IWF vs VOO: how much do they overlap?
iShares Russell 1000 Growth ETF (IWF) · Vanguard S&P 500 ETF (VOO)
overlap by weight · 189 shared holdings
IWF: 387 holdings (as of 2026-03-31) · VOO: 504 holdings (as of 2026-03-31)
Moderate overlap
What this means
IWF and VOO share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
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 IWF | in VOO |
|---|---|---|---|
| NVIDIA CORPORATION | NVDA | 12.92% | 7.58% |
| APPLE INC. | AAPL | 11.64% | 6.66% |
| MICROSOFT CORPORATION | MSFT | 8.82% | 4.91% |
| AMAZON.COM, INC. | AMZN | 4.66% | 3.64% |
| ALPHABET INC. | GOOGL | 3.54% | 2.99% |
| BROADCOM INC. | AVGO | 4.79% | 2.62% |
| ALPHABET INC. | GOOG | 2.87% | 2.4% |
| META PLATFORMS, INC. | META | 3.46% | 2.24% |
| TESLA, INC. | TSLA | 3.55% | 1.87% |
| ELI LILLY AND COMPANY | LLY | 2.66% | 1.3% |
FAQ
How much do IWF and VOO overlap?
IWF and VOO have a 57.6% overlap by weight, sharing 189 holdings (out of 387 in IWF and 504 in VOO), based on official issuer holdings as of 2026-03-31.
What does 57.6% overlap mean?
IWF and VOO share a meaningful slice of holdings. They are related but not interchangeable; check the shared names below to see where your exposure doubles up.
Which stocks do IWF and VOO both hold?
The largest shared positions are NVIDIA CORPORATION, APPLE INC., MICROSOFT CORPORATION, AMAZON.COM, INC., ALPHABET INC.. The full list of top shared holdings with weights in each fund is shown on this page.