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Zscaler tanks 31% for worst day ever on 'prudent' guidance, sales shakeup

  • Samantha Subin--CNBC
  • published date: 2026-05-27 20:36:47 UTC

Zscaler has shed half its value over the last year.

Zscaler's stock plummeted more than 30% on Wednesday for its worst day ever after issuing underwhelming guidance that overshadowed better-than-expected fiscal third-quarter results. The cybersecurit… [+2199 chars]

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