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
581 positions appear in both funds. Buying equal dollars of SPSM and VIOO would leave roughly 91.4% 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
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
581 shared in total| # | Holding | In SPSM | In VIOO | Overlap |
|---|---|---|---|---|
| 1 | Viasat Inc | 0.66% | 0.64% | 0.64% |
| 2 | FormFactor Inc | 0.68% | 0.57% | 0.57% |
| 3 | Element Solutions Inc | 0.59% | 0.57% | 0.57% |
| 4 | Argan Inc | 0.60% | 0.54% | 0.54% |
| 5 | Molina Healthcare Inc | 0.65% | 0.53% | 0.53% |
| 6 | Match Group Inc | 0.48% | 0.50% | 0.48% |
| 7 | BrightSpring Health Services Inc | 0.60% | 0.48% | 0.48% |
| 8 | Krystal Biotech Inc | 0.53% | 0.47% | 0.47% |
| 9 | StoneX Group Inc | 0.45% | 0.47% | 0.45% |
| 10 | Everus Construction Group Inc | 0.46% | 0.45% | 0.45% |
| 11 | ESCO Technologies Inc | 0.49% | 0.44% | 0.44% |
| 12 | MaxLinear Inc | 0.58% | 0.44% | 0.44% |
Only in SPSM
23 total- Pool Corp 0.37%
- Conagra Brands Inc 0.35%
- Liquidia Corp 0.30%
- Eastern Bankshares Inc 0.26%
- Lazard Inc 0.25%
- Campbell's Company/The 0.24%
- EPAM Systems Inc 0.22%
- Dave Inc 0.21%
- Credit Acceptance Corp 0.20%
- WesBanco Inc 0.20%
Only in VIOO
22 total- Sanmina Corp 0.83%
- Semtech Corp 0.83%
- Viavi Solutions Inc 0.66%
- Apollo Commercial Real Estate Finance Inc 0.08%
- Kennedy-Wilson Holdings Inc 0.08%
- ProAssurance Corp 0.07%
- Oxford Industries Inc 0.04%
- PRA Group Inc 0.04%
- Insteel Industries Inc 0.03%
- Universal Health Realty Income Trust 0.03%
Related comparisons
More comparisons with SPSM
- SPSM vs IJS · iShares S&P Small-Cap 600 Value ETF 63.6%
- SPSM vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 61.3%
- SPSM vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 61.1%
- 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 90.2%
- VIOO vs VIOV · Vanguard S&P Small-Cap 600 Value Index Fund ETF Shares 64.2%
- VIOO vs VIOG · Vanguard S&P Small-Cap 600 Growth Index Fund ETF Shares 63.6%
- VIOO vs IJS · iShares S&P Small-Cap 600 Value ETF 62.0%
- VIOO vs IJT · iShares S&P Small-Cap 600 Growth ETF 58.0%
- VIOO vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 51.0%
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.