QQQ vs XBI ETF holdings comparison
Invesco QQQ Trust (QQQ) · SPDR S&P Biotech ETF (XBI)
QQQ and XBI overlap by 2.5% by portfolio weight. The remaining 97.5 percentage points are not counted as shared holdings weight by this calculation. They share 5 stocks; the largest shared position is Amgen Inc. (AMGN), contributing 0.85% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
QQQ and XBI share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in QQQ | in XBI |
|---|---|---|---|
| Amgen Inc. | AMGN | 0.85% | 1.58% |
| Gilead Sciences, Inc. | GILD | 0.68% | 1.53% |
| Vertex Pharmaceuticals Inc. | VRTX | 0.55% | 1.46% |
| Regeneron Pharmaceuticals, Inc. | REGN | 0.28% | 1.39% |
| Alnylam Pharmaceuticals, Inc. | ALNY | 0.17% | 1.32% |
Holdings only in QQQ or XBI
QQQ has 97 fund-only positions representing approximately 97.4 percentage points of reported exposure; XBI has 152 fund-only positions representing approximately 92.6 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in QQQ
| Company | Ticker | Weight |
|---|---|---|
| NVIDIA Corp. | NVDA | 7.60% |
| Apple Inc. | AAPL | 6.67% |
| Micron Technology, Inc. | MU | 5.64% |
| Microsoft Corp. | MSFT | 4.35% |
| Advanced Micro Devices, Inc. | AMD | 4.10% |
| Amazon.com, Inc. | AMZN | 4.02% |
| Tesla, Inc. | TSLA | 3.30% |
| Alphabet Inc. | GOOGL | 3.27% |
| Intel Corp. | INTC | 3.04% |
| Alphabet Inc. | GOOG | 3.02% |
Largest positions only in XBI
| Company | Ticker | Weight |
|---|---|---|
| Moderna Inc | MRNA | 2.20% |
| Twist Bioscience Corp | TWST | 1.84% |
| Natera Inc | NTRA | 1.79% |
| Abbvie Inc | ABBV | 1.65% |
| United Therapeutics Corp | UTHR | 1.59% |
| Biogen Inc | BIIB | 1.57% |
| Halozyme Therapeutics Inc | HALO | 1.55% |
| Iovance Biotherapeutics Inc | IOVA | 1.54% |
| Exelixis Inc | EXEL | 1.53% |
| Tg Therapeutics Inc | TGTX | 1.48% |
FAQ
How much do QQQ and XBI overlap?
QQQ and XBI have 2.5% overlap by weight, sharing 5 equity positions (out of 102 in QQQ and 157 in XBI). The official holdings files used are dated 2026-06-30 for QQQ and 2026-10-08 for XBI.
What does 2.5% overlap mean?
QQQ and XBI share a smaller portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "low holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do QQQ and XBI both hold?
The largest shared positions are Amgen Inc., Gilead Sciences, Inc., Vertex Pharmaceuticals Inc., Regeneron Pharmaceuticals, Inc., Alnylam Pharmaceuticals, Inc.. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between QQQ and XBI?
QQQ has 97 positions not found in XBI, while XBI has 152 positions not found in QQQ. The largest fund-only positions and their weights are shown on this page.