These figures are computed from 15 years of actual monthly closing prices. Past seasonal patterns are not a guarantee of future performance. See our methodology for how this is calculated, or visit the Academy to learn how to read seasonal data responsibly.
American Express seasonality — common questions
What is American Express's best month historically?
Historically, November has been American Express's strongest month, averaging +5.16% with a 73% win rate over 15 years of data. September has been the weakest at -1.56%.
Is American Express seasonal?
American Express shows a measurable seasonal pattern: its best and worst months differ by 6.72 percentage points on average. These figures come from 15 years of real monthly closing prices. Seasonality is a historical tendency, not a prediction.
How does American Express historically perform in July?
American Express is currently in July, which has historically averaged +0.90% with a 50% win rate. That is a historically neutral window.
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