QQQ vs XBI: Holdings Overlap
QQQInvesco QQQ Trust, Series 1
Invesco · 101 holdings · $479.2B · as of 2026-03-31
XBIState Street® SPDR® S&P® Biotech ETF
State Street (SPDR) · 149 holdings · $10.0B · as of 2026-08-06
Holdings snapshots are 128 days apart (QQQ: 2026-03-31, XBI: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are QQQ and XBI?
Invesco QQQ Trust, Series 1 (QQQ, by Invesco) holds 101 positions; State Street® SPDR® S&P® Biotech ETF (XBI, by State Street (SPDR)) holds 149. They have 6 holdings in common, and by portfolio weight the two funds are 3.6% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 6QQQ holds 101 · XBI holds 149
- Weight in Shared Holdings
- QQQ 4%·XBI 7%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in QQQ
95 of 101 positions (96.3% of the fund) are not held by XBI. Showing the top 30 by weight.
Only in XBI
143 of 149 positions (93.4% of the fund) are not held by QQQ. Showing the top 30 by weight.
Sector Breakdown
| Sector | QQQ | XBI |
|---|---|---|
| Health Care | 5.1% | 95.5% |
| Information Technology | 49.7% | 0.0% |
| Communication Services | 16.0% | 0.0% |
| Consumer Discretionary | 12.6% | 0.0% |
| Consumer Staples | 8.5% | 0.0% |
| Other Sectors | 8.0% | 0.0% |
| Unclassified | 0.0% | 4.6% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (0% of QQQ, 5% of XBI).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| QQQ | +1.9% | +18.0% | +27.6% | +25.2% | +15.2% | +20.8% | 0.42% |
| XBI | -4.0% | +29.2% | +85.3% | +26.3% | +4.5% | +9.5% | 0.36% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in QQQ vs XBI →
Shared Holdings(6)
The top 6 shared positions account for 100% of the overlap, led by AMGN, GILD and VRTX.
 AMGNAmgen Inc. COM | 1.07% | 1.16% | 1.07% |
|---|---|---|---|
 GILDGilead Sciences Inc. COM | 0.98% | 1.04% | 0.98% |
 VRTXVertex Pharmaceuticals Incorporated COM | 0.64% | 1.07% | 0.64% |
 REGNRegeneron Pharmaceuticals, Inc. COM | 0.45% | 1.24% | 0.45% |
 ALNYAlnylam Pharmaceuticals Inc. COM | 0.25% | 0.72% | 0.25% |
 INSMInsmed Inc COM PAR $.01 | 0.20% | 1.39% | 0.20% |
Frequently Asked Questions
How much do QQQ and XBI overlap?
QQQ and XBI overlap by 3.6% of portfolio weight. They share 6 holdings (QQQ holds 101 positions and XBI holds 149), based on each fund's latest SEC-reported holdings.
Is it redundant to own both QQQ and XBI?
The two portfolios are 3.6% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of QQQ and XBI?
The largest positions held by both funds are AMGN, GILD, VRTX, REGN and ALNY. Together the top 6 shared positions account for 100% of the total overlap.
What does QQQ own that XBI doesn't?
95 positions (96.3% of QQQ) are unique to QQQ, led by NVDA, AAPL and MSFT. In the other direction, 143 positions (93.4% of XBI) are unique to XBI.