IWF vs MGK: how much do they overlap?
iShares Russell 1000 Growth ETF (IWF) · Vanguard Mega Cap Growth ETF (MGK)
overlap by weight · 53 shared holdings
IWF: 387 holdings (as of 2026-03-31) · MGK: 59 holdings (as of 2026-03-31)
High overlap
What this means
IWF and MGK 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 MGK |
|---|---|---|---|
| NVIDIA CORPORATION | NVDA | 12.92% | 13.75% |
| APPLE INC. | AAPL | 11.64% | 12.6% |
| MICROSOFT CORPORATION | MSFT | 8.82% | 9.01% |
| AMAZON.COM, INC. | AMZN | 4.66% | 4.59% |
| BROADCOM INC. | AVGO | 4.79% | 4.4% |
| TESLA, INC. | TSLA | 3.55% | 4.18% |
| ALPHABET INC. | GOOGL | 3.54% | 5.51% |
| META PLATFORMS, INC. | META | 3.46% | 4.17% |
| ALPHABET INC. | GOOG | 2.87% | 4.37% |
| ELI LILLY AND COMPANY | LLY | 2.66% | 3.17% |
FAQ
How much do IWF and MGK overlap?
IWF and MGK have a 77.3% overlap by weight, sharing 53 holdings (out of 387 in IWF and 59 in MGK), based on official issuer holdings as of 2026-03-31.
What does 77.3% overlap mean?
IWF and MGK are largely the same portfolio. Holding both adds little diversification — most dollars end up in the same underlying stocks.
Which stocks do IWF and MGK both hold?
The largest shared positions are NVIDIA CORPORATION, APPLE INC., MICROSOFT CORPORATION, AMAZON.COM, INC., BROADCOM INC.. The full list of top shared holdings with weights in each fund is shown on this page.