ANCFX vs QQQM: 33% overlap
American Funds Fundamental Investors A and Invesco NASDAQ 100 ETF share 33.0% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published 31 days apart — QQQM as of 2026-02-28, the rest through 2026-03-31. 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 1.7. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
ANCFX and QQQM hold 40 of the same securities. The ten contributing most to the overlap figure:
| Holding | in ANCFX | in QQQM | Δ |
|---|---|---|---|
| MSFT | 4.5% | 5.7% | 1.2% |
| NVDA | 3.6% | 8.4% | 4.8% |
| GOOG | 3.6% | 3.3% | 0.4% |
| AVGO | 5.9% | 2.9% | 3.0% |
| AMZN | 2.8% | 4.4% | 1.6% |
| META | 2.3% | 3.7% | 1.4% |
| MU | 2.1% | 2.5% | 0.4% |
| GOOGL | 1.6% | 3.5% | 1.9% |
| AAPL | 1.5% | 7.6% | 6.1% |
| KLAC | 1.2% | 1.1% | 0.1% |
Where ANCFX and QQQM 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 | ANCFX | QQQM | Δ |
|---|---|---|---|
| Information Technology | 27.8% | 48.9% | −21.1pp |
| Industrials | 12.0% | 3.0% | +9.0pp |
| Financials | 8.1% | 0.2% | +7.9pp |
| Communication Services | 9.0% | 15.6% | −6.7pp |
| Unclassified | 9.3% | 2.7% | +6.6pp |
| Consumer Discretionary | 8.9% | 11.9% | −3.1pp |
| Real Estate | 1.8% | 0.1% | +1.7pp |
| Energy | 2.3% | 0.6% | +1.7pp |
Δ is ANCFX minus QQQM, 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
60.8% of ANCFX by weight, held in no part of QQQM.
29.2% of QQQM by weight, held in no part of ANCFX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| ANCFX | QQQM | |
|---|---|---|
| Top 10 holdings | 34.1% | 46.7% |
| Positions held | 233 | 103 |
| Cost per $10,000 held, per year | $61 | $15 |
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 ANCFX and QQQM overlap?
ANCFX and QQQM overlap 33.0% by portfolio weight — moderate overlap. They share 40 holdings. The figure comes from current issuer holdings files (ANCFX as of 2026-03-31, QQQM as of 2026-02-28).
How is the overlap between ANCFX and QQQM calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If ANCFX holds a stock at 6% and QQQM 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 ANCFX and QQQM?
That depends on your goals — we state facts, not advice. At 33.0% overlap, each fund still contributes meaningfully distinct exposure.
What does ANCFX own that QQQM doesn't?
ANCFX holds 233 positions and QQQM holds 103; 192 of ANCFX's positions don't appear in QQQM at all, and they are 60.8% of ANCFX by weight.
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Related comparisons
Sources: issuer holdings files, ANCFX as of 2026-03-31, QQQM as of 2026-02-28. Weights are fractions of each fund. Diagnostics, not advice.