Schwab International Index Fund (SWISX) Seasonality
Recurring seasonal patterns for SWISX — the calendar windows where Schwab International Index Fund 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.
SWISX's strongest seasonal patterns
| Seasonal window | Direction | Avg return | Win rate | Hold |
|---|---|---|---|---|
| Dec 20 – Dec 30 | Bullish | +1.06% | 100% | 10d |
| Dec 22 – Jan 1 | Bullish | +1.00% | 100% | 10d |
| Apr 4 – May 4 | Bullish | +2.93% | 90% | 30d |
| Jun 27 – Jul 27 | Bullish | +2.82% | 90% | 30d |
| Apr 6 – May 6 | Bullish | +2.64% | 90% | 30d |
| Dec 22 – Jan 12 | Bullish | +2.61% | 90% | 21d |
| Dec 20 – Jan 19 | Bullish | +2.48% | 90% | 30d |
| Dec 21 – Jan 11 | Bullish | +2.11% | 90% | 21d |
| Dec 20 – Jan 10 | Bullish | +2.11% | 90% | 21d |
| Jun 7 – Jun 17 | Bearish | -2.04% | 90% | 10d |
| Dec 19 – Jan 9 | Bullish | +1.99% | 90% | 21d |
| May 29 – Jun 8 | Bullish | +1.91% | 90% | 10d |
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 SWISX seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
What is SWISX stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Schwab International Index Fund's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where SWISX 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.