IVV vs VOO: how much do they overlap?
iShares Core S&P 500 ETF (IVV) · Vanguard S&P 500 ETF (VOO)
overlap by weight · 503 shared holdings
IVV: 503 holdings (as of 2026-03-31) · VOO: 504 holdings (as of 2026-03-31)
High overlap
What this means
IVV and VOO are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
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.
Top shared holdings
| Company | Ticker | in IVV | in VOO |
|---|---|---|---|
| NVIDIA Corp. | NVDA | 7.56% | 7.58% |
| Apple, Inc. | AAPL | 6.65% | 6.66% |
| Microsoft Corp. | MSFT | 4.91% | 4.91% |
| Amazon.com, Inc. | AMZN | 3.63% | 3.64% |
| Alphabet, Inc. | GOOGL | 2.99% | 2.99% |
| Broadcom, Inc. | AVGO | 2.62% | 2.62% |
| Alphabet, Inc. | GOOG | 2.39% | 2.4% |
| Meta Platforms, Inc. | META | 2.23% | 2.24% |
| Tesla, Inc. | TSLA | 1.87% | 1.87% |
| Berkshire Hathaway, Inc. | BRK.B | 1.57% | 1.57% |
FAQ
How much do IVV and VOO overlap?
IVV and VOO have a 99.6% overlap by weight, sharing 503 holdings (out of 503 in IVV and 504 in VOO), based on official issuer holdings as of 2026-03-31.
What does 99.6% overlap mean?
IVV and VOO are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Which stocks do IVV and VOO both hold?
The largest shared positions are NVIDIA Corp., Apple, Inc., Microsoft Corp., Amazon.com, Inc., Alphabet, Inc.. The full list of top shared holdings with weights in each fund is shown on this page.