ETF comparison
SPTM vs VO
US Total Market vs US Mid Cap.
State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
249 positions appear in both funds. Buying equal dollars of SPTM and VO would leave roughly 15.1% 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 SPTM vs VO.
Top shared holdings
249 shared in total| # | Holding | In SPTM | In VO | Overlap |
|---|---|---|---|---|
| 1 | Western Digital Corp | 0.31% | 1.06% | 0.31% |
| 2 | Seagate Technology Holdings PLC | 0.31% | 1.05% | 0.31% |
| 3 | Vertiv Holdings Co | 0.19% | 1.22% | 0.19% |
| 4 | Howmet Aerospace Inc | 0.16% | 1.04% | 0.16% |
| 5 | Quanta Services Inc | 0.15% | 1.04% | 0.15% |
| 6 | Newmont Corp | 0.14% | 0.48% | 0.14% |
| 7 | Cummins Inc | 0.14% | 0.95% | 0.14% |
| 8 | Fortinet Inc | 0.14% | 0.46% | 0.14% |
| 9 | Williams Cos Inc/The | 0.13% | 0.44% | 0.13% |
| 10 | Johnson Controls International plc | 0.13% | 0.43% | 0.13% |
| 11 | Datadog Inc | 0.12% | 0.83% | 0.12% |
| 12 | Royal Caribbean Cruises Ltd | 0.12% | 0.74% | 0.12% |
Only in SPTM
1,259 total- NVIDIA Corp 6.92%
- Apple Inc 6.07%
- Microsoft Corp 3.96%
- Amazon.com Inc 3.33%
- Alphabet Inc 2.99%
- Broadcom Inc 2.56%
- Alphabet Inc 2.38%
- Micron Technology Inc 1.86%
- Meta Platforms Inc 1.76%
- Tesla Inc 1.69%
Only in VO
33 total- Bloom Energy Corp 0.79%
- Cloudflare Inc 0.76%
- Rocket Lab Corp 0.57%
- Cheniere Energy Inc 0.48%
- Ferguson Enterprises Inc 0.45%
- Waste Connections Inc 0.41%
- Snowflake Inc 0.41%
- Alnylam Pharmaceuticals Inc 0.39%
- Coreweave Inc 0.37%
- Astera Labs Inc 0.36%
Related comparisons
More comparisons with SPTM
- SPTM vs VB · Vanguard Morningstar Small-Cap ETF 10.4%
- SPTM vs SCHD · Schwab U.S. Dividend Equity ETF 7.3%
- SPTM vs IJH · iShares Core S&P Mid-Cap ETF 5.2%
- SPTM vs IWM · iShares Russell 2000 ETF 2.7%
- SPTM vs IJR · iShares Core S&P Small-Cap ETF 2.5%
- SPTM vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 95.2%
More comparisons with VO
- VO vs OMFL · Invesco Russell 1000 Dynamic Multifactor ETF 14.9%
- VO vs JAVA · JPMorgan Active Value ETF 14.1%
- VO vs LRGF · iShares U.S. Equity Factor ETF 14.0%
- VO vs RPG · Invesco S&P 500 Pure Growth ETF 13.9%
- VO vs SDY · State Street SPDR S&P Dividend ETF 13.8%
- VO vs ESGV · Vanguard ESG U.S. Stock ETF 13.8%
Percentages are holdings overlap with the named fund.
Open SPTM 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.