Overlap · from SEC filings
VGT vs VUG: what actually overlaps
VGT and VUG: 55.65% of a dollar ends up in the same companies either way (SEC Form N-PORT, 2026-05-31 and 2026-06-30), across 51 securities the two funds both hold. Every free comparison tool can list the tickers in common; this weights them, which is the part that decides whether owning both changes anything.
The short version
Held alone, VGT behaves like 15.1 equally weighted positions and VUG like 19.8. Held together in equal size they behave like 18.5 — less diversified than holding VUG on its own. The two funds hold 51 of the same securities, 55.65% of a dollar by weight, so the pair buys those companies twice.
Overlap here is the sum, over securities both funds hold, of the smaller of the two weights: the share of a dollar that sits in the same company either way. Matching is on CUSIP. Figures are as of each fund's own reporting date (2026-05-31 and 2026-06-30), which do not always align.
Not 50/50, or holding a third fund alongside these two? The portfolio calculator runs this same math for any weights, across up to 12 funds.
Side by side
as filed| VGT | VUG | |
|---|---|---|
| Assets | $172B | $380B |
| Holdings | 306 | 148 |
| Effective holdings | 15.1 | 19.8 |
| Top ten weight | 59.38% | 60.41% |
| Largest position | 16.83% | 12.62% |
| Priced at market (Level 1) | 100% | 100% |
| Reporting date | 2026-05-31 | 2026-06-30 |
Where the overlap actually is
51The ten shared positions that account for the most of it, with what each fund holds of its own. Shared is the lesser of the two — the part that is held in common either way. Where the two columns diverge, one fund is making a larger bet on that company than the other, and holding both does not average it away.
| Company | VGT | VUG | Shared |
|---|---|---|---|
| NVIDIA Corp | 16.828% | 12.623% | 12.623% |
| Apple Inc | 14.574% | 11.663% | 11.663% |
| Microsoft Corp | 9.46% | 7.611% | 7.611% |
| Broadcom Inc | 4.208% | 4.281% | 4.208% |
| Advanced Micro Devices Inc | 3.21% | 2.616% | 2.616% |
| Lam Research Corp | 1.559% | 1.505% | 1.505% |
| Applied Materials Inc | 1.396% | 1.594% | 1.396% |
| KLA Corp | 1.001% | 1.102% | 1.001% |
| Sandisk Corp/DE | 0.983% | 0.943% | 0.943% |
| Intel Corp | 2.032% | 0.789% | 0.789% |
What the difference is made of
26.73% · 43.91%26.73% of VGT sits in companies VUG does not hold at all, and 43.91% of VUG in companies VGT does not hold. The largest of each, by weight in its own fund:
- Micron Technology Inc
- Cisco Systems Inc
- QUALCOMM Inc
- International Business Machines Corp
- Analog Devices Inc
- Alphabet Inc
- Alphabet Inc
- Amazon.com Inc
- Meta Platforms Inc
- Tesla Inc
What each fund did last quarter
Each fund's newest filing against its previous one. A pair whose overlap is rising or falling does so because of these moves; the figures are the same ones on each fund's page and in its feed.
Related comparisons
8Other pairs involving VGT or VUG, ordered by how much they overlap.
| Pair | Overlap | Combined effective |
|---|---|---|
| VGT vs XLK | 78.84% | 15.9 |
| SCHG vs VUG | 78.1% | 21.7 |
| QQQM vs VUG | 62.67% | 26.4 |
| QQQ vs VUG | 59.22% | 27.7 |
| VOO vs VUG | 57.49% | 31 |
| IVV vs VUG | 56.89% | 31 |
| VUG vs XLK | 54.44% | 19.6 |
| QQQM vs VGT | 53.73% | 23.4 |
Sources and limits
Computed from SEC Form N-PORT (NPORT-P), the portfolio report every registered US fund files. Positions below 0.001% of net assets are dropped; weights are normalised to each filing's own total.
Unit investment trusts including SPY and DIA do not file N-PORT, so no overlap can be computed for them. Where a comparison is missing from this site, that is usually why rather than an oversight.
Overlap says what is held in common, not what will move together. Two funds with no shared holdings can still fall together, and the effective holding count takes no account of correlation. All 275 pairs are in the concentration dataset, and every fund's own history is on its fund page.