257 essays 1,087 funds measured independent · not paid by any fund or issuer we cover

Fund · iShares Russell 2000 ETF · measured from SEC filings

IWM holdings

IWM reports 2,016 holdings and behaves like 840.2 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 2026-06-30

Read this figure with the following in mind

17.0% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 33.2

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.

2,016 Positions reported
840.2 Effective holdings
2.4× Concentration multiple
3.42% Top ten weight

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: 100% at a quoted market price (level 1), 20 issuer countries.

What stands out

as of 2026-06-30

IWM's largest investment is Moog Inc at 0.38% of net assets. Hut 8 Corp and Viasat Inc follow; the three together are 1.1%. Ten companies are 3.42% of the fund; the other 2,006 share the rest. Among the 721 equity funds measured here, IWM behaves like 840.2 holdings against a median of 42.4 — 19.8 times the median. Across 28 quarterly filings IWM has held roughly steady since 2019-09-30 (937.3 then, 840.2 now). Between the 2026-03-31 and 2026-06-30 filings 246 positions were added and 175 dropped; 20.9% 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

28

Between 2019-09-30 and 2026-06-30, IWM went from behaving like 937.3 equally weighted positions to 840.2 — 10% fewer, while its top ten went from 2.82% to 3.42% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-06-30 2,016 840.2 3.42% 0.38%
2026-03-31 1,945 666 5.62% 1.01%
2025-12-31 1,962 717.2 5.14% 0.76%
2025-09-30 1,980 728.4 5% 0.76%
2025-06-30 2,124 816.3 3.7% 0.53%
2025-03-31 1,958 764.2 4.15% 0.64%
2024-12-31 1,973 819.1 3.84% 0.55%
2024-09-30 1,985 835.3 3.71% 0.51%
Earlier filings (20 more, back to 2019-09-30)
PeriodHoldingsEffectiveTop 10Largest
2024-06-30 1,930 637 5.81% 1.63%
2024-03-31 1,955 622.8 5.65% 1.92%
2023-12-31 1,974 865.2 3.27% 0.52%
2023-09-30 1,995 843.9 3.73% 0.77%
2023-06-30 2,017 927 2.93% 0.48%
2023-03-31 1,929 885.2 3.07% 0.33%
2022-12-31 1,956 921.4 2.93% 0.33%
2022-09-30 1,975 945 3.14% 0.45%
2022-06-30 1,997 985.5 2.71% 0.4%
2022-03-31 2,023 892.8 3.63% 0.52%
2021-12-31 2,039 935.6 3.3% 0.47%
2021-09-30 2,037 978 3.2% 0.67%
2021-06-30 2,002 990.2 3.12% 0.76%
2021-03-31 2,061 863.8 4.21% 0.58%
2020-12-31 2,048 843.4 4.06% 0.54%
2020-09-30 2,028 844.8 3.88% 0.58%
2020-06-30 2,013 898.7 3.19% 0.68%
2020-03-31 1,983 774.2 4.04% 0.77%
2019-12-31 2,001 932.9 2.83% 0.35%
2019-09-30 2,007 937.3 2.82% 0.33%

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

2

Overlap with other funds

2

Measured against every other fund on this site, from the same filings. Combined effective holdings is how the pair behaves held in equal size.

WithOverlapSharedCombined effective
IWM vs IJR 46.9% 540 660.1
IWM vs VB 24.63% 662 1188.2

As filed, collateral included

17.02% collateral

IWM's filing lists 2,017 positions including 17.02% of net assets in securities-lending cash collateral. Counted as filed the fund reads 33.2 effective holdings with a top ten of 20.14%; on its own investments — the figure above — it reads 840.2 with a top ten of 3.42%. 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 2026-06-30

The 15 largest of 2,016 positions in IWM'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.

#PositionWeightCumulative
1Moog, Inc.0.38%0.4%
2Hut 8 Corp.0.37%0.7%
3Viasat, Inc.0.35%1.1%
4BrightSpring Health Services, Inc.0.35%1.5%
5Cytokinetics, Inc.0.35%1.8%
6MaxLinear, Inc.0.34%2.1%
7Argan, Inc.0.34%2.5%
8UMB Financial Corp.0.33%2.8%
9JFrog Ltd.0.31%3.1%
10Riot Platforms, Inc.0.30%3.4%
11Krystal Biotech, Inc.0.30%3.7%
12ESCO Technologies, Inc.0.29%4.0%
13CareTrust REIT, Inc.0.28%4.3%
14Old National Bancorp0.28%4.6%
15FirstCash Holdings, Inc.0.28%4.9%

By country of issuer

as of 2026-06-30

Share of IWM's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.

