Fund · iShares Micro-Cap ETF · measured from SEC filings
IWC holdings
IWC reports 1,382 holdings and behaves like 572.6 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 2026-06-30Read this figure with the following in mind
18.7% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 27.3
The figure below is what the filing says, published unchanged. What it may not do is sit beside a plain long-only fund and be read as the same quantity. How comparability is decided.
Computed 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: 99.99% at a quoted market price (level 1), 13 issuer countries.
What stands out
as of 2026-06-30IWC's largest investment is Ouster Inc at 0.86% of net assets. Penguin Solutions Inc and Sellas Life Sciences Group Inc follow; the three together are 2.32%. Ten companies are 5.46% of the fund; the other 1,372 share the rest. Among the 721 equity funds measured here, IWC behaves like 572.6 holdings against a median of 42.4 — 13.5 times the median. Across 28 quarterly filings IWC has become more concentrated: it behaved like 749.2 at 2019-09-30 and 572.6 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 256 positions were added and 184 dropped; 34.6% 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, IWC went from behaving like 749.2 equally weighted positions to 572.6 — 24% fewer, while its top ten went from 3.32% to 5.46% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 1,382 | 572.6 | 5.46% | 0.86% |
| 2026-03-31 | 1,310 | 354 | 10.6% | 1.73% |
| 2025-12-31 | 1,324 | 402.8 | 9.62% | 1.42% |
| 2025-09-30 | 1,344 | 491 | 7.82% | 1.16% |
| 2025-06-30 | 1,424 | 592.7 | 5.56% | 0.74% |
| 2025-03-31 | 1,436 | 575.5 | 5.55% | 0.74% |
| 2024-12-31 | 1,448 | 553.4 | 6.2% | 1.47% |
| 2024-09-30 | 1,447 | 663 | 4.09% | 0.54% |
Earlier filings (20 more, back to 2019-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 1,450 | 494.4 | 7.67% | 1.33% |
| 2024-03-31 | 1,491 | 529.8 | 7.39% | 1.15% |
| 2023-12-31 | 1,508 | 546.1 | 6.92% | 1.73% |
| 2023-09-30 | 1,533 | 635.9 | 5.63% | 1.06% |
| 2023-06-30 | 1,629 | 689.6 | 4.64% | 1.18% |
| 2023-03-31 | 1,724 | 652.8 | 5.19% | 0.9% |
| 2022-12-31 | 1,758 | 682.3 | 5.07% | 0.89% |
| 2022-09-30 | 1,786 | 769.5 | 4.22% | 0.79% |
| 2022-06-30 | 1,834 | 878.5 | 3.07% | 0.38% |
| 2022-03-31 | 1,786 | 668.5 | 4.95% | 0.79% |
| 2021-12-31 | 1,793 | 741 | 3.97% | 0.54% |
| 2021-09-30 | 1,786 | 806.2 | 4.07% | 0.64% |
| 2021-06-30 | 1,645 | 848 | 3.4% | 0.42% |
| 2021-03-31 | 1,284 | 415 | 9.23% | 2.19% |
| 2020-12-31 | 1,276 | 545 | 6.65% | 1.22% |
| 2020-09-30 | 1,271 | 563.2 | 6.95% | 1.05% |
| 2020-06-30 | 1,275 | 690.4 | 3.91% | 0.43% |
| 2020-03-31 | 1,395 | 586.8 | 5.86% | 0.96% |
| 2019-12-31 | 1,383 | 677.5 | 4.61% | 0.71% |
| 2019-09-30 | 1,405 | 749.2 | 3.32% | 0.41% |
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.
As filed, collateral included
18.69% collateralIWC's filing lists 1,383 positions including 18.69% of net assets in securities-lending cash collateral. Counted as filed the fund reads 27.3 effective holdings with a top ten of 23.76%; on its own investments — the figure above — it reads 572.6 with a top ten of 5.46%. The collateral is matched by a liability and is not a holding the fund chose; since 2026-09-18 every figure on this site sets it aside (methodology). Both numbers are in the data.
