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ETF comparison

IJH vs IWO

US Mid Cap vs US Small Cap.

iShares Core S&P Mid-Cap ETF · iShares Russell 2000 Growth ETF

Holdings overlap

Weighted by ISIN/CUSIP
4.4 %

40 positions appear in both funds. Buying equal dollars of IJH and IWO would leave roughly 4.4% of each dollar exposed to the same underlying securities.

IJH unmatched 95.4% Shared 4.4% IWO unmatched 95.2%

Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.

In IJH only
360 positions
Shared
40 positions
In IWO only
1,093 positions

Side by side

IJH

iShares Core S&P Mid-Cap ETF

iShares · US Mid Cap

95 composite / 100
Expense ratio
0.050%
Net assets
$120.93B
TTM yield
1.25%
Top-10 conc.
10.9%
IWO

iShares Russell 2000 Growth ETF

iShares · US Small Cap

88 composite / 100
Expense ratio
0.24%
Net assets
$14.11B
TTM yield
0.49%
Top-10 conc.
6.0%

Sub-score comparison

95
Cost
76
88
Tax efficiency
90
100
Liquidity
100
99
Concentration
100
—
Tracking quality
—
IJH sub-score IWO

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

IJH is 19 bps cheaper than IWO. On a $100,000 position that's about $190/yr more in fees for IWO.

Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with IJH vs IWO.

Top shared holdings

40 shared in total
# Holding In IJH In IWO Overlap
1 MOOG INC 0.33% 0.73% 0.33%
2 ENERSYS 0.24% 0.49% 0.24%
3 FIRSTCASH HOLDINGS INC 0.23% 0.53% 0.23%
4 HEALTHEQUITY INC 0.21% 0.46% 0.21%
5 HIMS & HERS HEALTH INC 0.20% 0.45% 0.20%
6 INTERDIGITAL INC 0.20% 0.44% 0.20%
7 LANTHEUS HOLDINGS INC 0.20% 0.43% 0.20%
8 SILICON LABORATORIES INC 0.20% 0.43% 0.20%
9 COMMVAULT SYSTEMS INC 0.16% 0.38% 0.16%
10 NOVANTA INC 0.16% 0.35% 0.16%
11 FLUOR CORP 0.20% 0.14% 0.14%
12 QUALYS INC 0.13% 0.30% 0.13%

Only in IJH

360 total
  • TWILIO INC 0.86%
  • CARPENTER TECHNOLOGY CORP 0.84%
  • MKS INC 0.83%
  • CURTISS-WRIGHT CORP 0.77%
  • NVENT ELECTRIC PLC 0.75%
  • ENTEGRIS INC 0.75%
  • ATI INC 0.74%
  • ILLUMINA INC 0.73%
  • TECHNIPFMC PLC 0.73%
  • STERLING INFRASTRUCTURE INC 0.71%

Only in IWO

1,093 total
  • BrightSpring Health Services, Inc. 0.68%
  • MaxLinear, Inc. 0.66%
  • Argan, Inc. 0.66%
  • JFrog Ltd. 0.59%
  • Krystal Biotech, Inc. 0.58%
  • ESCO Technologies, Inc. 0.56%
  • D-Wave Quantum, Inc. 0.53%
  • StoneX Group, Inc. 0.52%
  • Praxis Precision Medicines, Inc. 0.51%
  • Cipher Digital, Inc. 0.50%

Percentages are holdings overlap with the named fund.

Open IJH or IWO at a brokerage

Both funds trade commission-free at major US brokerages.

Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.

Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see /methodology/.

Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.