QQQ vs XLU: 1% overlap
Invesco QQQ Trust and Utilities Select Sector SPDR Fund share 1.4% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
You would hold two tickers and get the diversification of 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
QQQ and XLU hold 5 of the same securities. The ten contributing most to the overlap figure:
| Holding | in QQQ | in XLU | Δ |
|---|---|---|---|
| CEG | 0.5% | 6.1% | 5.6% |
| AEP | 0.3% | 5.1% | 4.7% |
| XEL | 0.2% | 3.5% | 3.3% |
| EXC | 0.2% | 3.3% | 3.1% |
| CASH | 0.1% | 0.3% | 0.2% |
Where QQQ and XLU differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | QQQ | XLU | Δ |
|---|---|---|---|
| Utilities | 1.2% | 99.7% | −98.4pp |
| Information Technology | 59.1% | 0.0% | +59.1pp |
| Communication Services | 13.1% | 0.0% | +13.1pp |
| Consumer Discretionary | 10.0% | 0.0% | +10.0pp |
| Consumer Staples | 6.4% | 0.0% | +6.4pp |
| Health Care | 3.6% | 0.0% | +3.6pp |
| Industrials | 3.5% | 0.0% | +3.5pp |
| Materials | 1.1% | 0.0% | +1.1pp |
Δ is QQQ minus XLU, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
98.6% of QQQ by weight, held in no part of XLU.
81.7% of XLU by weight, held in no part of QQQ.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| QQQ | XLU | |
|---|---|---|
| Top 10 holdings | 45.9% | 58.0% |
| Positions held | 104 | 33 |
| Cost per $10,000 held, per year | $20 | $8 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do QQQ and XLU overlap?
QQQ and XLU overlap 1.4% by portfolio weight — largely distinct portfolios. They share 5 holdings. The figure comes from current issuer holdings files (QQQ as of 2026-07-23, XLU as of 2026-07-23).
How is the overlap between QQQ and XLU calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If QQQ holds a stock at 6% and XLU holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both QQQ and XLU?
That depends on your goals — we state facts, not advice. At 1.4% overlap, each fund still contributes meaningfully distinct exposure.
What does QQQ own that XLU doesn't?
QQQ holds 104 positions and XLU holds 33; 99 of QQQ's positions don't appear in XLU at all, and they are 98.6% of QQQ by weight.
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Related comparisons
Sources: issuer holdings files, QQQ as of 2026-07-23, XLU as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.