ETF comparison
VB vs VIOO
Both US Small Cap.
Vanguard Morningstar Small-Cap ETF · Vanguard S&P Small-Cap 600 Index Fund ETF Shares
Holdings overlap
468 positions appear in both funds. Buying equal dollars of VB and VIOO would leave roughly 18.8% 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
VB 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 VB vs VIOO.
Top shared holdings
468 shared in total| # | Holding | In VB | In VIOO | Overlap |
|---|---|---|---|---|
| 1 | Semtech Corp | 0.18% | 0.83% | 0.18% |
| 2 | Sanmina Corp | 0.16% | 0.83% | 0.16% |
| 3 | FormFactor Inc | 0.15% | 0.57% | 0.15% |
| 4 | Molina Healthcare Inc | 0.14% | 0.53% | 0.14% |
| 5 | Viavi Solutions Inc | 0.14% | 0.66% | 0.14% |
| 6 | Viasat Inc | 0.14% | 0.64% | 0.14% |
| 7 | BrightSpring Health Services Inc | 0.14% | 0.48% | 0.14% |
| 8 | Element Solutions Inc | 0.13% | 0.57% | 0.13% |
| 9 | MaxLinear Inc | 0.13% | 0.44% | 0.13% |
| 10 | Argan Inc | 0.13% | 0.54% | 0.13% |
| 11 | Krystal Biotech Inc | 0.13% | 0.47% | 0.13% |
| 12 | ESCO Technologies Inc | 0.11% | 0.44% | 0.11% |
Only in VB
841 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%
Only in VIOO
135 total- Kulicke & Soffa Industries Inc 0.31%
- Cleanspark Inc 0.27%
- SolarEdge Technologies Inc 0.27%
- Enova International Inc 0.23%
- Ultra Clean Holdings Inc 0.23%
- Catalyst Pharmaceuticals Inc 0.21%
- Vita Coco Co Inc/The 0.19%
- Hawkins Inc 0.19%
- Patrick Industries Inc 0.18%
- Seacoast Banking Corp of Florida 0.17%
Related comparisons
More comparisons with VB
More comparisons with VIOO
- VIOO vs VBK · Vanguard Morningstar Small-Cap Growth ETF 17.0%
- VIOO vs CALF · Pacer US Small Cap Cash Cows 100 ETF 10.8%
- VIOO vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 2.5%
- VIOO vs VTI · Vanguard Morningstar Total Stock Market ETF 2.5%
- VIOO vs SCHB · Schwab U.S. Broad Market ETF 2.3%
- VIOO vs VYM · Vanguard High Dividend Yield Index Fund ETF Shares 1.9%
Percentages are holdings overlap with the named fund.
Open VB 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.