# Zscaler crashes 31% on ugly guidance — short the continued fallout

_AI-generated trading idea · SHORT · ZS_

> Canonical page: https://commonquant.ai/research/for-you/zscaler-crashes-31-on-ugly-guidance-short-the-continued-fall--014b1c06-bf95-4a62-b950-b95f458b0472

Cybersecurity company Zscaler lost nearly a third of its value in a single day — its worst ever — after issuing a cautious outlook and shaking up its sales leadership. The stock has already lost half its value over the past year.

## Idea

Zscaler just suffered its worst single-day drop ever — down 31% — after management gave a weak outlook and reorganized its sales team. A crash this severe on fundamental news (not just market noise) tends to attract more selling in the days that follow as analysts downgrade, institutional investors trim positions, and stop-losses get triggered. The stock has already been cut in half over the past year, so there's no floor of confident buyers stepping in. This is the kind of situation where the first big drop is often followed by a second leg down.

## Key details

- Symbols: ZS
- Timeframes: daily
- Tags: \#earnings, \#short, \#cybersecurity, \#momentum

## Community

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## News sources

- [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
- [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

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