QQQ vs VB: 0% overlap
Invesco QQQ Trust and Vanguard Small-Cap ETF share 0.4% 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 VB hold 2 of the same securities. The ten contributing most to the overlap figure:
| Holding | in QQQ | in VB | Δ |
|---|---|---|---|
| ALAB | 0.3% | 0.4% | 0.2% |
| CASH | 0.1% | 1.7% | 1.6% |
Where QQQ and VB 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 | VB | Δ |
|---|---|---|---|
| Information Technology | 59.1% | 16.1% | +43.0pp |
| Industrials | 3.5% | 21.0% | −17.5pp |
| Financials | 0.2% | 12.7% | −12.5pp |
| Communication Services | 13.1% | 3.0% | +10.1pp |
| Health Care | 3.6% | 11.9% | −8.3pp |
| Real Estate | 0.0% | 7.1% | −7.1pp |
| Materials | 1.1% | 5.3% | −4.3pp |
| Energy | 0.5% | 3.7% | −3.2pp |
Δ is QQQ minus VB, 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
99.6% of QQQ by weight, held in no part of VB.
97.8% of VB 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 | VB | |
|---|---|---|
| Top 10 holdings | 45.9% | 5.6% |
| Positions held | 104 | 1,308 |
| 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 VB overlap?
QQQ and VB overlap 0.4% by portfolio weight — largely distinct portfolios. They share 2 holdings. The figure comes from current issuer holdings files (QQQ as of 2026-07-23, VB as of 2026-06-30).
How is the overlap between QQQ and VB 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 VB 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 VB?
That depends on your goals — we state facts, not advice. At 0.4% overlap, each fund still contributes meaningfully distinct exposure.
What does QQQ own that VB doesn't?
QQQ holds 104 positions and VB holds 1,308; 102 of QQQ's positions don't appear in VB at all, and they are 99.6% of QQQ by weight.
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Related comparisons
Sources: issuer holdings files, QQQ as of 2026-07-23, VB as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.