ETF comparison
SPSM vs VIOO
Both US Small Cap.
State Street SPDR Portfolio S&P 600 Small Cap ETF · Vanguard S&P Small-Cap 600 Index Fund ETF Shares
Holdings overlap
588 positions appear in both funds. Buying equal dollars of SPSM and VIOO would leave roughly 89.3% 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
SPSM is 4 bps cheaper than VIOO. On a $100,000 position that's about $40/yr more in fees for VIOO.
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 SPSM vs VIOO.
Top shared holdings
588 shared in total| # | Holding | In SPSM | In VIOO | Overlap |
|---|---|---|---|---|
| 1 | Viasat Inc | 0.66% | 0.51% | 0.51% |
| 2 | Match Group Inc | 0.48% | 0.53% | 0.48% |
| 3 | Element Solutions Inc | 0.59% | 0.45% | 0.45% |
| 4 | Corcept Therapeutics Inc | 0.45% | 0.60% | 0.45% |
| 5 | Glaukos Corp | 0.45% | 0.59% | 0.45% |
| 6 | Ryman Hospitality Properties Inc | 0.44% | 0.48% | 0.44% |
| 7 | FormFactor Inc | 0.68% | 0.44% | 0.44% |
| 8 | Eastman Chemical Co | 0.42% | 0.46% | 0.42% |
| 9 | CarMax Inc | 0.41% | 0.49% | 0.41% |
| 10 | Qorvo Inc | 0.41% | 0.43% | 0.41% |
| 11 | StoneX Group Inc | 0.45% | 0.40% | 0.40% |
| 12 | Protagonist Therapeutics Inc | 0.40% | 0.50% | 0.40% |
Only in SPSM
16 total- Molina Healthcare Inc 0.65%
- BrightSpring Health Services Inc 0.60%
- Krystal Biotech Inc 0.53%
- Gates Industrial Corp PLC 0.39%
- Catalyst Pharmaceuticals Inc 0.20%
- Select Medical Holdings Corp 0.10%
- Stellar Bancorp Inc 0.10%
- Leggett & Platt Inc 0.09%
- Two Harbors Investment Corp 0.07%
- Avanos Medical Inc 0.06%
Only in VIOO
17 total- Gates Industrial Corp Ltd 0.36%
- Mobility Global Inc 0.34%
- Construction Partners Inc 0.28%
- Tenable Holdings Inc 0.22%
- Tutor Perini Corp 0.22%
- Karman Holdings Inc 0.21%
- Centrus Energy Corp 0.18%
- Solaris Energy Infrastructure Inc 0.16%
- Five9 Inc 0.15%
- Gulfport Energy Corp 0.15%
Related comparisons
More comparisons with SPSM
- SPSM vs IJS · iShares S&P Small-Cap 600 Value ETF 63.6%
- SPSM vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 61.7%
- SPSM vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 60.7%
- SPSM vs IJT · iShares S&P Small-Cap 600 Growth ETF 60.5%
- SPSM vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 52.4%
- SPSM vs IWM · iShares Russell 2000 ETF 47.1%
More comparisons with VIOO
- VIOO vs IJR · iShares Core S&P Small-Cap ETF 87.6%
- VIOO vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 65.5%
- VIOO vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 63.2%
- VIOO vs IJS · iShares S&P Small-Cap 600 Value ETF 62.1%
- VIOO vs IJT · iShares S&P Small-Cap 600 Growth ETF 56.7%
- VIOO vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 52.6%
Percentages are holdings overlap with the named fund.
Open SPSM or VIOO 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.