iShares Core S&P Total U.S. Stock Market ETF (ITOT) and Vanguard Morningstar Mega Cap Growth ETF (MGK) share 52 holdings, with roughly 43.8% of their portfolio weight overlapping.
Holdings as of: ITOT November 5, 2026 · MGK September 30, 2026.
Fund pages: ITOT (iShares Core S&P Total U.S. Stock Market ETF) · MGK (Vanguard Morningstar Mega Cap Growth ETF)
Weight overlap
43.8%
Shared portfolio weight
Shared holdings
52
Securities in both funds
Funds
ITOT · 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 ITOT | In MGK | Weight gap |
|---|---|---|---|
| AAPLAPPLE | 7.05% | 12.53% | 5.48%MGK |
| NVDANVIDIA | 6.17% | 13.69% | 7.52%MGK |
| MSFTMICROSOFT | 5.59% | 9.46% | 3.87%MGK |
| AMZNAMAZON.COM | 3.59% | 4.23% | 0.64%MGK |
| GOOGLALPHABET | 2.33% | 4.98% | 2.65%MGK |
| AVGOBROADCOM | 1.95% | 4.30% | 2.35%MGK |
| GOOGALPHABET CL C | 1.88% | 3.95% | 2.06%MGK |
| METAMETA PLATFORMS | 1.87% | 4.96% | 3.09%MGK |
| LLYELI LILLY | 1.53% | 3.11% | 1.57%MGK |
| TSLATESLA | 1.36% | 3.14% | 1.78%MGK |
| VVISA | 1.01% | 1.85% | 0.84%MGK |
| AMDADVANCED MICRO DEVICES | 0.93% | 3.22% | 2.30%MGK |
| MAMASTERCARD | 0.74% | 1.48% | 0.74%MGK |
| PLTRPALANTIR TECHNOLOGIES A | 0.50% | 1.45% | 0.94%MGK |
| NFLXNETFLIX | 0.38% | 1.05% | 0.67%MGK |
| INTCINTEL | 0.36% | 1.87% | 1.50%MGK |
| PANWPALO ALTO NETWORKS | 0.36% | 1.22% | 0.86%MGK |
| AMATAPPLIED MATERIALS | 0.36% | 1.45% | 1.09%MGK |
| LRCXLAM RESEARCH | 0.33% | 1.45% | 1.12%MGK |
| ORCLORACLE | 0.32% | 0.89% | 0.58%MGK |
| CRWDCROWDSTRIKE HOLDINGS | 0.31% | 1.04% | 0.73%MGK |
| GEVGE VERNOVA | 0.29% | 0.97% | 0.69%MGK |
| APHAMPHENOL | 0.25% | 0.84% | 0.59%MGK |
| WELLWELLTOWER OP | 0.25% | 0.71% | 0.46%MGK |
| SPCXSpace Exploration Technologies Class A | 0.24% | 0.49% | 0.26%MGK |
| KLACKLA | 0.24% | 0.99% | 0.75%MGK |
| ANETARISTA NETWORKS | 0.23% | 0.88% | 0.65%MGK |
| ISRGINTUITIVE SURGICAL | 0.23% | 0.67% | 0.44%MGK |
| TJXTJX Cos | 0.22% | 0.44% | 0.23%MGK |
| VRTXVERTEX PHARMACEUTICALS | 0.19% | 0.61% | 0.41%MGK |
| BABOEING | 0.19% | 0.63% | 0.44%MGK |
| BKNGBOOKING HOLDINGS | 0.18% | 0.55% | 0.37%MGK |
| SNDKSANDISK | 0.17% | 0.98% | 0.81%MGK |
| MRVLMARVELL TECHNOLOGY | 0.16% | 0.95% | 0.78%MGK |
| STXSEAGATE TECHNOLOGY HOLDINGS | 0.15% | 0.86% | 0.71%MGK |
| NOWSERVICENOW | 0.15% | 0.62% | 0.48%MGK |
| EQIXEQUINIX | 0.14% | 0.52% | 0.38%MGK |
| APPAPPLOVIN | 0.14% | 0.45% | 0.32%MGK |
| WDCWESTERN DIGITAL | 0.14% | 0.68% | 0.55%MGK |
| SNOWSnowflake | 0.13% | 0.39% | 0.26%MGK |
| MARMARRIOTT INTERNATIONAL | 0.12% | 0.35% | 0.23%MGK |
| CDNSCADENCE DESIGN SYS | 0.12% | 0.52% | 0.40%MGK |
| SNPSSYNOPSYS | 0.12% | 0.50% | 0.38%MGK |
| GLWCORNING | 0.12% | 0.58% | 0.46%MGK |
| CTASCINTAS NO 2 | 0.11% | 0.32% | 0.21%MGK |
| MCOMOODYS | 0.11% | 0.41% | 0.30%MGK |
| ECLECOLAB | 0.11% | 0.43% | 0.32%MGK |
| FTNTFORTINET | 0.11% | 0.42% | 0.32%MGK |
| ORLYOREILLY AUTOMOTIVE | 0.10% | 0.42% | 0.32%MGK |
| ABNBAIRBNB | 0.10% | 0.40% | 0.30%MGK |
| MNSTMONSTER BEVERAGE | 0.10% | 0.38% | 0.29%MGK |
| IBKRINTERACTIVE BROKERS GRO CL A | 0.05% | 0.32% | 0.27%MGK |
1–20 of 52
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 ITOT | In MGK |
|---|---|---|
Technology | 34.3% | 62.0% |
Communication Services | 8.2% | 15.5% |
Consumer Cyclical | 9.7% | 9.6% |
Financial Services | 12.8% | 4.1% |
Healthcare | 11.1% | 4.4% |
Industrials | 8.7% | 2.4% |
Consumer Defensive | 5.0% | 0.4% |
Energy | 3.7% | 0.0% |
Real Estate | 2.4% | 1.2% |
Basic Materials | 2.0% | 0.4% |
Utilities | 2.1% | 0.0% |
Weights are of each fund’s classified equity holdings.
ITOT
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.