ETF comparison
VB vs VO
US Small Cap vs US Mid Cap.
Vanguard Morningstar Small-Cap ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
33 positions appear in both funds. Buying equal dollars of VB and VO would leave roughly 3.5% 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 VB vs VO.
Top shared holdings
33 shared in total| # | Holding | In VB | In VO | Overlap |
|---|---|---|---|---|
| 1 | Astera Labs Inc | 0.45% | 0.36% | 0.36% |
| 2 | Flex Ltd | 0.36% | 0.29% | 0.29% |
| 3 | Qnity Electronics Inc | 0.21% | 0.17% | 0.17% |
| 4 | EQT Corp | 0.20% | 0.16% | 0.16% |
| 5 | Centene Corp | 0.19% | 0.15% | 0.15% |
| 6 | Steel Dynamics Inc | 0.19% | 0.15% | 0.15% |
| 7 | Hubbell Inc | 0.17% | 0.13% | 0.13% |
| 8 | Texas Pacific Land Corp | 0.16% | 0.12% | 0.12% |
| 9 | AST SpaceMobile Inc | 0.15% | 0.12% | 0.12% |
| 10 | First Solar Inc | 0.15% | 0.12% | 0.12% |
| 11 | Insmed Inc | 0.14% | 0.11% | 0.11% |
| 12 | NiSource Inc | 0.14% | 0.11% | 0.11% |
Only in VB
1,276 total- Credo Technology Group Holding Ltd 0.55%
- Jabil Inc 0.49%
- REVOLUTION Medicines Inc 0.46%
- Natera Inc 0.45%
- EMCOR Group Inc 0.45%
- Twilio Inc 0.38%
- NRG Energy Inc 0.37%
- MKS Instruments Inc 0.37%
- Tapestry Inc 0.36%
- Casey's General Stores Inc 0.36%
Only in VO
249 total- Vertiv Holdings Co 1.22%
- Western Digital Corp 1.06%
- Seagate Technology Holdings PLC 1.05%
- Quanta Services Inc 1.04%
- Howmet Aerospace Inc 1.04%
- Cummins Inc 0.95%
- Datadog Inc 0.83%
- Bloom Energy Corp 0.79%
- Constellation Energy Corp 0.78%
- Robinhood Markets Inc 0.77%
Related comparisons
More comparisons with VB
- VB vs VFLO · Victoryshares Free Cash Flow ETF 3.3%
- VB vs DUHP · DFA U.S. High Relative Profitability Portfolio – ETF Class Shares 3.3%
- VB vs VONG · Vanguard Russell 1000 Growth Index Fund ETF Shares 3.3%
- VB vs VOO · Vanguard S&P 500 ETF 3.2%
- VB vs SPYM · State Street SPDR Portfolio S&P 500 ETF 3.2%
- VB vs IVV · iShares Core S&P 500 ETF 3.2%
More comparisons with VO
- VO vs CGDV · Capital Group Dividend Value ETF 3.3%
- VO vs PEY · Invesco High Yield Equity Dividend Achievers ETF 2.6%
- VO vs VBR · Vanguard Morningstar Small-Cap Value ETF 2.4%
- VO vs MGK · Vanguard Morningstar Mega Cap Growth ETF 2.3%
- VO vs MGC · Vanguard Morningstar Mega Cap ETF 2.0%
- VO vs VBK · Vanguard Morningstar Small-Cap Growth ETF 1.6%
Percentages are holdings overlap with the named fund.
Open VB or VO 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.