Zscaler Ramps Capex for AI Security, Squeezing Free Cash Flow

What happened

Zscaler announced an increase in capital expenditures to meet rising AI security demand, aligning with the company's previously disclosed higher infrastructure spending. The ramp-up pressures near-term free cash flow, echoing the DeepValue report's observation that FY26 free cash flow margin guidance was cut to 22.8%-23.3% from 26.5%-27.0%. Management explained that memory, storage, and processor pricing, along with AI-related infrastructure needs, are driving the higher spending. While AI security bookings have exceeded $100 million over the last twelve months, the revenue translation remains unproven, and the market is questioning whether AI demand can justify the added costs. The report maintains a WAIT rating, with attractive entry at $135 and trim above $180, awaiting evidence that AI monetization and lower capex can coexist.

Implication

The near-term implication is that Zscaler's free cash flow margin will stay under pressure, likely in the low-20s percent, reducing the stock's valuation appeal. If capex levels persist into FY27 as management warned, the market may further de-rate the shares, aligning with the report's bear scenario of $120. Conversely, if AI security products begin to show measurable revenue contribution and attach rates improve, the stock could re-rate toward the bull case of $185. For now, the report's WAIT rating stands, and investors should look for a better entry point below $135 or confirmation of improving metrics before adding exposure. Monitoring capex guidance and AI disclosure in the next two quarterly reports will be critical.

Thesis delta

The thesis is unchanged; the news confirms the existing risk of elevated capex pressuring free cash flow. While AI demand is growing, it has not yet translated into sufficient financial benefit to offset the additional infrastructure spending. The balance of risk remains skewed to the downside unless AI monetization becomes measurable and capex intensity declines.