QQQ vs VOO: 56% overlap
Invesco QQQ Trust and Vanguard S&P 500 ETF share 55.6% 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 1.4. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
QQQ and VOO hold 87 of the same securities. The ten contributing most to the overlap figure:
| Holding | in QQQ | in VOO | Δ |
|---|---|---|---|
| NVDA | 8.1% | 8.4% | 0.2% |
| AAPL | 8.1% | 7.4% | 0.7% |
| MSFT | 6.2% | 5.8% | 0.4% |
| AMZN | 4.3% | 3.7% | 0.6% |
| GOOGL | 3.0% | 3.1% | 0.0% |
| GOOG | 2.8% | 2.5% | 0.4% |
| AVGO | 2.4% | 2.5% | 0.1% |
| META | 3.1% | 2.4% | 0.6% |
| MU | 4.3% | 1.8% | 2.4% |
| TSLA | 3.1% | 1.5% | 1.6% |
Where QQQ and VOO 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 | VOO | Δ |
|---|---|---|---|
| Information Technology | 56.0% | 39.7% | +16.3pp |
| Financials | 0.2% | 11.3% | −11.1pp |
| Industrials | 3.3% | 8.2% | −4.8pp |
| Health Care | 4.5% | 9.3% | −4.7pp |
| Communication Services | 14.5% | 9.8% | +4.7pp |
| Energy | 0.5% | 3.4% | −2.9pp |
| Consumer Staples | 6.6% | 4.4% | +2.2pp |
| Consumer Discretionary | 10.7% | 8.6% | +2.1pp |
Δ is QQQ minus VOO, 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
6.9% of QQQ by weight, held in no part of VOO.
44.1% of VOO 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 | VOO | |
|---|---|---|
| Top 10 holdings | 46.7% | 39.1% |
| Positions held | 102 | 504 |
| Cost per $10,000 held, per year | $20 | $3 |
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 VOO overlap?
QQQ and VOO overlap 55.6% by portfolio weight — substantial duplication if you hold both. They share 87 holdings. The figure comes from current issuer holdings files (QQQ as of 2026-10-22, VOO as of 2026-09-30).
How is the overlap between QQQ and VOO 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 VOO 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 VOO?
That depends on your goals — we state facts, not advice. At 55.6% overlap, each fund still contributes meaningfully distinct exposure.
What does QQQ own that VOO doesn't?
QQQ holds 102 positions and VOO holds 504; 15 of QQQ's positions don't appear in VOO at all, and they are 6.9% of QQQ by weight.
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Related comparisons
Sources: issuer holdings files, QQQ as of 2026-10-22, VOO as of 2026-09-30. Weights are fractions of each fund. Diagnostics, not advice.