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 100% by weight. 10 of VOO's top 10 holdings also appear in VTI. A 50/50 blend of the two behaves like about 53 equally-weighted bets (diversification grade B). 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 50 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. | 7.89% | 6.70% |
| AAPL Apple Inc. | 7.05% | 6.30% |
| MSFT Microsoft Corp. | 5.14% | 4.60% |
| AMZN Amazon.com Inc. | 4.07% | 3.60% |
| GOOGL Alphabet Inc. Class A | 3.41% | 3.05% |
| AVGO Broadcom Inc. | 3.26% | 2.91% |
| GOOG Alphabet Inc. Class C | 2.71% | 2.39% |
| META Facebook Inc. Class A | 2.13% | 1.90% |
| TSLA Tesla Inc. | 1.89% | 1.69% |
| MU Micron Technology Inc. | 1.68% | 1.50% |
| LLY Eli Lilly & Co. | 1.35% | 1.29% |
| BRK.B Berkshire Hathaway Inc. Class B | 1.34% | 1.17% |
| AMD Advanced Micro Devices Inc. | 1.29% | 1.16% |
| JPM JPMorgan Chase & Co. | 1.16% | 1.04% |
| XOM Exxon Mobil Corp. | 0.93% | 0.83% |
+ 35 more shared holdings.
Only in VOO
Vanguard S&P 500 ETF — US large-cap. Its biggest holdings that VTI doesn’t have:
| Every listed VOO holding is also in VTI. |
Only in VTI
Vanguard Total Stock Market ETF — total US market. Its biggest holdings that VOO doesn’t have:
| Every listed VTI holding is also in VOO. |
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 ~53 equal positions, with the top 10 alone at 37% and the Magnificent Seven at 32%.
Holdings as of — VOO: May 31, 2026 (Vanguard); VTI: May 31, 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 100% 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 50 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 53 positions and a B diversification grade.
- What does VTI hold that VOO doesn't?
- VOO contains essentially all of VTI's listed holdings.
- Which is more concentrated, VOO or VTI?
- VOO's top 10 holdings are 61% of its listed weight; VTI's are 61%. The more concentrated fund leans harder on its largest names.