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iShares Russell 2000 ETF (IWM)

IWM tracks the Russell 2000, a broad basket of about 2,000 US small-cap companies. No single stock dominates, so the names below are representative rather than a stable leaderboard — the top holdings reorder frequently.

Tracks
the Russell 2000 small-cap Index
Holdings
~2,000
Weighting
Market-cap weighted
Tilt
Small-cap

Top 10 holdings

as of July 2026
1 Moog Inc. (Class A) MOG.A
2 BrightSpring Health Services, Inc. BTSG
3 Cytokinetics, Incorporated CYTK
4 Hut 8 Corp. HUT
5 UMB Financial Corporation UMBF
6 Viasat, Inc. VSAT
7 Argan, Inc. AGX
8 JFrog Ltd. FROG
9 MaxLinear, Inc. MXL
10 Krystal Biotech, Inc. KRYS

Holdings shift over time; this is a periodic snapshot (membership only, no weights). Source: stockanalysis.com.

Recent insider purchase activity in IWM's top holdings

1 of the 10 top holdings shown above had one or more open-market purchases in Tradune’s trailing-90-day Form 4 score window. This is a view of the displayed top holdings only, not the fund or index’s full membership.

UMBFUMB Financial Corporation
2 buyers2 open-market purchases-$5,424,588 netlatest Sep 1, 2026

Net value is open-market purchases less sales, shown only when every transaction value in the window was disclosed. Form 4 activity is descriptive, not predictive or investment advice. How the score is computed →

How to think about IWM

An index fund like IWM gives you one-ticket exposure to a basket (~2,000 holdings) rather than a single company, so your outcome depends on the group, not one name. Because it’s market-cap weighted, the largest holdings above drive most of its moves — worth knowing if you already own those names directly, since you may be more concentrated than you think.

Related funds & indexes

Educational overview of fund membership — not investment advice, and not a recommendation to buy or sell IWM or any holding. Holdings are a periodic snapshot and change over time.