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iShares Core S&P Mid-Cap ETF

iShares · Tracks S&P MidCap 400 Index · Inception May 22, 2000

Expense ratio
0.050%
5.0 bps
Net assets
$120.93B
TTM yield
1.25%
Last price
$72.37
as of Oct 23, 2026
Avg volume
8,109,982
shares/day, 30d

Trailing returns

through Oct 23, 2026
1 year
+13.6%
3 year
+17.1%
annualized
5 year
+7.0%
annualized
Growth of $1, 2021-11 to 2026-10

Price return from month-end closes, distributions reinvested at month end. Excludes trading costs, bid-ask spreads and taxes. Past performance says nothing about future returns and is not part of the composite score — see the methodology for what the score does measure.

Composite score

95 / 100
Cost 95

Based on a 0.050% expense ratio.

Liquidity 100

Based on $120.93B in net assets.

Concentration 99

Top-10 holdings represent 10.9% of net assets.

Tax efficiency 88

US Mid Cap base · ETF wrapper · 1.25% TTM yield.

The composite is a weighted average of the four core sub-scores above (cost, tax efficiency, liquidity, concentration). Missing sub-scores fall back to the per-category median when the category has at least 50% data coverage, so funds without (e.g.) parsed N-PORT holdings aren't accidentally boosted by renormalization. Tracking quality is shown where computable but isn't currently part of the composite weighting. See methodology for formulas, the tracking-quality partial-coverage rationale, and the dimensions we deliberately don't score (methodology v0.5.2).

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Top holdings

406 total holdings · as of Jun 30, 2026
# Holding Weight
1 BLACKROCK GLOBAL 3.84%
2 TWILIO INC 0.86%
3 CARPENTER TECHNOLOGY CORP 0.84%
4 MKS INC 0.83%
5 CURTISS-WRIGHT CORP 0.77%
6 NVENT ELECTRIC PLC 0.75%
7 ENTEGRIS INC 0.75%
8 ATI INC 0.74%
9 ILLUMINA INC 0.73%
10 TECHNIPFMC PLC 0.73%

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Holdings sourced from SEC Form N-PORT-P (accession 0000940400-26-034996).