ETF Overlap Checker
Quickly spot redundant exposure before doubling up on the same companies. Enter any two ETFs from our coverage list to see overlap, diversification metrics, and concentration risks.
Select ETFs to compare
Type a ticker or choose from the suggestions list (2–5 letters).
Vanguard S&P 500 ETF
Vanguard Total Stock Market ETF
Overlap snapshot
Weighted overlap uses the smaller weight for each shared holding.
27.4%
Low overlap - Excellent diversification. These ETFs provide complementary exposure with minimal redundancy.
Common holdings
10
100% of each ETF's top holdings
73
New exposure via ETF 2
72.6%
Portion of ETF 2 that is not owned via ETF 1
Price correlation
Measured over the trailing 12 months (1 = moves together, -1 = inverse).
Sector concentration
Combined exposure assumes a 50/50 split between the two ETFs.
| Sector | VOO | VTI | Combined | Status |
|---|---|---|---|---|
| Technology | 16.2% | 15.0% | 15.6% | OK |
| Communication | 5.7% | 5.4% | 5.6% | OK |
| Consumer Cyclical | 4.6% | 4.3% | 4.4% | OK |
| Financial | 1.6% | 1.5% | 1.6% | OK |
| Healthcare | 1.3% | 1.2% | 1.3% | OK |
Common holdings
Overlap is the lower weight between the two funds for each company.
Biggest overlapping bets
| Company | Ticker | VOO weight | VTI weight | Overlap |
|---|---|---|---|---|
| Apple Inc. | AAPL | 7.2% | 6.5% | 6.5% |
| Microsoft Corp. | MSFT | 6.1% | 5.8% | 5.8% |
| Amazon.com Inc. | AMZN | 3.1% | 2.9% | 2.9% |
| NVIDIA Corp. | NVDA | 2.9% | 2.7% | 2.7% |
| Alphabet Inc. Class A | GOOGL | 2.0% | 1.9% | 1.9% |
| Meta Platforms Inc. | META | 1.9% | 1.8% | 1.8% |
| Alphabet Inc. Class C | GOOG | 1.8% | 1.7% | 1.7% |
| Berkshire Hathaway Inc. | BRK.B | 1.6% | 1.5% | 1.5% |
| Tesla Inc. | TSLA | 1.5% | 1.4% | 1.4% |
| UnitedHealth Group Inc. | UNH | 1.3% | 1.2% | 1.2% |
Make the most of this tool
Use the guidance below to interpret overlap results and adjust your asset mix.
We only model each ETF's top 10 holdings, which typically represent 20-30% of fund assets. Full overlap may be higher or lower once smaller holdings are factored in.
Holdings data reflects 2024–2025 snapshots. Always confirm exposure with the fund sponsor or your brokerage before making allocation changes.
For institutional-level accuracy, request the official holdings CSV from the ETF provider or work with a financial professional.