ETF comparison
ITOT vs VO
US Total Market vs US Mid Cap.
iShares Core S&P Total U.S. Stock Market ETF · Vanguard Morningstar Mid-Cap ETF
Holdings overlap
281 positions appear in both funds. Buying equal dollars of ITOT and VO would leave roughly 15.8% 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
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 ITOT vs VO.
Top shared holdings
281 shared in total| # | Holding | In ITOT | In VO | Overlap |
|---|---|---|---|---|
| 1 | Western Digital Corp. | 0.30% | 1.06% | 0.30% |
| 2 | Seagate Technology Holdings plc | 0.30% | 1.05% | 0.30% |
| 3 | Vertiv Holdings Co. | 0.18% | 1.22% | 0.18% |
| 4 | Quanta Services, Inc. | 0.15% | 1.04% | 0.15% |
| 5 | Howmet Aerospace, Inc. | 0.15% | 1.04% | 0.15% |
| 6 | Newmont Corp. | 0.14% | 0.48% | 0.14% |
| 7 | Cummins, Inc. | 0.13% | 0.95% | 0.13% |
| 8 | Fortinet, Inc. | 0.13% | 0.46% | 0.13% |
| 9 | Williams Cos., Inc. (The) | 0.12% | 0.44% | 0.12% |
| 10 | Johnson Controls International plc | 0.12% | 0.43% | 0.12% |
| 11 | Snowflake, Inc. | 0.12% | 0.41% | 0.12% |
| 12 | Datadog, Inc. | 0.12% | 0.83% | 0.12% |
Only in ITOT
2,217 total- NVIDIA Corp. 6.63%
- Apple, Inc. 5.81%
- Microsoft Corp. 3.79%
- Amazon.com, Inc. 3.19%
- Alphabet, Inc. 2.86%
- Broadcom, Inc. 2.45%
- Alphabet, Inc. 2.29%
- Micron Technology, Inc. 1.78%
- Meta Platforms, Inc. 1.69%
- Tesla, Inc. 1.62%
Only in VO
1 total- Waste Connections Inc 0.41%
Related comparisons
More comparisons with ITOT
- ITOT vs IWS · iShares Russell Mid-Cap Value ETF 15.3%
- ITOT vs SPLV · Invesco S&P 500 Low Volatility ETF 14.7%
- ITOT vs MOAT · VanEck Morningstar Wide Moat ETF 14.2%
- ITOT vs SDY · State Street SPDR S&P Dividend ETF 13.1%
- ITOT vs VLUE · iShares MSCI USA Value Factor ETF 12.0%
- ITOT vs VB · Vanguard Morningstar Small-Cap ETF 11.9%
More comparisons with VO
- VO vs SCHB · Schwab U.S. Broad Market ETF 15.6%
- VO vs SPY · State Street SPDR S&P 500 ETF Trust 15.5%
- VO vs IWV · iShares Russell 3000 ETF 15.5%
- VO vs DFUS · Dimensional U.S. Equity Market ETF 15.4%
- VO vs VTHR · Vanguard Russell 3000 Index Fund ETF Shares 15.2%
- VO vs SPTM · State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 15.1%
Percentages are holdings overlap with the named fund.
Open ITOT 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.