ETF comparison
SPMD vs VO
Both US Mid Cap.
State Street SPDR Portfolio S&P 400 Mid Cap ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
1 positions appear in both funds. Buying equal dollars of SPMD and VO would leave roughly 0.1% 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 SPMD vs VO.
Top shared holdings
1 shared in total| # | Holding | In SPMD | In VO | Overlap |
|---|---|---|---|---|
| 1 | Burlington Stores Inc | 0.55% | 0.10% | 0.10% |
Only in SPMD
399 total- Twilio Inc 0.86%
- Carpenter Technology Corp 0.84%
- MKS Inc 0.83%
- Curtiss-Wright Corp 0.77%
- Entegris Inc 0.76%
- nVent Electric PLC 0.76%
- ATI Inc 0.74%
- Illumina Inc 0.73%
- TechnipFMC PLC 0.73%
- Sterling Infrastructure Inc 0.71%
Only in VO
281 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 SPMD
More comparisons with VO
- VO vs DFSV · DFA U.S. Small Cap Value Portfolio – ETF Class Shares 0.1%
- VO vs DFAS · U.S. Small Cap Portfolio-ETF Class Shares 0.1%
- VO vs BBSC · JPMorgan BetaBuilders U.S. Small Cap Equity ETF 0.0%
- VO vs AVUV · Avantis US Small Cap Value ETF 0.0%
- VO vs DEM · WisdomTree Emerging Markets High Dividend Fund 0.0%
- VO vs DGS · WisdomTree Emerging Markets SmallCap Dividend Fund 0.0%
Percentages are holdings overlap with the named fund.
Open SPMD 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.