Zscaler (ZS) seasonality heatmap
Returns across monthly, quarterly, and yearly periods. Cell color encodes signed magnitude; the scale auto-fits each table.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -11.1% | -26.5% | -4.6% | -6.9% | +6.9% | -7.3% | — | — | — | — | — | — |
| 2025 | +12.3% | -3.1% | +1.1% | +14.0% | +21.9% | +13.9% | -9.0% | -3.0% | +8.2% | +10.5% | -24.1% | -10.6% |
| 2024 | +6.4% | +2.7% | -20.4% | -10.2% | -1.7% | +13.1% | -6.7% | +11.5% | -14.5% | +5.8% | +14.3% | -12.7% |
| 2023 | +11.0% | +5.6% | -10.9% | -22.9% | +50.4% | +8.0% | +9.6% | -2.7% | -0.3% | +2.0% | +24.5% | +12.2% |
| 2022 | -20.0% | -7.0% | +0.9% | -16.0% | -24.5% | -2.3% | +3.7% | +2.7% | +3.2% | -6.2% | -13.4% | -16.1% |
| 2021 | -0.0% | +2.7% | -16.3% | +9.3% | +3.5% | +11.3% | +9.2% | +18.0% | -5.8% | +21.6% | +8.8% | -7.4% |
| 2020 | +20.6% | -7.3% | +17.1% | +10.2% | +46.2% | +11.6% | +18.6% | +10.4% | -1.8% | -3.5% | +14.7% | +28.2% |
| 2019 | +23.4% | +2.7% | +42.8% | -3.7% | +0.5% | +11.7% | +10.0% | -18.4% | -31.2% | -6.9% | +18.5% | -10.8% |
| 2018 | — | — | — | +6.5% | -12.1% | +36.1% | -1.2% | +21.2% | -4.7% | -11.0% | +8.2% | -0.1% |
| Avg | +5.3% | -3.8% | +1.2% | -2.2% | +10.1% | +12.9% | +4.3% | +5.0% | -5.9% | +1.5% | +6.4% | -2.2% |
| Median | +8.7% | -0.2% | -1.8% | -3.7% | +3.5% | +11.7% | +6.4% | +6.5% | -3.3% | -0.8% | +11.5% | -9.0% |
| Last 5Y Avg | -0.3% | -5.7% | -6.8% | -8.4% | +10.6% | +8.8% | +1.4% | +5.3% | -1.8% | +6.7% | +2.0% | -6.9% |
| Std Dev (σ) | 15.0% | 10.4% | 20.5% | 12.9% | 25.1% | 10.7% | 9.4% | 13.0% | 12.2% | 10.8% | 16.6% | 15.2% |
| Consistency (μ/σ) | 0.35 | -0.36 | 0.06 | -0.17 | 0.40 | 1.21 | 0.45 | 0.38 | -0.48 | 0.14 | 0.39 | -0.14 |
| Win Rate (%) | 63% | 50% | 50% | 44% | 67% | 88% | 63% | 63% | 25% | 50% | 75% | 25% |
| Winning / Losing Months | ▲5▼3 | ▲4▼4 | ▲4▼4 | ▲4▼5 | ▲6▼3 | ▲7▼1 | ▲5▼3 | ▲5▼3 | ▲2▼6 | ▲4▼4 | ▲6▼2 | ▲2▼6 |
| Longest Win / Loss Streak | ▲3▼2 | ▲2▼2 | ▲2▼2 | ▲2▼3 | ▲3▼1 | ▲4▼1 | ▲5▼2 | ▲3▼1 | ▲1▼4 | ▲3▼3 | ▲4▼1 | ▲1▼2 |
| Best | +23.4%in January 2019 | +5.6%in February 2023 | +42.8%in March 2019 | +14.0%in April 2025 | +50.4%in May 2023 | +36.1%in June 2018 | +18.6%in July 2020 | +21.2%in August 2018 | +8.2%in September 2025 | +21.6%in October 2021 | +24.5%in November 2023 | +28.2%in December 2020 |
| Worst | -20.0%in January 2022 | -26.5%in February 2026 | -20.4%in March 2024 | -22.9%in April 2023 | -24.5%in May 2022 | -2.3%in June 2022 | -9.0%in July 2025 | -18.4%in August 2019 | -31.2%in September 2019 | -11.0%in October 2018 | -24.1%in November 2025 | -16.1%in December 2022 |