CountryShare
United States 92.66%
Canada 1.64%
Bermuda° 1.34%
Cayman Islands° 0.85%
United Kingdom 0.58%
Ireland° 0.47%
Israel 0.43%
Marshall Islands° 0.42%

Returns the fund reported

2019-07 – 2026-06

Monthly total returns from Item B.5 of IWM's own filings, 84 months on record. Not computed here and not from a price feed.

40.6%Last twelve months filed
110%Whole series, compounded
18.4%Best month
-21.7%Worst month

Cross-checked against a series computed separately from prices: median difference 0.08 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: IWM.json · all funds.

Who borrows IWM's shares

2026-06-30

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-06-30, $13.3bn was out to 30 borrowers, 16.03% of net assets. The largest, JP MORGAN SECURITIES LLC, held 82.3% of it.

BorrowerOn loanShare of the loan
JP MORGAN SECURITIES LLC $10.9bn 82.3%
BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED $404m 3.0%
MORGAN STANLEY & CO LLC $382m 2.9%
BofA Securities, Inc. $270m 2.0%
GOLDMAN SACHS & CO. $199m 1.5%

Cash collateral reported against the loan: 17.02% of net assets, 106.2% 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 IWM has filed, with each borrower: IWM.json · all funds.

Since the previous filing

2026-03-31 → 2026-06-30

1,938 positions became 2,009: 246 added (5.7% of the fund at the later date), 175 dropped (16.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 20.9%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of IWM compared this way, as a feed: changes.xml · all funds: filings received.

Largest increases2026-03-312026-06-30Largest decreases2026-03-312026-06-30
MaxLinear, Inc.0.05%0.34% Valaris Ltd.0.21%0.13%
Hut 8 Corp.0.16%0.37% SM Energy Co.0.27%0.20%
BrightSpring Health Services, Inc.0.19%0.35% Noble Corp. plc0.21%0.15%
Viasat, Inc.0.19%0.35% Transocean Ltd.0.21%0.15%
Riot Platforms, Inc.0.15%0.30% Verra Mobility Corp.0.08%0.02%
ACM Research, Inc.0.07%0.21% Sable Offshore Corp.0.07%0.01%

New: JFrog Ltd. (0.31%), AXT, Inc. (0.14%), ServiceTitan, Inc. (0.14%), Opendoor Technologies, Inc. (0.13%), Ondas, Inc. (0.12%), Hinge Health, Inc. (0.11%). Gone: Bloom Energy Corp. (1.01%), Coeur Mining, Inc. (0.65%), Fabrinet (0.64%), Nextpower, Inc. (0.60%), EchoStar Corp. (0.54%), Credo Technology Group Holding Ltd. (0.52%).

Asset categories and pricing

as of 2026-06-30

85.42% equity, 14.57% 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 2026-06-30

A 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 $82.97B. Notional of an interest-rate or currency swap is not equity exposure.

99.79%Stocks held directly
0%Swap notional (0)
0.12%Futures notional (1)
99.9%Sum, % of net assets

Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).

Neighbours by effective holdings, equity funds

10

Every measured equity fund lined up by how many holdings it behaves like; these sit either side of IWM (840.2). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
DFIC Dimensional International Core Equity 2 ETF 4,128 640.4 6.91% 2026-07-31
DFAX Dimensional World ex. U.S. Core Equity 2 ETF 10,509 668.2 8.24% 2026-07-31
VB Vanguard Small-Cap Index Fund 1,316 689.3 4.33% 2026-06-30
PRFZ Invesco RAFI US 1500 Small-Mid ETF 1,500 718.3 3.81% 2026-07-31
RSSL Global X Russell 2000 ETF 1,961 836.2 3.31% 2026-07-31
DFAS Dimensional U.S. Small Cap ETF 2,055 896.9 2.54% 2026-07-31
WSML iShares MSCI World Small-Cap ETF 3,520 929.3 4.51% 2026-05-31
DFIS Dimensional International Small Cap ETF 3,513 951.3 3.6% 2026-07-31
FNDC Schwab Fundamental International Small Equity ETF 1,582 971 3.66% 2026-05-31
SCZ iShares MSCI EAFE Small-Cap ETF 2,073 1093 2.7% 2026-07-31

On video

1

The same filings read aloud in under a minute. Links open YouTube; nothing from it loads on this page.

Essays that examine IWM

3

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.