Largest positions, as filed
as of 2026-06-30The 15 largest of 1,382 positions in IWC's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: listed with the point-in-time files, available on request.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | Ouster, Inc. | 0.86% | 0.9% |
| 2 | Penguin Solutions, Inc. | 0.84% | 1.7% |
| 3 | SELLAS Life Sciences Group, Inc. | 0.61% | 2.3% |
| 4 | Innodata, Inc. | 0.53% | 2.9% |
| 5 | Nurix Therapeutics, Inc. | 0.51% | 3.4% |
| 6 | Interface, Inc. | 0.46% | 3.8% |
| 7 | FuelCell Energy, Inc. | 0.43% | 4.3% |
| 8 | Bandwidth, Inc. | 0.41% | 4.7% |
| 9 | Vishay Precision Group, Inc. | 0.40% | 5.1% |
| 10 | Butterfly Network, Inc. | 0.39% | 5.5% |
| 11 | Monte Rosa Therapeutics, Inc. | 0.39% | 5.9% |
| 12 | MBX Biosciences, Inc. | 0.38% | 6.2% |
| 13 | Arteris, Inc. | 0.37% | 6.6% |
| 14 | T1 Energy, Inc. | 0.37% | 7.0% |
| 15 | Ellington Financial, Inc. | 0.37% | 7.4% |
By country of issuer
as of 2026-06-30Share of IWC'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 | 94.69% |
| Canada | 1.46% |
| Cayman Islands° | 0.92% |
| Israel | 0.87% |
| Bermuda° | 0.85% |
| Marshall Islands° | 0.40% |
| United Kingdom | 0.19% |
| British Virgin Islands° | 0.18% |
Returns the fund reported
2019-07 – 2026-06Monthly total returns from Item B.5 of IWC'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 0.16 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: IWC.json · all funds.
Who borrows IWC's shares
2026-06-30The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-06-30, $288m was out to 27 borrowers, 18.95% of net assets. The largest, JP MORGAN SECURITIES LLC, held 28.8% of it.
| Borrower | On loan | Share of the loan |
|---|---|---|
| JP MORGAN SECURITIES LLC | $83m | 28.8% |
| BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED | $36m | 12.4% |
| GOLDMAN SACHS INTERNATIONAL | $33m | 11.4% |
| MORGAN STANLEY & CO LLC | $29m | 10.1% |
| BofA Securities, Inc. | $27m | 9.3% |
Cash collateral reported against the loan: 18.69% of net assets, 98.6% 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 IWC has filed, with each borrower: IWC.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-301,302 positions became 1,374: 256 added (8.7% of the fund at the later date), 184 dropped (33.2% at the earlier date). Half the sum of all weight changes, a turnover proxy: 34.6%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of IWC 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 |
|---|---|---|---|---|---|
| Penguin Solutions, Inc. | 0.19% | 0.84% | Compass Therapeutics, Inc. | 0.14% | 0.06% |
| Ouster, Inc. | 0.22% | 0.86% | ADC Therapeutics SA | 0.08% | 0.03% |
| SELLAS Life Sciences Group, Inc. | 0.15% | 0.61% | Gevo, Inc. | 0.13% | 0.08% |
| FuelCell Energy, Inc. | 0.07% | 0.43% | Fulcrum Therapeutics, Inc. | 0.10% | 0.05% |
| Bandwidth, Inc. | 0.10% | 0.41% | Rayonier Advanced Materials, Inc. | 0.15% | 0.11% |
| Vishay Precision Group, Inc. | 0.11% | 0.40% | Bristow Group, Inc. | 0.28% | 0.24% |
New: Hyperliquid Strategies, Inc. (0.22%), Realloys, Inc. (0.18%), Canadian Solar, Inc. (0.17%), Vor BioPharma, Inc. (0.15%), CytomX Therapeutics, Inc. (0.15%), Relmada Therapeutics, Inc. (0.14%). Gone: Praxis Precision Medicines, Inc. (1.73%), Applied Digital Corp. (1.17%), Applied Optoelectronics, Inc. (1.16%), Cogent Biosciences, Inc. (1.14%), Terns Pharmaceuticals, Inc. (1.05%), Terawulf, Inc. (0.93%).
Asset categories and pricing
as of 2026-06-3084.10% equity, 15.89% short-term investment as filed; 100.0% carried at a quoted market price (fair-value level 1), 0.0% at level 3. 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 $1.52B. 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 IWC (572.6). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| VTWO Vanguard Russell 2000 Index Fund | 1,954 | 513.7 | 7.78% | 2026-05-31 |
| IWN iShares Russell 2000 Value ETF | 1,425 | 519.9 | 5.53% | 2026-06-30 |
| TLTD FlexShares Morningstar Developed Markets ex-US Factor Tilt Index Fund | 2,279 | 531.2 | 7.53% | 2026-07-31 |
| ISCF iShares International Small-Cap Equity Factor ETF | 1,180 | 557.1 | 5.69% | 2026-07-31 |
| EQAL Invesco Russell 1000 Equal Weight ETF | 988 | 566.4 | 6.53% | 2026-05-31 |
| VXF Vanguard Extended Market Index Fund | 3,371 | 582.2 | 7.55% | 2026-06-30 |
| DLS WisdomTree International SmallCap Dividend Fund | 1,021 | 582.8 | 5.72% | 2026-06-30 |
| BBSC JPMorgan BetaBuilders U.S. Small Cap Equity ETF | 853 | 601.1 | 4.59% | 2026-07-31 |
| GSSC Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF | 1,320 | 610.4 | 6.56% | 2026-05-31 |
| DFIC Dimensional International Core Equity 2 ETF | 4,128 | 640.4 | 6.91% | 2026-07-31 |
Essays that examine IWC
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.