iShares U.S. Technology ETF (IYW) and Vanguard Morningstar Mega Cap Growth ETF (MGK) share 27 holdings, with roughly 64.6% of their portfolio weight overlapping.
Holdings as of: IYW November 5, 2026 · MGK September 30, 2026.
Fund pages: IYW (iShares U.S. Technology ETF) · MGK (Vanguard Morningstar Mega Cap Growth ETF)
Weight overlap
64.6%
Shared portfolio weight
Shared holdings
27
Securities in both funds
Funds
IYW · MGK
Compared side by side
Interactive charts, sector exposure, combined allocation, and the full overlap heatmap.
Every holding both funds own, ranked by shared exposure (how much of the position they hold in common). The weight gap shows which fund tilts more heavily into it.
| Holding | In IYW | In MGK | Weight gap |
|---|---|---|---|
| NVDANVIDIA | 16.02% | 13.69% | 2.33%IYW |
| AAPLAPPLE | 18.82% | 12.53% | 6.30%IYW |
| MSFTMICROSOFT | 15.07% | 9.46% | 5.61%IYW |
| METAMETA PLATFORMS | 3.38% | 4.96% | 1.59%MGK |
| AVGOBROADCOM | 3.06% | 4.30% | 1.24%MGK |
| AMDADVANCED MICRO DEVICES | 2.51% | 3.22% | 0.71%MGK |
| GOOGLALPHABET | 2.40% | 4.98% | 2.58%MGK |
| GOOGALPHABET CL C | 1.95% | 3.95% | 2.00%MGK |
| PLTRPALANTIR TECHNOLOGIES A | 1.95% | 1.45% | 0.50%IYW |
| AMATAPPLIED MATERIALS | 1.43% | 1.45% | 0.02%MGK |
| INTCINTEL | 1.35% | 1.87% | 0.52%MGK |
| LRCXLAM RESEARCH | 1.31% | 1.45% | 0.14%MGK |
| PANWPALO ALTO NETWORKS | 1.43% | 1.22% | 0.21%IYW |
| CRWDCROWDSTRIKE HOLDINGS | 1.23% | 1.04% | 0.19%IYW |
| KLACKLA | 0.96% | 0.99% | 0.03%MGK |
| ORCLORACLE | 1.15% | 0.89% | 0.25%IYW |
| APHAMPHENOL | 0.99% | 0.84% | 0.15%IYW |
| SNDKSANDISK | 0.66% | 0.98% | 0.31%MGK |
| MRVLMARVELL TECHNOLOGY | 0.66% | 0.95% | 0.29%MGK |
| NOWSERVICENOW | 0.59% | 0.62% | 0.03%MGK |
| WDCWESTERN DIGITAL | 0.52% | 0.68% | 0.16%MGK |
| CDNSCADENCE DESIGN SYS | 0.49% | 0.52% | 0.04%MGK |
| SNPSSYNOPSYS | 0.46% | 0.50% | 0.03%MGK |
| GLWCORNING | 0.46% | 0.58% | 0.12%MGK |
| APPAPPLOVIN | 0.48% | 0.45% | 0.03%IYW |
| FTNTFORTINET | 0.42% | 0.42% | 0.01%MGK |
| SNOWSnowflake | 0.51% | 0.39% | 0.12%IYW |
1–20 of 27
How each fund's equity holdings break down by sector, side by side — the clearest read on where the two funds tilt differently.
| Sector | In IYW | In MGK |
|---|---|---|
Technology | 90.9% | 62.0% |
Communication Services | 8.4% | 15.5% |
Consumer Cyclical | 0.4% | 9.6% |
Healthcare | 0.0% | 4.4% |
Financial Services | 0.1% | 4.1% |
Industrials | 0.1% | 2.4% |
Real Estate | 0.0% | 1.2% |
Basic Materials | 0.0% | 0.4% |
Consumer Defensive | 0.0% | 0.4% |
Weights are of each fund’s classified equity holdings.
IYW
MGK
Two ETFs overlap when they hold the same underlying securities. Holding both funds can leave you more concentrated than you think — you may own the same large companies twice, at a combined weight neither fund shows on its own. The weight overlap above is the share of portfolio weight the two funds hold in common: for every security both own, it counts only the smaller of the two weights (the slice you genuinely double up on). 0% means completely different books; 100% means effectively identical funds.