SPY vs VOO ETF holdings comparison
SPDR S&P 500 ETF Trust (SPY) · Vanguard S&P 500 ETF (VOO)
SPY and VOO overlap by 91.6% by portfolio weight. The remaining 8.4 percentage points are not counted as shared holdings weight by this calculation. They share 490 stocks; the largest shared position is Nvidia Corp (NVDA), contributing 7.58% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
SPY and VOO share most of their portfolio weight in the same underlying stocks. OverlapCheck labels this "high holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in SPY | in VOO |
|---|---|---|---|
| Nvidia Corp | NVDA | 7.80% | 7.58% |
| Apple Inc | AAPL | 6.88% | 6.66% |
| Microsoft Corp | MSFT | 5.52% | 4.91% |
| Amazon.Com Inc | AMZN | 3.86% | 3.64% |
| Alphabet Inc Cl A | GOOGL | 3.08% | 2.99% |
| Broadcom Inc | AVGO | 2.55% | 2.62% |
| Alphabet Inc Cl C | GOOG | 2.45% | 2.40% |
| Meta Platforms Inc Class A | META | 1.89% | 2.24% |
| Tesla Inc | TSLA | 1.49% | 1.87% |
| Berkshire Hathaway Inc Cl B | BRK.B | 1.40% | 1.57% |
Holdings only in SPY or VOO
SPY has 13 fund-only positions representing approximately 1.9 percentage points of reported exposure; VOO has 13 fund-only positions representing approximately 1.9 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in SPY
| Company | Ticker | Weight |
|---|---|---|
| Exxonmobil Holdings Corp | XOM | 1.01% |
| Marvell Technology Inc | MRVL | 0.32% |
| Honeywell International Inc | HON | 0.10% |
| Honeywell Aerospace Inc | HONA | 0.08% |
| Ferguson Enterprises Inc | FERG | 0.07% |
| Flex Ltd | FLEX | 0.06% |
| Veeva Systems Inc Class A | VEEV | 0.06% |
| Carnival Corp Ltd | CCL | 0.05% |
| Casey S General Stores Inc | CASY | 0.05% |
| Amcor Plc | AMCR | 0.03% |
Largest positions only in VOO
| Company | Ticker | Weight |
|---|---|---|
| Exxon Mobil Corp | XOM | 1.27% |
| Honeywell International Inc | HON | 0.26% |
| Electronic Arts Inc | EA | 0.08% |
| Carnival Corp | CCL1EUR | 0.05% |
| Coterra Energy Inc | CTRA | 0.05% |
| AvalonBay Communities Inc | AVB | 0.04% |
| DuPont de Nemours Inc | DD | 0.03% |
| Amcor PLC | N/A | 0.03% |
| Hologic Inc | HO1 | 0.03% |
| Conagra Brands Inc | CAG | 0.01% |
FAQ
How much do SPY and VOO overlap?
SPY and VOO have 91.6% overlap by weight, sharing 490 equity positions (out of 503 in SPY and 503 in VOO). The official holdings files used are dated 2026-08-25 for SPY and 2026-03-31 for VOO.
What does 91.6% overlap mean?
SPY and VOO share most of their portfolio weight in the same underlying stocks. OverlapCheck labels this "high holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do SPY and VOO both hold?
The largest shared positions are Nvidia Corp, Apple Inc, Microsoft Corp, Amazon.Com Inc, Alphabet Inc Cl A. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between SPY and VOO?
SPY has 13 positions not found in VOO, while VOO has 13 positions not found in SPY. The largest fund-only positions and their weights are shown on this page.