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Zscaler (ZS) is plunging following its Q3 earnings release despite topping EPS and revenue expectations, as investors focused on a sharp reduction in free cash flow guidance driven by surging hardware costs, sales leadership departures, and a conservative FY27 outlook that signals meaningful growth deceleration.

• ARR grew 25% to $3.525 bln (21% excluding Red Canary's $127 mln contribution), deferred revenue climbed 25% to $2.477 bln, and non-GAAP operating margin hit a record 23%.
• The core business remained exceptionally strong, driven by AI-driven demand and Zero Trust adoption. AI Protect bookings surpassed $100 mln over the trailing 12 months, customers spending over $1 mln in ARR grew 18% to 748, and management positioned ZS as the critical defense against frontier AI models like Mythos.
• Free cash flow guidance became the key pressure point, with FY26 FCF margin slashed to 22.8-23.3% from 26.5-27.0%. Rising hardware costs prompted equipment purchase acceleration into Q4, pushing FY26 CapEx to high single digits as a percentage of revenue with FY27 CapEx expected to rise up to 200 bps.
• Two key sales leaders departed late in the quarter, prompting a "prudent stance" on forecasts. This conservative posture contributed to FY27 guidance projecting ARR and revenue growth of just 16-17%, a sharp deceleration from the current 25% trajectory.
• Q4 guidance showed mixed signals. Revenue of $875-$878 mln (22% growth) landed slightly below consensus, while non-GAAP EPS of $1.08-$1.09 exceeded the $1.03 consensus. FY26 guidance was raised for ARR, revenue, and EPS, but the FCF reduction and FY27 outlook spooked investors.

Briefing.com Analyst Insight

This was a strong quarter operationally for ZS, delivering impressive top-line growth, record 23% operating margin, and compelling AI security traction that validates its differentiated Zero Trust architecture. The results reinforce the company's leadership position, supported by robust AI Protect momentum exceeding $100 mln in bookings and Z-Flex multi-year commitments surpassing $1 bln in TCV. However, the report highlighted near-term execution risks from sales leadership turnover and significant hardware cost inflation. The sharp FCF margin reduction and conservative FY27 outlook projecting growth deceleration to 16-17% suggest profitability recovery and organic momentum face more pressure than anticipated. Management's early FY27 guidance signals transparency around medium-term challenges, though FCF expansion and new logo acquisition remain critical areas to monitor.