ETF comparison
IWMvsIWN
Both US Small Cap.
Holdings overlap
1,421 positions appear in both funds. Buying equal dollars of IWM and IWN would leave roughly58.7%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
IWM is 5 bps cheaper than IWN. On a $100,000 position that's about $50/yr more in fees for IWN.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open thecost calculator pre-filled with IWM vs IWN.
Top shared holdings
1,421 shared in total| # | Holding | In IWM | In IWN | Overlap |
|---|---|---|---|---|
| 1 | BlackRock Funds III | 17.02% | 5.05% | 5.05% |
| 2 | Hut 8 Corp. | 0.37% | 0.36% | 0.36% |
| 3 | Viasat, Inc. | 0.35% | 0.74% | 0.35% |
| 4 | Cytokinetics, Inc. | 0.35% | 0.65% | 0.35% |
| 5 | UMB Financial Corp. | 0.33% | 0.62% | 0.33% |
| 6 | CareTrust REIT, Inc. | 0.28% | 0.59% | 0.28% |
| 7 | Old National Bancorp | 0.28% | 0.52% | 0.28% |
| 8 | Terex Corp. | 0.26% | 0.54% | 0.26% |
| 9 | JBT Marel Corp. | 0.24% | 0.50% | 0.24% |
| 10 | Fluor Corp. | 0.23% | 0.34% | 0.23% |
| 11 | Lumen Technologies, Inc. | 0.23% | 0.48% | 0.23% |
| 12 | Arcosa, Inc. | 0.22% | 0.32% | 0.22% |
Only in IWM
594 total- Moog, Inc.0.38%
- BrightSpring Health Services, Inc.0.35%
- MaxLinear, Inc.0.34%
- Argan, Inc.0.34%
- JFrog Ltd.0.31%
- Krystal Biotech, Inc.0.30%
- ESCO Technologies, Inc.0.29%
- FirstCash Holdings, Inc.0.28%
- D-Wave Quantum, Inc.0.27%
- StoneX Group, Inc.0.27%
Only in IWN
3 total- BlackRock Funds III0.14%
- N/A0.00%
- GD Culture Group Ltd.0.00%
Open IWM or IWN 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 methodologyand 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.