−31.2%+50.4%
2026
Jan-11.1%
Feb-26.5%
Mar-4.6%
Apr-6.9%
May+6.9%
Jun-7.3%
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan+12.3%
Feb-3.1%
Mar+1.1%
Apr+14.0%
May+21.9%
Jun+13.9%
Jul-9.0%
Aug-3.0%
Sep+8.2%
Oct+10.5%
Nov-24.1%
Dec-10.6%
2024
Jan+6.4%
Feb+2.7%
Mar-20.4%
Apr-10.2%
May-1.7%
Jun+13.1%
Jul-6.7%
Aug+11.5%
Sep-14.5%
Oct+5.8%
Nov+14.3%
Dec-12.7%
2023
Jan+11.0%
Feb+5.6%
Mar-10.9%
Apr-22.9%
May+50.4%
Jun+8.0%
Jul+9.6%
Aug-2.7%
Sep-0.3%
Oct+2.0%
Nov+24.5%
Dec+12.2%
2022
Jan-20.0%
Feb-7.0%
Mar+0.9%
Apr-16.0%
May-24.5%
Jun-2.3%
Jul+3.7%
Aug+2.7%
Sep+3.2%
Oct-6.2%
Nov-13.4%
Dec-16.1%
2021
Jan-0.0%
Feb+2.7%
Mar-16.3%
Apr+9.3%
May+3.5%
Jun+11.3%
Jul+9.2%
Aug+18.0%
Sep-5.8%
Oct+21.6%
Nov+8.8%
Dec-7.4%
2020
Jan+20.6%
Feb-7.3%
Mar+17.1%
Apr+10.2%
May+46.2%
Jun+11.6%
Jul+18.6%
Aug+10.4%
Sep-1.8%
Oct-3.5%
Nov+14.7%
Dec+28.2%
2019
Jan+23.4%
Feb+2.7%
Mar+42.8%
Apr-3.7%
May+0.5%
Jun+11.7%
Jul+10.0%
Aug-18.4%
Sep-31.2%
Oct-6.9%
Nov+18.5%
Dec-10.8%
2018
Jan—
Feb—
Mar—
Apr+6.5%
May-12.1%
Jun+36.1%
Jul-1.2%
Aug+21.2%
Sep-4.7%
Oct-11.0%
Nov+8.2%
Dec-0.1%
Avg
Jan+5.3%
Feb-3.8%
Mar+1.2%
Apr-2.2%
May+10.1%
Jun+12.9%
Jul+4.3%
Aug+5.0%
Sep-5.9%
Oct+1.5%
Nov+6.4%
Dec-2.2%
Median
Jan+8.7%
Feb-0.2%
Mar-1.8%
Apr-3.7%
May+3.5%
Jun+11.7%
Jul+6.4%
Aug+6.5%
Sep-3.3%
Oct-0.8%
Nov+11.5%
Dec-9.0%
Last 5Y Avg
Jan-0.3%
Feb-5.7%
Mar-6.8%
Apr-8.4%
May+10.6%
Jun+8.8%
Jul+1.4%
Aug+5.3%
Sep-1.8%
Oct+6.7%
Nov+2.0%
Dec-6.9%
Std Dev (σ)
Jan15.0%
Feb10.4%
Mar20.5%
Apr12.9%
May25.1%
Jun10.7%
Jul9.4%
Aug13.0%
Sep12.2%
Oct10.8%
Nov16.6%
Dec15.2%
Consistency (μ/σ)
Jan0.35
Feb-0.36
Mar0.06
Apr-0.17
May0.40
Jun1.21
Jul0.45
Aug0.38
Sep-0.48
Oct0.14
Nov0.39
Dec-0.14
Win Rate (%)
Jan63%
Feb50%
Mar50%
Apr44%
May67%
Jun88%
Jul63%
Aug63%
Sep25%
Oct50%
Nov75%
Dec25%
Winning / Losing Months
Jan▲5▼3
Feb▲4▼4
Mar▲4▼4
Apr▲4▼5
May▲6▼3
Jun▲7▼1
Jul▲5▼3
Aug▲5▼3
Sep▲2▼6
Oct▲4▼4
Nov▲6▼2
Dec▲2▼6
Longest Win / Loss Streak
Jan▲3▼2
Feb▲2▼2
Mar▲2▼2
Apr▲2▼3
May▲3▼1
Jun▲4▼1
Jul▲5▼2
Aug▲3▼1
Sep▲1▼4
Oct▲3▼3
Nov▲4▼1
Dec▲1▼2
Best
Jan+23.4%2019
Feb+5.6%2023
Mar+42.8%2019
Apr+14.0%2025
May+50.4%2023
Jun+36.1%2018
Jul+18.6%2020
Aug+21.2%2018
Sep+8.2%2025
Oct+21.6%2021
Nov+24.5%2023
Dec+28.2%2020
Worst
Jan-20.0%2022
Feb-26.5%2026
Mar-20.4%2024
Apr-22.9%2023
May-24.5%2022
Jun-2.3%2022
Jul-9.0%2025
Aug-18.4%2019
Sep-31.2%2019
Oct-11.0%2018
Nov-24.1%2025
Dec-16.1%2022
−31.2%+50.4%
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