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ETF comparison

DFAS vs IWM

Both US Small Cap.

Dimensional U.S. Small Cap ETF · iShares Russell 2000 ETF

Holdings overlap

Weighted by ISIN/CUSIP
55.0 %

1,454 positions appear in both funds. Buying equal dollars of DFAS and IWM would leave roughly 55.0% of each dollar exposed to the same underlying securities.

DFAS only 53.6% Shared 55.0% IWM only 59.1%
In DFAS only
662 positions
Shared
1,454 positions
In IWM only
490 positions

Side by side

DFAS

Dimensional U.S. Small Cap ETF

Dimensional · US Small Cap

87 composite / 100
Expense ratio
0.26%
Net assets
$15.24B
TTM yield
0.98%
Top-10 conc.
13.6%
IWM

iShares Russell 2000 ETF

iShares · US Small Cap

88 composite / 100
Expense ratio
0.19%
Net assets
$82.97B
TTM yield
0.90%
Top-10 conc.
19.5%

Sub-score comparison

74
Cost
81
89
Tax efficiency
89
100
Liquidity
100
95
Concentration
86
—
Tracking quality
—
DFAS sub-score IWM

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

Cost difference

IWM is 7 bps cheaper than DFAS. On a $100,000 position that's about $70/yr more in fees for DFAS.

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 DFAS vs IWM.

Top shared holdings

1,454 shared in total
# Holding In DFAS In IWM Overlap
1 TTM TECHNOLOGIES, INC. 0.34% 0.34% 0.34%
2 ADVANCED ENERGY INDUSTRIES, INC. 0.29% 0.41% 0.29%
3 MODINE MANUFACTURING COMPANY 0.28% 0.39% 0.28%
4 RAMBUS INC. 0.24% 0.32% 0.24%
5 SANMINA CORPORATION 0.24% 0.24% 0.24%
6 HECLA MINING COMPANY 0.23% 0.40% 0.23%
7 VIAVI SOLUTIONS INC. 0.23% 0.26% 0.23%
8 THE ENSIGN GROUP, INC. 0.22% 0.38% 0.22%
9 FIRSTCASH HOLDINGS, INC. 0.21% 0.25% 0.21%
10 FORMFACTOR, INC. 0.21% 0.26% 0.21%
11 SPX TECHNOLOGIES, INC. 0.21% 0.33% 0.21%
12 PLANET LABS PBC 0.20% 0.26% 0.20%

Only in DFAS

662 total
  • DIMENSIONAL FUND ADVISORS LP 8.84%
  • AMKOR TECHNOLOGY, INC. 0.34%
  • WESCO INTERNATIONAL, INC. 0.29%
  • ONTO INNOVATION INC. 0.26%
  • BORGWARNER INC. 0.25%
  • JAZZ PHARMACEUTICALS PUBLIC LIMITED COMPANY 0.25%
  • APA CORPORATION 0.25%
  • PINNACLE FINANCIAL PARTNERS, INC. 0.23%
  • ELEMENT SOLUTIONS INC 0.23%
  • GENERAC HOLDINGS INC. 0.23%

Only in IWM

490 total
  • BlackRock Funds III 14.24%
  • Bloom Energy Corp. 1.01%
  • EchoStar Corp. 0.54%
  • Credo Technology Group Holding Ltd. 0.51%
  • Bridgebio Pharma, Inc. 0.40%
  • Guardant Health, Inc. 0.39%
  • IonQ, Inc. 0.34%
  • Chart Industries, Inc. 0.32%
  • Madrigal Pharmaceuticals, Inc. 0.30%
  • American Healthcare REIT, Inc. 0.29%

Open DFAS or IWM 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.