37.56% | 9.31% |
| 2022-09-30 | 102 | 32.5 | 42.04% | 10.49% |
| 2022-06-30 | 102 | 33.6 | 40.69% | 9.95% |
| 2022-03-31 | 103 | 31.1 | 43.92% | 10.54% |
| 2021-12-31 | 103 | 31.2 | 43.84% | 10.25% |
| 2021-09-30 | 102 | 34.3 | 42.07% | 9.1% |
| 2021-06-30 | 103 | 35.3 | 41.05% | 8.85% |
| 2021-03-31 | 103 | 37.1 | 39.72% | 8.65% |
| 2020-12-31 | 103 | 33.1 | 41.27% | 10.09% |
| 2020-09-30 | 103 | 31.6 | 41.84% | 10% |
| 2020-06-30 | 103 | 33.8 | 40.56% | 9.06% |
| 2020-03-31 | 103 | 38.3 | 38.49% | 8.52% |
| 2019-12-31 | 103 | 44.6 | 35.49% | 7.16% |
| 2019-09-30 | 103 | 47.7 | 34.06% | 6.78% |
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 104 positions in OEF's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: OEF.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | NVIDIA CORP | 10.47% | 10.5% |
| 2 | APPLE INC | 9.18% | 19.7% |
| 3 | MICROSOFT CORP | 5.99% | 25.6% |
| 4 | AMAZON.COM INC | 5.04% | 30.7% |
| 5 | ALPHABET INC | 4.53% | 35.2% |
| 6 | BROADCOM INC | 3.87% | 39.1% |
| 7 | ALPHABET INC | 3.61% | 42.7% |
| 8 | MICRON TECHNOLOGY INC | 2.81% | 45.5% |
| 9 | META PLATFORMS INC | 2.67% | 48.2% |
| 10 | TESLA INC | 2.56% | 50.7% |
| 11 | ELI LILLY & COMPANY | 2.05% | 52.8% |
| 12 | ADVANCED MICRO DEVICES INC | 2.05% | 54.8% |
| 13 | BERKSHIRE HATHAWAY INC | 1.98% | 56.8% |
| 14 | JP MORGAN CHASE & COMPANY | 1.90% | 58.7% |
| 15 | INTEL CORP | 1.43% | 60.1% |
By country of issuer
as of 2026-06-30Share of OEF'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 | 99.10% |
| Ireland° | 0.90% |
Returns the fund reported
2019-07 – 2026-06Monthly total returns from Item B.5 of OEF's own filings, 84 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference 0.07 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: OEF.json · all funds.
Who borrows OEF's shares
2025-12-31The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2025-12-31, $88m was out to 1 borrower, 0.30% of net assets.
| Borrower | On loan | Share of the loan |
|---|---|---|
| HSBC BANK PLC | $88m | 100.0% |
Cash collateral reported against the loan: 0.31% of net assets, 103.1% 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 OEF has filed, with each borrower: OEF.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-30102 positions became 104: 3 added (0.1% of the fund at the later date), 1 dropped (0.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 7.7%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of OEF 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 |
|---|---|---|---|---|---|
| MICRON TECHNOLOGY INC | 0.94% | 2.81% | MICROSOFT CORP | 6.81% | 5.99% |
| ADVANCED MICRO DEVICES INC | 0.82% | 2.05% | EXXONMOBIL HOLDINGS CORP | 1.76% | 1.22% |
| INTEL CORP | 0.51% | 1.43% | META PLATFORMS INC | 3.10% | 2.67% |
| APPLIED MATERIALS INC | 0.67% | 1.24% | NETFLIX INC | 1.01% | 0.65% |
| LAM RESEARCH CORP | 0.66% | 1.17% | CHEVRON CORP | 0.96% | 0.67% |
| ALPHABET INC | 4.15% | 4.53% | WALMART INC | 1.35% | 1.07% |
New: HONEYWELL AEROSPACE INC (0.15%), HONEYWELL INTERNATIONAL INC (0.00%), CHICAGO MERCANTILE EXCHANGE (0.00%). Gone: Honeywell International Inc. (0.36%).
Asset categories and pricing
as of 2026-06-3099.93% equity, 0.07% short-term investment as filed; 100.0% 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.
Derivative exposure and counterparties
as of 2026-06-30A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $20.04B. Notional of an interest-rate or currency swap is not equity exposure.
Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).
Neighbours by effective holdings, equity funds
10Every measured equity fund lined up by how many holdings it behaves like; these sit either side of OEF (27). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| RWR State Street(R) SPDR(R) Dow Jones(R) REIT ETF | 102 | 26.6 | 51.64% | 2026-06-30 |
| GQGU GQG US Equity ETF | 34 | 26.6 | 49.85% | 2026-06-30 |
| TDIV First Trust NASDAQ Technology Dividend Index Fund | 95 | 26.9 | 51.68% | 2026-06-30 |
| PIEQ Principal International Equity ETF | 36 | 26.9 | 47.14% | 2026-06-30 |
| CHPY YieldMax(R) Semiconductor Portfolio Option Income ETF | 56 | 26.9 | 46.87% | 2026-07-31 |
| LABU Direxion Daily S&P Biotech Bull 3X Shares | 155 | 27.3 * | 43.68% | 2026-07-31 |
| SSO ProShares Ultra S&P500 | 524 | 27.5 * | 42.3% | 2026-05-31 |
| EIS iShares MSCI Israel ETF | 119 | 27.5 | 51.76% | 2026-05-31 |
| FLUK Franklin FTSE United Kingdom ETF | 95 | 27.5 | 49.53% | 2026-06-30 |
| VSLU Applied Finance Valuation Large Cap ETF | 457 | 27.6 | 50.39% | 2026-06-30 |
Essays that examine OEF
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.