VGT vs VOO: how much do they really overlap?
VGT (Vanguard Information Technology ETF, tracking the MSCI US IMI Info Tech 25/50) and VOO (Vanguard S&P 500 ETF, tracking the S&P 500) overlap by roughly 51% by weight. 10 of VGT's top 10 holdings also appear in VOO. A 50/50 blend of the two behaves like about 29 equally-weighted bets (diversification grade C). In short, the two funds share a meaningful core of the same megacaps, but each also brings real exposure the other lacks.
The same companies, in both funds
These 18 holdings appear in both VGT and VOO. The weight columns show how much of each fund each name represents.
| Holding | in VGT | in VOO |
|---|---|---|
| NVDA NVIDIA Corp. | 16.10% | 7.51% |
| AAPL Apple Inc. | 14.33% | 6.59% |
| MSFT Microsoft Corp. | 8.28% | 4.30% |
| AVGO Broadcom Inc. | 3.84% | 2.77% |
| MU Micron Technology Inc. | 5.04% | 2.02% |
| AMD Advanced Micro Devices Inc. | 3.65% | 1.47% |
| INTC Intel Corp. | 2.41% | 1.02% |
| AMAT Applied Materials Inc. | 2.26% | 0.89% |
| LRCX Lam Research Corp. | 2.14% | 0.84% |
| CSCO Cisco Systems Inc. | 1.82% | 0.72% |
| KLAC KLA Corp. | 1.59% | 0.61% |
| SNDK Sandisk Corp. | 1.33% | 0.52% |
| PANW Palo Alto Networks Inc. | 1.12% | 0.43% |
| TXN Texas Instruments Inc. | 1.09% | 0.42% |
| PLTR Palantir Technologies Inc. Class A | 1.01% | 0.42% |
+ 3 more shared holdings.
Only in VGT
Vanguard Information Technology ETF — US tech sector. Its biggest holdings that VOO doesn’t have:
| WDC Western Digital Corp. | 0.91% |
| APH Amphenol Corp. Class A | 0.87% |
| STX Seagate Technology Holdings plc | 0.87% |
| GLW Corning Inc. | 0.84% |
| QCOM QUALCOMM Inc. | 0.80% |
| ADI Analog Devices Inc. | 0.79% |
| CRWD Crowdstrike Holdings Inc. Class A | 0.78% |
| ANET Arista Networks Inc. | 0.74% |
Only in VOO
Vanguard S&P 500 ETF — US large-cap. Its biggest holdings that VGT doesn’t have:
| AMZN Amazon.com Inc. | 3.62% |
| GOOGL Alphabet Inc. Class A | 3.25% |
| GOOG Alphabet Inc. Class C | 2.59% |
| META Facebook Inc. Class A | 1.92% |
| TSLA Tesla Inc. | 1.84% |
| LLY Eli Lilly & Co. | 1.47% |
| BRK.B Berkshire Hathaway Inc. Class B | 1.42% |
| JPM JPMorgan Chase & Co. | 1.26% |
So — partly overlapping. Should you hold both?
VGT and VOO share a meaningful core of the same megacaps, but each also brings real exposure the other lacks. Held together they keep a shared megacap core but each still pulls in exposure the other lacks, so a 50/50 blend spreads to ~29 effective positions (grade C).
Holdings as of — VGT: Jun 30, 2026 (Vanguard); VOO: 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 →VGT vs VOO — FAQ
- How much do VGT and VOO overlap?
- VGT and VOO overlap by approximately 51% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 10 of VGT's 10 largest holdings are also held by VOO. They share 18 of their listed top holdings in total.
- Is it redundant to hold both VGT and VOO?
- Because they share a meaningful core of the same megacaps, but each also brings real exposure the other lacks, holding both is partly redundant: you double up on a shared core (NVDA) while each fund still adds distinct exposure. A 50/50 blend has an effective 29 positions and a C diversification grade.
- What does VOO hold that VGT doesn't?
- VOO's largest holdings that VGT doesn't hold include AMZN, GOOGL, GOOG, META, TSLA. Its category is US large-cap, versus VGT's US tech sector.
- Which is more concentrated, VGT or VOO?
- VGT's top 10 holdings are 71% of its listed weight; VOO's are 58%. The more concentrated fund leans harder on its largest names.