Vanguard Morningstar Mega Cap Growth ETF (MGK) and Vanguard S&P 500 ETF (VOO) share 50 holdings, with roughly 52.2% of their portfolio weight overlapping.
Both funds' holdings are as of September 30, 2026.
Fund pages: MGK (Vanguard Morningstar Mega Cap Growth ETF) · VOO (Vanguard S&P 500 ETF)
Weight overlap
52.2%
Shared portfolio weight
Shared holdings
50
Securities in both funds
Funds
MGK · VOO
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 MGK | In VOO | Weight gap |
|---|---|---|---|
| NVDANVIDIA | 13.69% | 8.39% | 5.30%MGK |
| AAPLAPPLE | 12.53% | 7.38% | 5.15%MGK |
| MSFTMICROSOFT | 9.46% | 5.78% | 3.68%MGK |
| AMZNAMAZON.COM | 4.23% | 3.71% | 0.51%MGK |
| GOOGLALPHABET | 4.98% | 3.07% | 1.91%MGK |
| AVGOBROADCOM | 4.30% | 2.54% | 1.76%MGK |
| GOOGALPHABET CL C | 3.95% | 2.45% | 1.49%MGK |
| METAMETA PLATFORMS | 4.96% | 2.43% | 2.53%MGK |
| TSLATESLA | 3.14% | 1.52% | 1.62%MGK |
| AMDADVANCED MICRO DEVICES | 3.22% | 1.52% | 1.71%MGK |
| LLYELI LILLY | 3.11% | 1.41% | 1.70%MGK |
| VVISA | 1.85% | 0.91% | 0.94%MGK |
| INTCINTEL | 1.87% | 0.91% | 0.96%MGK |
| MAMASTERCARD | 1.48% | 0.68% | 0.81%MGK |
| PLTRPALANTIR TECHNOLOGIES A | 1.45% | 0.65% | 0.79%MGK |
| LRCXLAM RESEARCH | 1.45% | 0.62% | 0.83%MGK |
| AMATAPPLIED MATERIALS | 1.45% | 0.62% | 0.83%MGK |
| PANWPALO ALTO NETWORKS | 1.22% | 0.49% | 0.73%MGK |
| NFLXNETFLIX | 1.05% | 0.44% | 0.61%MGK |
| CRWDCROWDSTRIKE HOLDINGS | 1.04% | 0.41% | 0.63%MGK |
| KLACKLA | 0.99% | 0.39% | 0.60%MGK |
| SNDKSANDISK | 0.98% | 0.39% | 0.59%MGK |
| GEVGE VERNOVA | 0.97% | 0.38% | 0.59%MGK |
| ORCLORACLE | 0.89% | 0.36% | 0.53%MGK |
| MRVLMARVELL TECHNOLOGY | 0.95% | 0.35% | 0.60%MGK |
| ANETARISTA NETWORKS | 0.88% | 0.32% | 0.56%MGK |
| STXSEAGATE TECHNOLOGY HOLDINGS | 0.86% | 0.32% | 0.54%MGK |
| APHAMPHENOL | 0.84% | 0.32% | 0.53%MGK |
| WELLWELLTOWER OP | 0.71% | 0.25% | 0.46%MGK |
| WDCWESTERN DIGITAL | 0.68% | 0.25% | 0.43%MGK |
| BABOEING | 0.63% | 0.22% | 0.41%MGK |
| TJXTJX Cos | 0.44% | 0.22% | 0.22%MGK |
| ISRGINTUITIVE SURGICAL | 0.67% | 0.22% | 0.46%MGK |
| NOWSERVICENOW | 0.62% | 0.21% | 0.41%MGK |
| VRTXVERTEX PHARMACEUTICALS | 0.61% | 0.20% | 0.41%MGK |
| BKNGBOOKING HOLDINGS | 0.55% | 0.19% | 0.37%MGK |
| GLWCORNING | 0.58% | 0.18% | 0.39%MGK |
| FTNTFORTINET | 0.42% | 0.17% | 0.26%MGK |
| EQIXEQUINIX | 0.52% | 0.15% | 0.36%MGK |
| CDNSCADENCE DESIGN SYS | 0.52% | 0.14% | 0.39%MGK |
| SNPSSYNOPSYS | 0.50% | 0.13% | 0.37%MGK |
| APPAPPLOVIN | 0.45% | 0.12% | 0.33%MGK |
| MARMARRIOTT INTERNATIONAL | 0.35% | 0.12% | 0.24%MGK |
| ECLECOLAB | 0.43% | 0.11% | 0.32%MGK |
| ORLYOREILLY AUTOMOTIVE | 0.42% | 0.10% | 0.32%MGK |
| MCOMOODYS | 0.41% | 0.10% | 0.30%MGK |
| ABNBAIRBNB | 0.40% | 0.10% | 0.30%MGK |
| CTASCINTAS NO 2 | 0.32% | 0.10% | 0.22%MGK |
| MNSTMONSTER BEVERAGE | 0.38% | 0.09% | 0.29%MGK |
| IBKRINTERACTIVE BROKERS GRO CL A | 0.32% | 0.06% | 0.26%MGK |
1–20 of 50
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 MGK | In VOO |
|---|---|---|
Technology | 62.0% | 40.4% |
Communication Services | 15.5% | 10.0% |
Consumer Cyclical | 9.6% | 8.8% |
Financial Services | 4.1% | 11.1% |
Healthcare | 4.4% | 9.3% |
Industrials | 2.4% | 7.5% |
Consumer Defensive | 0.4% | 4.3% |
Energy | 0.0% | 3.4% |
Real Estate | 1.2% | 1.7% |
Basic Materials | 0.4% | 1.6% |
Utilities | 0.0% | 1.9% |
Weights are of each fund’s classified equity holdings.
MGK
VOO
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.