AGTHX vs ANCFX: 57% overlap
American Funds Growth Fund of America A and American Funds Fundamental Investors A share 56.8% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published 31 days apart — AGTHX 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 1.4. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
AGTHX and ANCFX hold 140 of the same securities. The ten contributing most to the overlap figure:
| Holding | in AGTHX | in ANCFX | Δ |
|---|---|---|---|
| AVGO | 4.3% | 5.9% | 1.7% |
| MSFT | 4.0% | 4.5% | 0.5% |
| NVDA | 6.1% | 3.6% | 2.5% |
| GOOG | 2.9% | 3.6% | 0.7% |
| 14020B | 3.5% | 2.8% | 0.6% |
| AMZN | 2.9% | 2.8% | 0.1% |
| META | 4.2% | 2.3% | 1.9% |
| 2330 | 2.3% | 2.2% | 0.1% |
| MU | 1.8% | 2.1% | 0.4% |
| GOOGL | 2.9% | 1.6% | 1.3% |
Where AGTHX and ANCFX 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 | AGTHX | ANCFX | Δ |
|---|---|---|---|
| Consumer Staples | 2.4% | 9.4% | −7.0pp |
| Health Care | 11.0% | 6.2% | +4.8pp |
| Communication Services | 13.2% | 9.0% | +4.3pp |
| Consumer Discretionary | 12.7% | 8.9% | +3.8pp |
| Information Technology | 30.6% | 27.8% | +2.7pp |
| Industrials | 9.8% | 12.0% | −2.2pp |
| Unclassified | 7.6% | 9.3% | −1.7pp |
| Financials | 6.5% | 8.1% | −1.6pp |
Δ is AGTHX minus ANCFX, 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
16.5% of AGTHX by weight, held in no part of ANCFX.
18.7% of ANCFX by weight, held in no part of AGTHX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| AGTHX | ANCFX | |
|---|---|---|
| Top 10 holdings | 36.7% | 34.1% |
| Positions held | 309 | 233 |
| Cost per $10,000 held, per year | $61 | $61 |
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 AGTHX and ANCFX overlap?
AGTHX and ANCFX overlap 56.8% by portfolio weight — substantial duplication if you hold both. They share 140 holdings. The figure comes from current issuer holdings files (AGTHX as of 2026-02-28, ANCFX as of 2026-03-31).
How is the overlap between AGTHX and ANCFX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If AGTHX holds a stock at 6% and ANCFX 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 AGTHX and ANCFX?
That depends on your goals — we state facts, not advice. At 56.8% overlap, each fund still contributes meaningfully distinct exposure.
What does AGTHX own that ANCFX doesn't?
AGTHX holds 309 positions and ANCFX holds 233; 168 of AGTHX's positions don't appear in ANCFX at all, and they are 16.5% of AGTHX by weight.
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Related comparisons
Sources: issuer holdings files, AGTHX as of 2026-02-28, ANCFX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.