ETF comparison
IWN vs SPSM
Both US Small Cap.
iShares Russell 2000 Value ETF · State Street SPDR Portfolio S&P 600 Small Cap ETF
Holdings overlap
393 positions appear in both funds. Buying equal dollars of IWN and SPSM would leave roughly 43.8% of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
SPSM is 21 bps cheaper than IWN. On a $100,000 position that's about $210/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 the cost calculator pre-filled with IWN vs SPSM.
Top shared holdings
393 shared in total| # | Holding | In IWN | In SPSM | Overlap |
|---|---|---|---|---|
| 1 | Jackson Financial, Inc. | 0.50% | 0.49% | 0.49% |
| 2 | SM Energy Co. | 0.54% | 0.46% | 0.46% |
| 3 | Terreno Realty Corp. | 0.43% | 0.42% | 0.42% |
| 4 | Essential Properties Realty Trust, Inc. | 0.42% | 0.42% | 0.42% |
| 5 | Noble Corp. plc | 0.43% | 0.40% | 0.40% |
| 6 | Viasat, Inc. | 0.39% | 0.41% | 0.39% |
| 7 | California Resources Corp. | 0.35% | 0.36% | 0.35% |
| 8 | Matson, Inc. | 0.35% | 0.34% | 0.34% |
| 9 | Atlantic Union Bankshares Corp. | 0.35% | 0.33% | 0.33% |
| 10 | Ameris Bancorp | 0.35% | 0.33% | 0.33% |
| 11 | Warrior Met Coal, Inc. | 0.33% | 0.32% | 0.32% |
| 12 | Enpro, Inc. | 0.32% | 0.34% | 0.32% |
Only in IWN
1,016 total- BlackRock Funds III 8.04%
- EchoStar Corp. 1.09%
- TTM Technologies, Inc. 0.69%
- Coeur Mining, Inc. 0.66%
- Hecla Mining Co. 0.62%
- Praxis Precision Medicines, Inc. 0.53%
- Fluor Corp. 0.52%
- UMB Financial Corp. 0.52%
- CareTrust REIT, Inc. 0.51%
- Vaxcyte, Inc. 0.50%
Only in SPSM
212 total- Eastman Chemical Co 0.57%
- Element Solutions Inc 0.51%
- Viavi Solutions Inc 0.50%
- Argan Inc 0.49%
- LKQ Corp 0.49%
- ESCO Technologies Inc 0.48%
- Match Group Inc 0.47%
- Celanese Corp 0.47%
- Semtech Corp 0.47%
- Armstrong World Industries Inc 0.46%
Open IWN or SPSM 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.