Fortinet plunges 26% after hours and takes Tenable with it as Gen Digital rises

Network security company Fortinet reported better-than-expected third quarter results but suffered a steep after-hours selloff, with shares falling approximately 26%. Competitor Tenable Holdings, which also exceeded forecasts, was caught in the broader cybersecurity sector decline. Gen Digital Inc., a consumer security firm, bucked the trend and saw share price gains following its own earnings release. The divergent market reactions highlight the unpredictability of investor sentiment even when companies deliver strong financial performance.

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