McKesson Corporation (MCK) Seasonality
Recurring seasonal patterns for MCK — the calendar windows where McKesson Corporation 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.
MCK seasonality at a glance
Over the last 10 years, MCK's strongest seasonal window has been May 3 – May 23: it ended higher in 10 of 10 years (100% win rate) with an average return of +6.64% across a 20-day hold. On the weak side, MCK has historically declined between Sep 23 – Oct 3, falling in 9 of 10 years (average -1.80%).
In total, our analysis finds 645 recurring seasonal windows for McKesson Corporation — 476 bullish and 169 bearish. The next high-win-rate window, Aug 3 – Aug 23, opens in 7 days. These figures describe historical behaviour only — not a forecast.
MCK'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 42d ago | May 26 – Jun 15 | 20d | +1.28% | 90% | +3.48% |
| Completedended 42d ago | May 16 – Jun 15 | 30d | +3.82% | 80% | +2.64% |
| Upcomingin 7d | Aug 3 – Aug 23 | 20d | -1.94% | 80% | — |
| Upcomingin 9d | Aug 5 – Sep 4 | 30d | -1.62% | 80% | — |
| Upcomingin 46d | Sep 11 – Sep 21 | 10d | -1.51% | 80% | — |
| Upcomingin 55d | Sep 20 – Oct 20 | 30d | +2.24% | 80% | — |
| Upcomingin 57d | Sep 22 – Oct 2 | 10d | -1.28% | 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 MCK seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
MCK seasonality FAQ
What has historically been the best month to buy MCK stock?
Based on the last 10 years of price data, MCK's strongest seasonal window starts in May: May 3 to May 23, which ended higher in 10 of 10 years (100% win rate) with an average return of +6.64%. Past seasonal patterns do not guarantee future performance.
What is MCK's strongest seasonal pattern?
MCK's highest-win-rate pattern in our data is the May 3 – May 23 window (20-day hold): up in 10 of the last 10 years with an average move of +6.64%.
When has MCK historically performed worst?
MCK's weakest recurring window has been Sep 23 to Oct 3, declining in 9 of 10 years with an average return of -1.80%.
How reliable are MCK's seasonal patterns?
Each MCK pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. MCK currently shows 645 recurring windows (476 bullish, 169 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is MCK stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing McKesson Corporation's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where MCK 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.