Portland General Electric (POR) Seasonality
Recurring seasonal patterns for POR — the calendar windows where Portland General Electric 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.
POR seasonality at a glance
Over the last 10 years, POR's strongest seasonal window has been Mar 21 – Mar 31: it ended higher in 10 of 10 years (100% win rate) with an average return of +3.71% across a 10-day hold. On the weak side, POR has historically declined between Sep 3 – Oct 3, falling in 9 of 10 years (average -3.98%).
In total, our analysis finds 581 recurring seasonal windows for Portland General Electric — 379 bullish and 202 bearish. The next high-win-rate window, Sep 30 – Oct 30, opens in 19 days. These figures describe historical behaviour only — not a forecast.
POR'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 2d ago | Aug 20 – Sep 9 | 20d | -1.12% | 80% | -2.59% |
| Completedended 26d ago | Aug 6 – Aug 16 | 10d | +1.08% | 80% | +4.57% |
| Upcomingin 19d | Sep 30 – Oct 30 | 30d | +2.68% | 80% | — |
| Upcomingin 21d | Oct 2 – Oct 22 | 20d | +2.28% | 80% | — |
| Upcomingin 25d | Oct 6 – Nov 5 | 30d | +3.56% | 80% | — |
| Upcomingin 26d | Oct 7 – Nov 6 | 30d | +4.08% | 90% | — |
| Upcomingin 27d | Oct 8 – Nov 7 | 30d | +3.72% | 80% | — |
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 POR seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
POR seasonality FAQ
What has historically been the best month to buy POR stock?
Based on the last 10 years of price data, POR's strongest seasonal window starts in March: Mar 21 to Mar 31, which ended higher in 10 of 10 years (100% win rate) with an average return of +3.71%. Past seasonal patterns do not guarantee future performance.
What is POR's strongest seasonal pattern?
POR's highest-win-rate pattern in our data is the Mar 21 – Mar 31 window (10-day hold): up in 10 of the last 10 years with an average move of +3.71%.
When has POR historically performed worst?
POR's weakest recurring window has been Sep 3 to Oct 3, declining in 9 of 10 years with an average return of -3.98%.
How reliable are POR's seasonal patterns?
Each POR pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. POR currently shows 581 recurring windows (379 bullish, 202 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is POR stock seasonality?
Seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Portland General Electric's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where POR 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.