Guardfolio Research · ETF Overlap
VGT vs QQQ Overlap: 29% of Weight in the Same Tech Stocks
VGT (Vanguard Information Technology) and QQQ (Nasdaq-100) share 7 of their top 10 holdings — Apple, Microsoft, Nvidia, Broadcom, Adobe, AMD, and Salesforce. At a 50/50 allocation, these shared names account for 29% of the combined portfolio's weight. That's not sector diversification; it's mega-cap tech concentration by another name.
Overlap Summary
Bottom line
Adding VGT to QQQ (or vice versa) creates redundancy in mega-cap tech names, not diversification.
The Data
Exactly which stocks VGT and QQQ share
The table below shows the 7 holdings that appear in both funds' top 10, with each fund's weight. The combined effective weight in a 50/50 portfolio is shown in the final column.
| Stock | VGT weight | QQQ weight | 50/50 combined |
|---|---|---|---|
| Microsoft (MSFT) | 10.2% | 8.0% | 9.1% |
| Apple (AAPL) | 9.8% | 9.0% | 9.4% |
| Nvidia (NVDA) | 8.5% | 7.5% | 8.0% |
| Broadcom (AVGO) | 6.2% | 4.5% | 5.4% |
| Adobe (ADBE) | 4.1% | 2.8% | 3.5% |
| AMD (AMD) | 3.8% | 2.5% | 3.2% |
| Salesforce (CRM) | 3.2% | 1.9% | 2.6% |
| Total shared weight | 45.8% | 36.2% | 41.0% |
Weights are approximate and based on quarterly data. The 29% overlap figure represents the minimum shared weight (taking the lesser of each fund's weight per holding).
Key Distinction
VGT vs QQQ: What's actually different
Despite the overlap, VGT and QQQ have different mandates:
| VGT | QQQ | |
|---|---|---|
| What it tracks | Tech sector only (GICS classification) | Nasdaq-100 (all sectors, Nasdaq-listed) |
| Number of holdings | ~60 | ~100 |
| Sector concentration | 100% technology | ~60% tech + comms |
| Expense ratio | 0.10% | 0.20% |
| Top-10 weight | ~45% | ~50% |
Free Tool
Check VGT vs QQQ in the overlap tool
The Guardfolio ETF overlap checker lets you compare VGT and QQQ side by side — and see any other pair from the 22-ETF dataset. No signup needed for the two-fund comparison.
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