iShares Russell 2000 ETF
The main way institutions take a position in US small caps, and the reference vehicle for the Russell 2000 — the index the market watches for whether a rally has breadth beyond the megacaps.
- Listing
- IWM on NYSE Arca MIC ARCX
- Type
- ETF
- Manager
- BlackRock
- Strategy
- Passive — tracks the Russell 2000 small-cap index
- Domicile
- United States
- Size
- $71.9bn — net assets of the whole series, all share classes, as reported at 2026-03-31
Fund identity
iShares Russell 2000 ETFSEC series S000004344 · iSHARES TRUST
A single share class (SEC class C000012074).
Series and class identifiers and their names come from the SEC’s Investment Company Series and Class report — the registry that assigns them, not our own naming. This fund tracks Russell 2000, which is a covered asset here.
Where the size figure comes from
| Reported | $71.9bn |
| What it counts | net assets of the whole series, all share classes |
| As of | 2026-03-31 |
| Source | SEC N-PORT data set |
| Fund LEI | 549300O80OAR5VTWR172 |
Our earlier undated figure was $71.9bn; this one carries the reporting date above and moves only when the fund files again.
Approximate reference values from public sources · seed-0.7 · marketcap-1 · 2026-08-30 · not real-time. See data & methodology.
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