Quest Diagnostics (DGX) Seasonality
Recurring seasonal patterns for DGX — the calendar windows where Quest Diagnostics 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.
DGX seasonality at a glance
Over the last 10 years, DGX's strongest seasonal window has been Apr 4 – Apr 24: it ended higher in 10 of 10 years (100% win rate) with an average return of +8.43% across a 20-day hold. On the weak side, DGX has historically declined between Sep 8 – Oct 8, falling in 8 of 10 years (average -2.93%).
In total, our analysis finds 619 recurring seasonal windows for Quest Diagnostics — 435 bullish and 184 bearish. The next high-win-rate window, Jul 28 – Aug 7, opens tomorrow. These figures describe historical behaviour only — not a forecast.
DGX'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 4d ago | Jun 23 – Jul 23 | 30d | +3.58% | 80% | +16.05% |
| Completedended 5d ago | Jul 12 – Jul 22 | 10d | +1.98% | 80% | +1.15% |
| Active10d left | Jul 27 – Aug 6 | 10d | +1.24% | 80% | — |
| Upcomingtomorrow | Jul 28 – Aug 7 | 10d | +1.36% | 80% | — |
| Upcomingin 43d | Sep 8 – Oct 8 | 30d | -2.93% | 80% | — |
| Upcomingin 44d | Sep 9 – Oct 9 | 30d | -2.45% | 80% | — |
| Upcomingin 52d | Sep 17 – Sep 27 | 10d | -1.52% | 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 DGX seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
DGX seasonality FAQ
What has historically been the best month to buy DGX stock?
Based on the last 10 years of price data, DGX's strongest seasonal window starts in April: Apr 4 to Apr 24, which ended higher in 10 of 10 years (100% win rate) with an average return of +8.43%. Past seasonal patterns do not guarantee future performance.
What is DGX's strongest seasonal pattern?
DGX's highest-win-rate pattern in our data is the Apr 4 – Apr 24 window (20-day hold): up in 10 of the last 10 years with an average move of +8.43%.
When has DGX historically performed worst?
DGX's weakest recurring window has been Sep 8 to Oct 8, declining in 8 of 10 years with an average return of -2.93%.
How reliable are DGX's seasonal patterns?
Each DGX pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. DGX currently shows 619 recurring windows (435 bullish, 184 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is DGX stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Quest Diagnostics's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where DGX 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.