iShares Core S&P Total U.S. Stock Market ETF (ITOT) and Vanguard Morningstar Mega Cap Growth ETF (MGK) share 55 holdings, with roughly 45.4% of their portfolio weight overlapping.
Weight overlap
45.4%
Shared portfolio weight
Shared holdings
55
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 |
|---|---|---|---|
| NVDANVIDIA | 7.10% | 13.54% | 6.44%MGK |
| AAPLApple | 6.14% | 13.21% | 7.07%MGK |
| MSFTMicrosoft | 4.97% | 9.51% | 4.54%MGK |
| AMZNAMAZON.COM | 3.57% | 5.17% | 1.60%MGK |
| GOOGLAlphabet | 2.81% | 6.00% | 3.19%MGK |
| AVGOBROADCOM | 2.66% | 4.48% | 1.82%MGK |
| GOOGALPHABET CL C | 2.26% | 4.79% | 2.53%MGK |
| METAMETA PLATFORMS CLASS A | 1.73% | 4.10% | 2.37%MGK |
| LLYELI LILLY + | 1.26% | 3.31% | 2.05%MGK |
| TSLATESLA | 1.20% | 2.95% | 1.75%MGK |
| AMDADVANCED MICRO DEVICES | 1.07% | 2.66% | 1.59%MGK |
| VVisa | 0.82% | 1.97% | 1.15%MGK |
| INTCINTEL | 0.63% | 0.72% | 0.09%MGK |
| MAMASTERCARD A | 0.62% | 1.67% | 1.05%MGK |
| AMATAPPLIED MATERIALS | 0.56% | 0.81% | 0.25%MGK |
| LRCXLAM RESEARCH | 0.51% | 1.32% | 0.81%MGK |
| PLTRPALANTIR TECHNOLOGIES A | 0.48% | 1.04% | 0.56%MGK |
| NFLXNETFLIX | 0.42% | 1.14% | 0.72%MGK |
| PANWPALO ALTO NETWORKS | 0.39% | 1.09% | 0.70%MGK |
| GEVGE VERNOVA | 0.36% | 1.03% | 0.67%MGK |
| KLACKLA | 0.34% | 0.91% | 0.57%MGK |
| ORCLORACLE | 0.33% | 0.85% | 0.52%MGK |
| APHAMPHENOL CL A | 0.28% | 0.82% | 0.54%MGK |
| CRWDCROWDSTRIKE HOLDINGS A | 0.28% | 0.80% | 0.52%MGK |
| STXSEAGATE TECHNOLOGY HOLDINGS | 0.26% | 0.46% | 0.20%MGK |
| MRVLMARVELL TECHNOLOGY | 0.25% | 0.66% | 0.41%MGK |
| SNDKSANDISK | 0.25% | 0.69% | 0.44%MGK |
| BABOEING | 0.24% | 0.73% | 0.49%MGK |
| TJXTJX Cos | 0.24% | 0.74% | 0.50%MGK |
| WELLWELLTOWER | 0.22% | 0.75% | 0.53%MGK |
| BKNGBOOKING HOLDINGS | 0.21% | 0.69% | 0.48%MGK |
| WDCWESTERN DIGITAL | 0.21% | 0.45% | 0.24%MGK |
| UBERUBER TECHNOLOGIES | 0.19% | 0.42% | 0.23%MGK |
| ISRGINTUITIVE SURGICAL | 0.18% | 0.57% | 0.39%MGK |
| GLWCORNING | 0.16% | 0.49% | 0.33%MGK |
| NOWSERVICENOW | 0.16% | 0.59% | 0.43%MGK |
| VRTXVERTEX PHARMACEUTICALS | 0.16% | 0.58% | 0.42%MGK |
| SNOWSnowflake | 0.15% | 0.39% | 0.24%MGK |
| EQIXEQUINIX | 0.14% | 0.50% | 0.36%MGK |
| FTNTFORTINET | 0.13% | 0.37% | 0.24%MGK |
| APPAPPLOVIN CLASS A | 0.12% | 0.51% | 0.39%MGK |
| CDNSCADENCE DESIGN SYS | 0.12% | 0.47% | 0.35%MGK |
| INTUINTUIT | 0.12% | 0.36% | 0.24%MGK |
| BSXBOSTON SCIENTIFIC | 0.10% | 0.31% | 0.21%MGK |
| ECLECOLAB | 0.10% | 0.42% | 0.32%MGK |
| HLTHILTON WORLDWIDE HOLDINGS IN | 0.10% | 0.29% | 0.19%MGK |
| MARMARRIOTT INTERNATIONAL CL A | 0.10% | 0.43% | 0.33%MGK |
| ORLYO REILLY AUTOMOTIVE | 0.10% | 0.43% | 0.33%MGK |
| SNPSSYNOPSYS | 0.10% | 0.40% | 0.30%MGK |
| CTASCINTAS | 0.09% | 0.34% | 0.25%MGK |
| MCOMOODY S | 0.09% | 0.43% | 0.34%MGK |
| MNSTMONSTER BEVERAGE | 0.09% | 0.41% | 0.32%MGK |
| SPCXSpace Exploration Technologies Class A | 0.09% | 0.31% | 0.22%MGK |
| ABNBAIRBNB CLASS A | 0.08% | 0.40% | 0.32%MGK |
| IBKRINTERACTIVE BROKERS GRO CL A | 0.05% | 0.29% | 0.24%MGK |
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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 | 36.7% | 58.6% |
Communication Services | 9.1% | 16.6% |
Consumer Cyclical | 9.4% | 11.1% |
Financial Services | 12.3% | 4.4% |
Healthcare | 9.3% | 4.8% |
Industrials | 9.4% | 2.4% |
Consumer Defensive | 4.3% | 0.4% |
Real Estate | 2.2% | 1.3% |
Energy | 3.4% | 0.0% |
Basic Materials | 1.8% | 0.4% |
Utilities | 2.0% | 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.