QQQ vs VGT vs XLK: 1.7 Effective Funds
Held in equal weight, QQQ, VGT, XLK behave like 1.7 funds rather than 3. Every figure below is computed from the funds' current published holdings.
Three tickers, and the diversification of 1.7. Three funds sharing nothing would score 3.0; three identical funds score 1.0.
How the three compare
Where the duplication is
The combined figure above hides which pair is responsible. Each row is the overlap between two of the three, computed as Σ min(wA, wB).
| Pair | Overlap | |
|---|---|---|
| QQQ vs VGT | 56.0% | |
| QQQ vs XLK | 56.3% | |
| VGT vs XLK | 82.6% |
The most duplicated pair is VGT and XLK at 82.6%.
Held by all three
The ten largest of the positions that appear in QQQ, VGT, XLK together — 54.8% of a portfolio split equally between them, by the same min-sum rule.
| Holding | Smallest of the three weights |
|---|---|
| NVDA | 8.31% |
| AAPL | 7.78% |
| MSFT | 4.67% |
| MU | 4.29% |
| AMD | 3.65% |
| AVGO | 3.06% |
| INTC | 2.29% |
| AMAT | 2.03% |
| CSCO | 1.82% |
| LRCX | 1.82% |
Frequently asked
How much do QQQ, VGT, XLK overlap?
Held in equal weight, QQQ, VGT, XLK behave like 1.7 funds rather than 3. QQQ and VGT overlap 56.0%; QQQ and XLK overlap 56.3%; VGT and XLK overlap 82.6%. Each figure is the sum of the smaller weight in each fund over every holding both own.
Which two of QQQ, VGT, XLK are most alike?
VGT and XLK, at 82.6% by weight. That pair contributes most of the duplication in the combined figure above.
What does "1.7 Effective Funds" mean?
It is the number of genuinely independent funds this combination behaves like. Three funds sharing no holdings would score 3.0; three identical funds score 1.0. It is computed from the pairwise overlaps above, weighting each fund equally, and it is a measurement rather than a target — what counts as enough depends on what you were trying to do.
These are three funds. How many do you actually hold?
This page assumes an equal split between QQQ, VGT, XLK. Paste your real holdings — every account, in the proportions you actually own them — for your own Effective Funds number, the companies underneath, and what else is duplicated. Free, no account, nothing stored.
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Sources: issuer holdings files, QQQ as of 2026-07-23, VGT as of 2026-06-30, XLK as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.