# Zscaler crashes 31% on awful guidance — short the cybersecurity fallout

_AI-generated trading idea · SHORT · CRWD, PANW, ZS_

> Canonical page: https://commonquant.ai/research/for-you/zscaler-crashes-31-on-awful-guidance-short-the-cybersecurity--afbaf393-4ebf-4750-b976-234e33f0d4eb

Zscaler, a major cybersecurity company, just had its worst day ever — crashing 31% after reporting disappointing guidance and shaking up its sales leadership. The stock has now lost half its value over the past year.

## Idea

Zscaler just lost nearly a third of its value in a single day — its worst ever — after giving cautious forward guidance and announcing a sales leadership shakeup. The stock has been cut in half over the last year, and today's crash signals deep problems. When a high-profile cybersecurity name implodes this dramatically, it often drags down competitors like Palo Alto Networks and CrowdStrike as investors reassess the whole sector. The selling pressure may not be over — post-earnings crashes of this magnitude tend to see continued institutional selling in the days that follow.

## Key details

- Symbols: CRWD, PANW, ZS
- Timeframes: 1D
- Tags: \#cybersecurity, \#earnings, \#short

## Community

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## News sources

- [Zscaler tanks 31% for worst day ever on 'prudent' guidance, sales shakeup](https://www.cnbc.com/2026/05/27/zscaler-zs-earnings-q3-2026.html) — CNBC
- [Earnings live updates: Zscaler stock plunges 31% on cautious guidance](https://finance.yahoo.com/markets/live/earnings-live-updates-zscaler-stock-plunges-31-on-cautious-guidance-115127526.html) — Yahoo Finance

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