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iShares Russell 1000 ETF (IWB)

SEC CIK 1100663 · Series S000004347 · Portfolio as of 2026-03-31

Net assets
$42.78B
Holdings
1009
Snapshots
27
History since
2019-09-30

Top holdings

SecurityValueWeight
NVIDIA CORPORATION · NVDA$2.91B6.77%
APPLE INC. · AAPL$2.61B6.07%
MICROSOFT CORPORATION · MSFT$1.96B4.55%
AMAZON.COM, INC. · AMZN$1.43B3.31%
ALPHABET INC. · GOOGL$1.19B2.77%
BROADCOM INC. · AVGO$1.02B2.37%
ALPHABET INC. · GOOG$969.2M2.25%
META PLATFORMS, INC. · META$891.7M2.07%
TESLA, INC. · TSLA$748.8M1.74%
BERKSHIRE HATHAWAY INC. · BRK/B$630.9M1.47%

Sector exposure

technology
44.2%
financials
13.4%
healthcare
11.4%
consumer discretionary
8.9%
industrials
7.5%
energy
3.8%
utilities
3.3%
communication services
2.6%

Recent monthly returns

2025-10
+2.14%
2025-11
+0.24%
2025-12
-0.01%
2026-01
+1.37%
2026-02
-0.54%
2026-03
-4.98%

From N-PORT Part B, units verified by net-asset reconciliation.

Get this data via API

curl "https://api.fundlens.io/v1/funds/IWB/holdings" \
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Full holdings, every historical snapshot, point-in-time queries, monthly returns and flows — free tier available, no card required.

Source: SEC EDGAR Form N-PORT. Data is quarterly with a regulatory filing lag; this page shows the most recent public filing. Not investment advice.