Guardfolio Research · ETF Overlap
VGT vs ITOT Overlap: 21.0% of Weight in Shared Holdings
VGT (Vanguard Information Technology) and ITOT (iShares Core S&P Total US Stock Market) overlap by 21.0% of weight through 4 shared top-10 holdings — including NVDA, AAPL, MSFT, AVGO. Here is exactly which stocks duplicate, the sector picture, and whether holding both concentrates or diversifies your portfolio.
Overlap Summary
Bottom line
VGT and ITOT share 21.0% of their top-10 weight across 4 common holdings. That is significant overlap: the funds reinforce the same bet, so combining them concentrates you more than it diversifies.
The Data
Exactly which stocks VGT and ITOT share
The table below shows every holding that appears in both funds' top 10, with each fund's weight and the shared (minimum) weight that counts toward overlap.
| Holding | VGT weight | ITOT weight | Shared (min) |
|---|---|---|---|
| NVIDIA Corp. (NVDA) | 18.60% | 7.91% | 7.91% |
| Apple Inc. (AAPL) | 14.82% | 6.04% | 6.04% |
| Microsoft Corp. (MSFT) | 10.02% | 4.20% | 4.20% |
| Broadcom Inc. (AVGO) | 4.60% | 2.88% | 2.88% |
| Total shared top-10 weight | 48.0% | 21.0% | 21.0% |
Weights are approximate, based on the most recent quarterly holdings. The 21.0% figure is the sum of the lesser of each fund's weight per shared holding (the conservative top-10 method).
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Sector Picture
VGT vs ITOT: sector exposure side by side
Two funds can share few holdings yet still concentrate the same sectors. Here is how the top sectors compare (32.0% combined sector overlap).
| Sector | VGT | ITOT |
|---|---|---|
| Technology | 100.0% | 32.2% |
| Financial Services | 0.0% | 12.8% |
| Consumer Discretionary | 0.0% | 10.5% |
| Industrials | 0.0% | 9.6% |
| Healthcare | 0.0% | 9.1% |
| Communication Services | 0.0% | 7.6% |
The Verdict
Should you hold both VGT and ITOT?
VGT and ITOT share 21.0% of their top-10 weight across 4 common holdings. That is significant overlap: the funds reinforce the same bet, so combining them concentrates you more than it diversifies. Worth knowing before you size both as core positions.
FAQ
VGT vs ITOT overlap: common questions
How much do VGT and ITOT overlap?
VGT (Vanguard Information Technology) and ITOT (iShares Core S&P Total US Stock Market) overlap by approximately 21.0% of weight based on their top-10 holdings, with 32.0% sector overlap. They share 4 top-10 holdings: NVDA, AAPL, MSFT, AVGO.
What stocks do VGT and ITOT both hold?
Both VGT and ITOT hold NVIDIA Corp (NVDA), Apple Inc (AAPL), Microsoft Corp (MSFT), Broadcom Inc (AVGO) among their top positions. These shared names account for the 21.0% weight overlap.
Is it worth holding both VGT and ITOT?
VGT and ITOT share 21.0% of their top-10 weight across 4 common holdings. That is significant overlap: the funds reinforce the same bet, so combining them concentrates you more than it diversifies. Worth knowing before you size both as core positions.
What is the difference between VGT and ITOT?
VGT is a technology-sector fund (US Sector – Technology, 0.10% expense ratio) and ITOT is a total US market fund (US Total Market, 0.03% expense ratio). VGT's top 10 is 59.8% of the fund; ITOT's is 35.2%.
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