Comcast (CMCSA) Seasonality
Recurring seasonal patterns for CMCSA — the calendar windows where Comcast 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.
CMCSA seasonality at a glance
Over the last 10 years, CMCSA's strongest seasonal window has been Jun 23 – Jul 23: it ended higher in 10 of 10 years (100% win rate) with an average return of +4.96% across a 30-day hold. On the weak side, CMCSA has historically declined between Sep 15 – Oct 15, falling in 9 of 10 years (average -3.14%).
In total, our analysis finds 593 recurring seasonal windows for Comcast — 342 bullish and 251 bearish. The next high-win-rate window, Aug 1 – Aug 21, opens in 5 days. These figures describe historical behaviour only — not a forecast.
CMCSA'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 5d ago | Jun 22 – Jul 22 | 30d | +4.64% | 90% | +6.81% |
| Completedended 6d ago | Jul 1 – Jul 21 | 20d | +3.38% | 90% | +0.34% |
| Upcomingin 5d | Aug 1 – Aug 21 | 20d | +1.16% | 80% | — |
| Upcomingin 7d | Aug 3 – Aug 13 | 10d | +1.37% | 80% | — |
| Upcomingin 9d | Aug 5 – Aug 15 | 10d | +2.54% | 90% | — |
| Upcomingin 9d | Aug 5 – Aug 25 | 20d | +1.44% | 80% | — |
| Upcomingin 10d | Aug 6 – Aug 16 | 10d | +2.53% | 90% | — |
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 CMCSA seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
CMCSA seasonality FAQ
What has historically been the best month to buy CMCSA stock?
Based on the last 10 years of price data, CMCSA's strongest seasonal window starts in June: Jun 23 to Jul 23, which ended higher in 10 of 10 years (100% win rate) with an average return of +4.96%. Past seasonal patterns do not guarantee future performance.
What is CMCSA's strongest seasonal pattern?
CMCSA's highest-win-rate pattern in our data is the Jun 23 – Jul 23 window (30-day hold): up in 10 of the last 10 years with an average move of +4.96%.
When has CMCSA historically performed worst?
CMCSA's weakest recurring window has been Sep 15 to Oct 15, declining in 9 of 10 years with an average return of -3.14%.
How reliable are CMCSA's seasonal patterns?
Each CMCSA pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. CMCSA currently shows 593 recurring windows (342 bullish, 251 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is CMCSA stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Comcast's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where CMCSA 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.