ETF comparison
IWM vs VIOV
Both US Small Cap.
iShares Russell 2000 ETF · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares
Holdings overlap
416 positions appear in both funds. Buying equal dollars of IWM and VIOV would leave roughly 31.2% of each dollar exposed to the same underlying securities.
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.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
VIOV is 9 bps cheaper than IWM. On a $100,000 position that's about $90/yr more in fees for IWM.
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 VIOV.
Top shared holdings
416 shared in total| # | Holding | In IWM | In VIOV | Overlap |
|---|---|---|---|---|
| 1 | MaxLinear, Inc. | 0.34% | 0.50% | 0.34% |
| 2 | Plexus Corp. | 0.25% | 0.47% | 0.25% |
| 3 | Lumen Technologies, Inc. | 0.23% | 0.66% | 0.23% |
| 4 | Arcosa, Inc. | 0.22% | 0.26% | 0.22% |
| 5 | Macerich Co. (The) | 0.22% | 0.35% | 0.22% |
| 6 | Kulicke & Soffa Industries, Inc. | 0.21% | 0.62% | 0.21% |
| 7 | Terreno Realty Corp. | 0.21% | 0.24% | 0.21% |
| 8 | Glaukos Corp. | 0.25% | 0.21% | 0.21% |
| 9 | Vishay Intertechnology, Inc. | 0.21% | 0.75% | 0.21% |
| 10 | Essential Properties Realty Trust, Inc. | 0.20% | 0.25% | 0.20% |
| 11 | Ultra Clean Holdings, Inc. | 0.20% | 0.45% | 0.20% |
| 12 | SM Energy Co. | 0.20% | 0.81% | 0.20% |
Only in IWM
1,598 total- Moog, Inc. 0.38%
- Hut 8 Corp. 0.37%
- Viasat, Inc. 0.35%
- BrightSpring Health Services, Inc. 0.35%
- Cytokinetics, Inc. 0.35%
- Argan, Inc. 0.34%
- UMB Financial Corp. 0.33%
- JFrog Ltd. 0.31%
- Riot Platforms, Inc. 0.30%
- Krystal Biotech, Inc. 0.30%
Only in VIOV
44 total- Enphase Energy Inc 1.04%
- Molina Healthcare Inc 1.04%
- Eastman Chemical Co 1.01%
- Match Group Inc 0.99%
- LKQ Corp 0.81%
- Paycom Software Inc 0.80%
- CarMax Inc 0.74%
- Versant Media Group Inc 0.73%
- Lamb Weston Holdings Inc 0.70%
- Lincoln National Corp 0.70%
Related comparisons
More comparisons with IWM
- IWM vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 30.7%
- IWM vs IJT · iShares S&P Small-Cap 600 Growth ETF 30.1%
- IWM vs DFSV · DFA U.S. Small Cap Value Portfolio – ETF Class Shares 28.9%
- IWM vs AVUV · Avantis US Small Cap Value ETF 28.0%
- IWM vs VBR · Vanguard Morningstar Small-Cap Value ETF 25.8%
- IWM vs VB · Vanguard Morningstar Small-Cap ETF 25.5%
More comparisons with VIOV
- VIOV vs FNDA · Schwab Fundamental U.S. Small Company ETF 31.1%
- VIOV vs AVUV · Avantis US Small Cap Value ETF 30.7%
- VIOV vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 28.1%
- VIOV vs VTWO · Vanguard Russell 2000 Index Fund ETF Shares 27.3%
- VIOV vs DFAT · U.S. Targeted Value Portfolio-ETF Class Shares 26.1%
- VIOV vs IJT · iShares S&P Small-Cap 600 Growth ETF 25.8%
Percentages are holdings overlap with the named fund.
Open IWM or VIOV 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.