iShares Biotechnology ETF (IBB) Seasonality
Recurring seasonal patterns for IBB — the calendar windows where iShares Biotechnology ETF 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.
IBB's strongest seasonal patterns
| Seasonal window | Direction | Avg return | Win rate | Hold |
|---|---|---|---|---|
| Jun 16 – Jul 16 | Bullish | +5.39% | 90% | 30d |
| Oct 31 – Nov 30 | Bullish | +5.37% | 90% | 30d |
| Jun 28 – Jul 28 | Bullish | +4.68% | 90% | 30d |
| Jun 18 – Jul 9 | Bullish | +4.67% | 90% | 21d |
| Jun 11 – Jul 11 | Bullish | +4.64% | 90% | 30d |
| Mar 2 – Mar 23 | Bearish | -4.61% | 90% | 21d |
| Jun 12 – Jul 12 | Bullish | +4.46% | 90% | 30d |
| Feb 21 – Mar 23 | Bearish | -4.44% | 90% | 30d |
| Jun 29 – Jul 29 | Bullish | +4.24% | 90% | 30d |
| Jun 17 – Jul 8 | Bullish | +4.17% | 90% | 21d |
| Jun 21 – Jul 21 | Bullish | +4.09% | 90% | 30d |
| Jun 26 – Jul 26 | Bullish | +4.07% | 90% | 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 IBB seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
What is IBB stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing iShares Biotechnology ETF's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where IBB 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.