Zscaler, Inc. (ZS)
Tech Top 100 · Information Technology · data since 2018-03-16 · last close 2026-09-09
Zscaler, Inc. (ZS) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -11.1 | -26.5 | -4.6 | -6.8 | 6.9 | 1.0 | 7.1 | 24.6 | -11.8 | · | · | · |
| 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 | -6.3 | -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 | -1.9 | -3.5 | 14.7 | 28.2 |
| 2019 | 23.4 | 2.7 | 42.8 | -3.7 | 0.5 | 11.7 | 10.0 | -18.4 | -31.3 | -6.9 | 18.5 | -10.8 |
| 2018 | · | · | -14.9 | 6.5 | -12.1 | 36.1 | -1.2 | 21.2 | -4.7 | -11.0 | 8.2 | -0.1 |
| Avg | 5.3 | -3.8 | -0.6 | -2.2 | 10.1 | 11.6 | 4.6 | 7.1 | -6.5 | 1.5 | 6.4 | -2.2 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
ZS seasonality — average by calendar month
Zscaler, Inc.'s record starts in 2018, so each calendar month rests on 9 observations — short enough to read as description rather than signal. Its strongest month by median is June — positive in 8 of 9 years, median +11.6%. December is the soft spot, down in 6 of 8 with a median of -9.0%. Across its full record it has closed 56% of months higher, swings ±15.2% in an average month and has fallen 76.4% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +5.3% | -3.8% | -0.6% | -2.2% | +10.1% | +11.6% | +4.6% | +7.1% | -5.9% | +1.5% | +6.4% | -2.2% |
| Win rate | 62%/8 | 50%/8 | 44%/9 | 44%/9 | 67%/9 | 89%/9 | 67%/9 | 67%/9 | 25%/8 | 50%/8 | 75%/8 | 25%/8 |
Win rate = share of positive months / sample size.
ZS risk & extremes
ZS drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was Zscaler, Inc.'s best month?+
Zscaler, Inc.'s strongest completed month on record is May 2023, at +50.37%.
What was Zscaler, Inc.'s worst month?+
Its weakest completed month on record is September 2019, at -31.25%.
Is Zscaler, Inc. up this year?+
Zscaler, Inc. is down 26.15% year to date, measured from its last close before 1 January.
What is Zscaler, Inc.'s 1-year return?+
-41.16% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is Zscaler, Inc.'s biggest drawdown?+
The deepest peak-to-trough fall on record is 76.4%, measured on month-end closes since 2018.
Which calendar month is historically best for Zscaler, Inc.?+
June has the highest average return across every completed June since 2018. An average is not a forecast.
About Zscaler, Inc.
Zscaler, Inc. is an information technology business worth about $27 billion. It sells the picks and shovels of the digital gold rush — with price receipts on this site going back to 2018. And the long game: $100 at its first close here (2018) would be about $671 today.
Did you know?
- Its best month on record was May 2023 at +50.37%; its worst, September 2019 at -31.25%.
- It has closed June in the green 8 out of 9 times — not a promise, just a suspicious habit.
Trivia for entertainment — the numbers come from our price data; the jokes don't.