ZS — Zscaler, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2018-03-16.
Performance
Technicals
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Measured signals that fired on ZS
| date | signal | measured base rate |
|---|---|---|
| 2026-08-05 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-08-05 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-06-29 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-17 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-05-27 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-04-16 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-27 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 142 | 148.81 | 21.1K |
| 2026-07-27 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 118 | 147.74 | 17.4K |
| 2026-07-27 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 96 | 146.75 | 14.1K |
| 2026-07-27 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 75 | 145.71 | 10.9K |
| 2026-07-27 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 72 | 144.74 | 10.4K |
| 2026-07-06 | Schlossman Robert Chief Legal Officer | Open-market sale 10b5-1 plan | 122 | 150.00 | 18.3K |
| 2026-06-25 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 1.7K | 124.07 | 210.4K |
| 2026-06-25 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 560 | 124.87 | 69.9K |
| 2026-06-25 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 504 | 123.18 | 62.1K |
| 2026-06-25 | RUBIN KEVIN Chief Financial Officer | Open-market sale 10b5-1 plan | 228 | 125.97 | 28.7K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 1.2B | 8.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 832.0M | 5.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | 653.9M | 4.7M |
| FIRST TRUST ADVISORS LP | 493.6M | 3.5M |
| GOLDMAN SACHS GROUP INC | 410.3M | 2.9M |
| STATE STREET CORP | 334.5M | 2.4M |
| AMERICAN CENTURY COMPANIES INC | 334.5M | 2.4M |
| FMR LLC | 307.3M | 2.2M |
| GEODE CAPITAL MANAGEMENT, LLC | 292.0M | 2.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 275.7M | 2.0M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Zscaler Stock: Buy or Sell? · 2026-08-19
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