Fortinet Stock Drops Despite Q3 Earnings Beat and Raised Full-Year Guidance

Fortinet reported third-quarter 2026 earnings that topped Wall Street estimates on both the top and bottom lines, yet shares fell sharply after the results, declining roughly 5.9% in after-hours trading. The Sunnyvale, California-based cybersecurity company posted adjusted earnings of 91 cents per share, beating the consensus estimate of 85 to 86 cents, and revenue of $2.08 billion, edging past the $2.06 billion analysts expected, representing year-over-year growth of roughly 19.5%.

For the fourth quarter, Fortinet guided revenue of $2.15 billion to $2.25 billion and adjusted earnings per share of 93 to 95 cents. The company also raised its full-year outlook, projecting revenue of $8.13 billion to $8.22 billion and full-year earnings of $3.54 to $3.58 per share.

Despite the raised guidance, investors appeared to view the outlook as insufficiently aggressive given the stock's premium valuation, a dynamic reflected in the headline-versus-reaction disconnect noted across multiple outlets. Analysts had entered the print expecting strong results given Fortinet's SASE firewall demand and AI-security expansion, but the magnitude of the revenue guidance raise did not clear the bar the market had priced in.