ETF comparison
IWM vs VIOG
Both US Small Cap.
iShares Russell 2000 ETF · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares
Holdings overlap
316 positions appear in both funds. Buying equal dollars of IWM and VIOG would leave roughly 31.4% 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
VIOG 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 VIOG.
Top shared holdings
316 shared in total| # | Holding | In IWM | In VIOG | Overlap |
|---|---|---|---|---|
| 1 | Viasat, Inc. | 0.35% | 1.05% | 0.35% |
| 2 | Argan, Inc. | 0.34% | 0.68% | 0.34% |
| 3 | ESCO Technologies, Inc. | 0.29% | 0.82% | 0.29% |
| 4 | Alkermes plc | 0.27% | 0.90% | 0.27% |
| 5 | StoneX Group, Inc. | 0.27% | 0.83% | 0.27% |
| 6 | Plexus Corp. | 0.25% | 0.32% | 0.25% |
| 7 | Enpro, Inc. | 0.25% | 0.72% | 0.25% |
| 8 | MaxLinear, Inc. | 0.34% | 0.25% | 0.25% |
| 9 | Ryman Hospitality Properties, Inc. | 0.25% | 1.00% | 0.25% |
| 10 | Glaukos Corp. | 0.25% | 0.84% | 0.25% |
| 11 | TG Therapeutics, Inc. | 0.25% | 0.82% | 0.25% |
| 12 | Federal Signal Corp. | 0.24% | 0.82% | 0.24% |
Only in IWM
1,698 total- Moog, Inc. 0.38%
- Hut 8 Corp. 0.37%
- BrightSpring Health Services, Inc. 0.35%
- Cytokinetics, Inc. 0.35%
- UMB Financial Corp. 0.33%
- JFrog Ltd. 0.31%
- Riot Platforms, Inc. 0.30%
- Krystal Biotech, Inc. 0.30%
- CareTrust REIT, Inc. 0.28%
- Old National Bancorp 0.28%
Only in VIOG
35 total- Corcept Therapeutics Inc 1.25%
- FormFactor Inc 0.90%
- Etsy Inc 0.89%
- Armstrong World Industries Inc 0.85%
- Madison Square Garden Sports Corp 0.80%
- Lyft Inc 0.74%
- Everus Construction Group Inc 0.68%
- Virtu Financial Inc 0.62%
- Powell Industries Inc 0.59%
- Qorvo Inc 0.56%
Related comparisons
More comparisons with IWM
- 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 27.2%
- IWM vs VBR · Vanguard Morningstar Small-Cap Value ETF 25.8%
- IWM vs VB · Vanguard Morningstar Small-Cap ETF 25.5%
- IWM vs SMLF · iShares U.S. Small-Cap Equity Factor ETF 25.5%
More comparisons with VIOG
- VIOG vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 28.8%
- VIOG vs IJS · iShares S&P Small-Cap 600 Value ETF 26.5%
- VIOG vs SCHA · Schwab U.S. Small-Cap ETF 23.5%
- VIOG vs DFAS · DFA U.S. Small Cap Portfolio-ETF Class Shares 22.5%
- VIOG vs FNDA · Schwab Fundamental U.S. Small Company ETF 21.8%
- VIOG vs IWN · iShares Russell 2000 Value ETF 21.7%
Percentages are holdings overlap with the named fund.
Open IWM or VIOG 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.