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.
Commonwealth Bank seasonality — common questions
What is Commonwealth Bank's best month historically?
Historically, October has been Commonwealth Bank's strongest month, averaging +3.92% with a 80% win rate over 15 years of data. September has been the weakest at -2.04%.
Is Commonwealth Bank seasonal?
Commonwealth Bank shows a measurable seasonal pattern: its best and worst months differ by 5.96 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 Commonwealth Bank historically perform in August?
Commonwealth Bank is currently in August, which has historically averaged -1.85% with a 25% win rate. That has historically been a seasonally weak window.
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