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ETF comparison

IWM vs OEF

US Small Cap vs US Large Cap.

iShares Russell 2000 ETF · iShares S&P 100 ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

0 positions appear in both funds. Buying equal dollars of IWM and OEF would leave roughly 0.0% of each dollar exposed to the same underlying securities.

IWM unmatched 99.8% Shared 0.0% OEF unmatched 99.9%

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 IWM only
2,014 positions
Shared
0 positions
In OEF only
102 positions

Side by side

IWM

iShares Russell 2000 ETF

iShares · US Small Cap

90 composite / 100
Expense ratio
0.19%
Net assets
$78.04B
TTM yield
0.99%
Top-10 conc.
3.4%
OEF

iShares S&P 100 ETF

iShares · US Large Cap

81 composite / 100
Expense ratio
0.20%
Net assets
$20.43B
TTM yield
0.86%
Top-10 conc.
50.7%

Sub-score comparison

81
Cost
80
89
Tax efficiency
89
100
Liquidity
100
100
Concentration
42
—
Tracking quality
—
IWM sub-score OEF

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

Cost difference

IWM is 1 bps cheaper than OEF. On a $100,000 position that's about $10/yr more in fees for OEF.

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 IWM vs OEF.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in IWM

2,014 total
  • Moog, Inc. 0.38%
  • Hut 8 Corp. 0.37%
  • Viasat, Inc. 0.35%
  • BrightSpring Health Services, Inc. 0.35%
  • Cytokinetics, Inc. 0.35%
  • MaxLinear, Inc. 0.34%
  • Argan, Inc. 0.34%
  • UMB Financial Corp. 0.33%
  • JFrog Ltd. 0.31%
  • Riot Platforms, Inc. 0.30%

Only in OEF

102 total
  • NVIDIA CORP 10.47%
  • APPLE INC 9.18%
  • MICROSOFT CORP 5.99%
  • AMAZON.COM INC 5.04%
  • ALPHABET INC 4.53%
  • BROADCOM INC 3.86%
  • ALPHABET INC 3.61%
  • MICRON TECHNOLOGY INC 2.81%
  • META PLATFORMS INC 2.67%
  • TESLA INC 2.56%

Related comparisons

More comparisons with IWM

More comparisons with OEF

Percentages are holdings overlap with the named fund.

Open IWM or OEF at a brokerage

Both funds trade commission-free at major US brokerages.

Open at Fidelity

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.