GSK (GSK.L) Seasonality
Recurring seasonal patterns for GSK.L — the calendar windows where GSK has historically tended to rise or fall, with the win rate (how often it repeated) and average return for each, based on up to 10 years of price history.
GSK.L's strongest seasonal patterns
| Seasonal window | Direction | Avg return | Win rate | Hold |
|---|---|---|---|---|
| Dec 18 – Jan 17 | Bullish | +3.52% | 100% | 30d |
| Dec 16 – Jan 15 | Bullish | +3.50% | 100% | 30d |
| Dec 17 – Jan 16 | Bullish | +3.11% | 100% | 30d |
| Dec 7 – Jan 6 | Bullish | +3.28% | 90% | 30d |
| Dec 16 – Jan 6 | Bullish | +2.89% | 90% | 21d |
| Nov 9 – Nov 19 | Bearish | -2.21% | 90% | 10d |
| Nov 18 – Nov 28 | Bullish | +1.20% | 90% | 10d |
| Dec 6 – Jan 5 | Bullish | +4.27% | 80% | 30d |
| Dec 5 – Jan 4 | Bullish | +3.66% | 80% | 30d |
| Dec 14 – Jan 13 | Bullish | +3.51% | 80% | 30d |
| Apr 4 – May 4 | Bullish | +3.27% | 80% | 30d |
| Feb 28 – Mar 30 | Bullish | +3.19% | 80% | 30d |
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 GSK.L seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
What is GSK.L stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing GSK's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where GSK.L 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.