QQQM vs VIMAX: 11% overlap
Invesco NASDAQ 100 ETF and Vanguard Mid-Cap Index Admiral share 10.8% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 4 months apart — QQQM as of 2026-02-28, the rest through 2026-06-30. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
You would hold two tickers and get the diversification of 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
QQQM and VIMAX hold 43 of the same securities. The ten contributing most to the overlap figure:
| Holding | in QQQM | in VIMAX | Δ |
|---|---|---|---|
| CEG | 0.6% | 0.8% | 0.1% |
| WDC | 0.5% | 1.1% | 0.5% |
| STX | 0.5% | 1.0% | 0.6% |
| DASH | 0.4% | 0.7% | 0.3% |
| WBD | 0.4% | 0.6% | 0.2% |
| AEP | 0.4% | 0.4% | 0.0% |
| ROST | 0.4% | 0.7% | 0.3% |
| PCAR | 0.4% | 0.6% | 0.3% |
| BKR | 0.3% | 0.5% | 0.2% |
| FTNT | 0.3% | 0.5% | 0.1% |
Where QQQM and VIMAX 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 | QQQM | VIMAX | Δ |
|---|---|---|---|
| Information Technology | 48.9% | 16.1% | +32.8pp |
| Industrials | 3.0% | 19.6% | −16.6pp |
| Financials | 0.2% | 14.0% | −13.8pp |
| Communication Services | 15.6% | 2.8% | +12.8pp |
| Utilities | 1.6% | 8.4% | −6.8pp |
| Energy | 0.6% | 7.3% | −6.7pp |
| Real Estate | 0.1% | 5.1% | −5.0pp |
| Consumer Staples | 8.5% | 4.9% | +3.7pp |
Δ is QQQM minus VIMAX, 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
88.3% of QQQM by weight, held in no part of VIMAX.
82.3% of VIMAX by weight, held in no part of QQQM.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| QQQM | VIMAX | |
|---|---|---|
| Top 10 holdings | 46.7% | 9.5% |
| Positions held | 103 | 283 |
| Cost per $10,000 held, per year | $15 | $5 |
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 QQQM and VIMAX overlap?
QQQM and VIMAX overlap 10.8% by portfolio weight — largely distinct portfolios. They share 43 holdings. The figure comes from current issuer holdings files (QQQM as of 2026-02-28, VIMAX as of 2026-06-30).
How is the overlap between QQQM and VIMAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If QQQM holds a stock at 6% and VIMAX 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 QQQM and VIMAX?
That depends on your goals — we state facts, not advice. At 10.8% overlap, each fund still contributes meaningfully distinct exposure.
What does QQQM own that VIMAX doesn't?
QQQM holds 103 positions and VIMAX holds 283; 59 of QQQM's positions don't appear in VIMAX at all, and they are 88.3% of QQQM by weight.
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Related comparisons
Sources: issuer holdings files, QQQM as of 2026-02-28, VIMAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.