ETF comparison
ITOT vs VOO
US Total Market vs US Large Cap.
iShares Core S&P Total U.S. Stock Market ETF · Vanguard S&P 500 ETF
Holdings overlap
504 positions appear in both funds. Buying equal dollars of ITOT and VOO would leave roughly 88.1% 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 ITOT vs VOO.
Top shared holdings
504 shared in total| # | Holding | In ITOT | In VOO | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA Corp. | 6.63% | 7.51% | 6.63% |
| 2 | Apple, Inc. | 5.81% | 6.59% | 5.81% |
| 3 | Microsoft Corp. | 3.79% | 4.30% | 3.79% |
| 4 | Amazon.com, Inc. | 3.19% | 3.62% | 3.19% |
| 5 | Alphabet, Inc. | 2.86% | 3.25% | 2.86% |
| 6 | Broadcom, Inc. | 2.45% | 2.77% | 2.45% |
| 7 | Alphabet, Inc. | 2.29% | 2.59% | 2.29% |
| 8 | Micron Technology, Inc. | 1.78% | 2.02% | 1.78% |
| 9 | Meta Platforms, Inc. | 1.69% | 1.92% | 1.69% |
| 10 | Tesla, Inc. | 1.62% | 1.84% | 1.62% |
| 11 | Eli Lilly & Co. | 1.30% | 1.47% | 1.30% |
| 12 | Advanced Micro Devices, Inc. | 1.30% | 1.47% | 1.30% |
Only in ITOT
1,994 total- Space Exploration Technologies Corp. 0.14%
- Snowflake, Inc. 0.12%
- Bloom Energy Corp. 0.11%
- Cloudflare, Inc. 0.11%
- Astera Labs, Inc. 0.09%
- Rocket Lab Corp. 0.07%
- Cheniere Energy, Inc. 0.07%
- Ferguson Enterprises, Inc. 0.06%
- Credo Technology Group Holding Ltd. 0.06%
- Alnylam Pharmaceuticals, Inc. 0.06%
Only in VOO
0 totalEvery VOO position is also held by ITOT.
Related comparisons
More comparisons with ITOT
- ITOT vs SPYM · State Street SPDR Portfolio S&P 500 ETF 88.1%
- ITOT vs IVV · iShares Core S&P 500 ETF 88.1%
- ITOT vs VV · Vanguard Morningstar Large-Cap ETF 86.9%
- ITOT vs DFAU · Dimensional US Core Equity Market ETF 86.4%
- ITOT vs BBUS · JPMorgan BetaBuilders U.S. Equity ETF 85.1%
- ITOT vs SPY · State Street SPDR S&P 500 ETF Trust 83.2%
More comparisons with VOO
- VOO vs VTI · Vanguard Morningstar Total Stock Market ETF 88.1%
- VOO vs SCHB · Schwab U.S. Broad Market ETF 87.8%
- VOO vs IWV · iShares Russell 3000 ETF 87.8%
- VOO vs DFUS · Dimensional U.S. Equity Market ETF 87.7%
- VOO vs VTHR · Vanguard Russell 3000 Index Fund ETF Shares 87.3%
- VOO vs DFAU · Dimensional US Core Equity Market ETF 82.0%
Percentages are holdings overlap with the named fund.
Open ITOT or VOO 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.