American Funds Fundamental Investors A (ANCFX) Seasonality
Recurring seasonal patterns for ANCFX — the calendar windows where American Funds Fundamental Investors A has historically tended to rise or fall, with the win rate (how often it repeated) and average return for each, based on the last 10 years of price history.
ANCFX seasonality at a glance
Over the last 10 years, ANCFX's strongest seasonal window has been Oct 12 – Nov 11: it ended higher in 10 of 10 years (100% win rate) with an average return of +3.72% across a 30-day hold. On the weak side, ANCFX has historically declined between Feb 16 – Mar 8, falling in 7 of 10 years (average -2.57%).
In total, our analysis finds 507 recurring seasonal windows for American Funds Fundamental Investors A — 441 bullish and 66 bearish. The next high-win-rate window, Aug 3 – Sep 2, opens in 7 days. These figures describe historical behaviour only — not a forecast.
ANCFX's upcoming & recent seasonal patterns
Holding period:10-day20-day30-dayOrdered by season — windows opening soon first, plus a couple of recently completed high-performers. Holding-period colors help you compare durations at a glance.
| Status | Seasonal window | Hold | Avg return | Win rate | This year |
|---|---|---|---|---|---|
| Completedended 11d ago | Jun 26 – Jul 16 | 20d | +2.68% | 80% | +0.41% |
| Completedended 12d ago | Jul 5 – Jul 15 | 10d | +1.43% | 90% | +0.55% |
| Upcomingin 7d | Aug 3 – Sep 2 | 30d | +1.57% | 80% | — |
| Upcomingin 9d | Aug 5 – Sep 4 | 30d | +1.16% | 90% | — |
| Upcomingin 59d | Sep 24 – Oct 24 | 30d | +1.04% | 80% | — |
| Upcomingin 60d | Sep 25 – Oct 25 | 30d | +1.22% | 80% | — |
| Upcomingin 61d | Sep 26 – Oct 16 | 20d | +1.15% | 80% | — |
Win rate = how often the pattern repeated in the same direction. Average return = the mean move across all analysed years. Past performance does not guarantee future results.
Explore ANCFX seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
ANCFX seasonality FAQ
What has historically been the best month to buy ANCFX stock?
Based on the last 10 years of price data, ANCFX's strongest seasonal window starts in October: Oct 12 to Nov 11, which ended higher in 10 of 10 years (100% win rate) with an average return of +3.72%. Past seasonal patterns do not guarantee future performance.
What is ANCFX's strongest seasonal pattern?
ANCFX's highest-win-rate pattern in our data is the Oct 12 – Nov 11 window (30-day hold): up in 10 of the last 10 years with an average move of +3.72%.
When has ANCFX historically performed worst?
ANCFX's weakest recurring window has been Feb 16 to Mar 8, declining in 7 of 10 years with an average return of -2.57%.
How reliable are ANCFX's seasonal patterns?
Each ANCFX pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. ANCFX currently shows 507 recurring windows (441 bullish, 66 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is ANCFX stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing American Funds Fundamental Investors A's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where ANCFX has repeatedly risen (bullish) or fallen (bearish). Each pattern is scored by its win rate and average return so you can judge how reliable and how strong it has been.
Seasonality is one input among many — it works best alongside your own research and risk management. Learn more in our guide to seasonal analysis and the tutorials.