VOO vs VTI: how much do they really overlap?
VOO (Vanguard S&P 500 ETF, tracking the S&P 500) and VTI (Vanguard Total Stock Market ETF, tracking the CRSP US Total Market) overlap by roughly 99% by weight. 10 of VOO's top 10 holdings also appear in VTI. A 50/50 blend of the two behaves like about 61 equally-weighted bets (diversification grade A). In short, the two funds hold nearly the same stocks in nearly the same proportions — owning both is largely redundant.
The same companies, in both funds
These 49 holdings appear in both VOO and VTI. The weight columns show how much of each fund each name represents.
| Holding | in VOO | in VTI |
|---|---|---|
| NVDA NVIDIA Corp. | 7.51% | 6.32% |
| AAPL Apple Inc. | 6.59% | 5.84% |
| MSFT Microsoft Corp. | 4.30% | 3.81% |
| AMZN Amazon.com Inc. | 3.62% | 3.17% |
| GOOGL Alphabet Inc. Class A | 3.25% | 2.88% |
| AVGO Broadcom Inc. | 2.77% | 2.46% |
| GOOG Alphabet Inc. Class C | 2.59% | 2.27% |
| MU Micron Technology Inc. | 2.02% | 1.79% |
| META Facebook Inc. Class A | 1.92% | 1.70% |
| TSLA Tesla Inc. | 1.84% | 1.63% |
| LLY Eli Lilly & Co. | 1.47% | 1.40% |
| AMD Advanced Micro Devices Inc. | 1.47% | 1.30% |
| BRK.B Berkshire Hathaway Inc. Class B | 1.42% | 1.24% |
| JPM JPMorgan Chase & Co. | 1.26% | 1.11% |
| JNJ Johnson & Johnson | 0.95% | 0.84% |
+ 34 more shared holdings.
Only in VOO
Vanguard S&P 500 ETF — US large-cap. Its biggest holdings that VTI doesn’t have:
| C Citigroup Inc. | 0.36% |
Only in VTI
Vanguard Total Stock Market ETF — total US market. Its biggest holdings that VOO doesn’t have:
| XOM Exxon Mobil Corp. | 0.78% |
So — nearly identical. Should you hold both?
VOO and VTI hold nearly the same stocks in nearly the same proportions — owning both is largely redundant. If you already hold VOO, adding VTI mostly increases your bet on the names they share rather than spreading it — a 50/50 blend still behaves like only ~61 equal positions, with the top 10 alone at 34% and the Magnificent Seven at 30%.
Holdings as of — VOO: Jun 30, 2026 (Vanguard); VTI: Jun 30, 2026 (Vanguard). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 50); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →VOO vs VTI — FAQ
- How much do VOO and VTI overlap?
- VOO and VTI overlap by approximately 99% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 10 of VOO's 10 largest holdings are also held by VTI. They share 49 of their listed top holdings in total.
- Is it redundant to hold both VOO and VTI?
- Because they hold nearly the same stocks in nearly the same proportions — owning both is largely redundant, holding both is largely redundant — you mostly duplicate the same megacaps and concentrate rather than diversify. A 50/50 blend has an effective 61 positions and a A diversification grade.
- What does VTI hold that VOO doesn't?
- VTI's largest holdings that VOO doesn't hold include XOM. Its category is total US market, versus VOO's US large-cap.
- Which is more concentrated, VOO or VTI?
- VOO's top 10 holdings are 58% of its listed weight; VTI's are 58%. The more concentrated fund leans harder on its largest names.