IWF vs VOOG: how much do they overlap?
iShares Russell 1000 Growth ETF (IWF) · Vanguard S&P 500 Growth ETF (VOOG)
overlap by weight · 99 shared holdings
IWF: 387 holdings (as of 2026-03-31) · VOOG: 140 holdings (as of 2026-02-28)
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
High overlap
What this means
IWF and VOOG 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 IWF | in VOOG |
|---|---|---|---|
| NVIDIA CORPORATION | NVDA | 12.92% | 14.16% |
| MICROSOFT CORPORATION | MSFT | 8.82% | 9.6% |
| APPLE INC. | AAPL | 11.64% | 6.42% |
| BROADCOM INC. | AVGO | 4.79% | 4.96% |
| AMAZON.COM, INC. | AMZN | 4.66% | 3.56% |
| ALPHABET INC. | GOOGL | 3.54% | 5.97% |
| META PLATFORMS, INC. | META | 3.46% | 4.64% |
| ALPHABET INC. | GOOG | 2.87% | 4.76% |
| ELI LILLY AND COMPANY | LLY | 2.66% | 2.75% |
| TESLA, INC. | TSLA | 3.55% | 2.31% |
FAQ
How much do IWF and VOOG overlap?
IWF and VOOG have a 71.7% overlap by weight, sharing 99 holdings (out of 387 in IWF and 140 in VOOG), based on official issuer holdings as of 2026-03-31.
What does 71.7% overlap mean?
IWF and VOOG are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Which stocks do IWF and VOOG both hold?
The largest shared positions are NVIDIA CORPORATION, MICROSOFT CORPORATION, APPLE INC., BROADCOM INC., AMAZON.COM, INC.. The full list of top shared holdings with weights in each fund is shown on this page.