ETF comparison
SPSM vs VB
Both US Small Cap.
State Street SPDR Portfolio S&P 600 Small Cap ETF · Vanguard Morningstar Small-Cap ETF
Holdings overlap
478 positions appear in both funds. Buying equal dollars of SPSM and VB would leave roughly 19.0% 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
Expense ratios are effectively identical (0.030% vs 0.030%).
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 VB.
Top shared holdings
478 shared in total| # | Holding | In SPSM | In VB | Overlap |
|---|---|---|---|---|
| 1 | FormFactor Inc | 0.68% | 0.15% | 0.15% |
| 2 | Molina Healthcare Inc | 0.65% | 0.14% | 0.14% |
| 3 | Viasat Inc | 0.66% | 0.14% | 0.14% |
| 4 | BrightSpring Health Services Inc | 0.60% | 0.14% | 0.14% |
| 5 | Element Solutions Inc | 0.59% | 0.13% | 0.13% |
| 6 | MaxLinear Inc | 0.58% | 0.13% | 0.13% |
| 7 | Argan Inc | 0.60% | 0.13% | 0.13% |
| 8 | Krystal Biotech Inc | 0.53% | 0.13% | 0.13% |
| 9 | ESCO Technologies Inc | 0.49% | 0.11% | 0.11% |
| 10 | Match Group Inc | 0.48% | 0.11% | 0.11% |
| 11 | Alkermes PLC | 0.47% | 0.11% | 0.11% |
| 12 | Everus Construction Group Inc | 0.46% | 0.10% | 0.10% |
Only in SPSM
126 total- Kulicke & Soffa Industries Inc 0.38%
- Ultra Clean Holdings Inc 0.35%
- Enova International Inc 0.32%
- Liquidia Corp 0.30%
- Ichor Holdings Ltd 0.21%
- Dave Inc 0.21%
- Cleanspark Inc 0.20%
- Catalyst Pharmaceuticals Inc 0.20%
- SolarEdge Technologies Inc 0.19%
- Penguin Solutions Inc 0.19%
Only in VB
831 total- Credo Technology Group Holding Ltd 0.55%
- Jabil Inc 0.49%
- REVOLUTION Medicines Inc 0.46%
- Astera Labs Inc 0.45%
- Natera Inc 0.45%
- EMCOR Group Inc 0.45%
- Twilio Inc 0.38%
- NRG Energy Inc 0.37%
- MKS Instruments Inc 0.37%
- Flex Ltd 0.36%
Related comparisons
More comparisons with SPSM
- SPSM vs VBK · Vanguard Morningstar Small-Cap Growth ETF 16.5%
- SPSM vs CALF · Pacer US Small Cap Cash Cows 100 ETF 10.3%
- SPSM vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 2.6%
- SPSM vs VTI · Vanguard Morningstar Total Stock Market ETF 2.5%
- SPSM vs SCHB · Schwab U.S. Broad Market ETF 2.4%
- SPSM vs VYM · Vanguard High Dividend Yield Index Fund ETF Shares 2.0%
More comparisons with VB
- VB vs IJR · iShares Core S&P Small-Cap ETF 19.0%
- VB vs VIOO · Vanguard S&P Small-Cap 600 Index Fund ETF Shares 18.8%
- VB vs AVUS · Avantis US Equity ETF 17.1%
- VB vs PRF · Invesco RAFI US 1000 ETF 16.1%
- VB vs JQUA · JPMorgan U.S. Quality Factor ETF 16.0%
- VB vs IWO · iShares Russell 2000 Growth ETF 15.5%
Percentages are holdings overlap with the named fund.
Open SPSM or VB 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.