Fortinet stock rating reiterated at Buy by TD Cowen on AI tailwinds

TD Cowen reiterated a Buy on Fortinet and kept its $100 target while raising estimates ahead of the May 6 earnings report, citing strong datacenter and AI-driven demand. The firm expects beat-and-raise results, with fiscal 2026 street revenue growth gradually expanding toward 15% YoY and upside beyond management's top range. The note also highlighted Fortinet's 80% gross margin and 14% trailing-12-month revenue growth, reinforcing a constructive view on fundamentals.

Analysis

The key market implication is not simply that FTNT may print a beat; it is that security spending is reaccelerating at the exact point where AI-driven datacenter capex is widening the attack surface. That tends to favor vendors with broad platform attach rather than point-product names, because new infrastructure deployments create an immediate need for segmentation, policy orchestration, and monitoring before workloads go live. In other words, the second-order winner is the company that can monetize both the buildout cycle and the security retrofit cycle.

The estimate reset matters because the stock’s sensitivity is likely highest on billings and forward guidance, not near-term EPS. If management confirms that price increases have not damaged demand, that removes the main bear case that security budgets were already saturated; if not, the multiple can compress quickly because this is still a crowded “quality growth” trade with limited room for disappointment. The most important operating signal over the next 1-2 quarters is whether growth is broadening outside the U.S. and whether channel inventory stays clean, since any regional weakness would suggest the AI tailwind is being offset by budget normalization elsewhere.

The contrarian view is that the AI angle may already be over-owned conceptually across cyber, while the actual monetization is slower and more diffuse than the market expects. If Claude-related concerns are indeed irrelevant, then the stock should trade on execution only; if management implies that AI spend is mostly infrastructure-heavy and not security-heavy, the recent optimism can unwind sharply. The risk/reward is best if entered into earnings weakness rather than ahead of the print, because implied expectations are high and the downside from a guide-down is likely larger than the upside from a modest beat.

From a broader portfolio lens, FTNT looks like a cleaner way to express “AI capex creates adjacent software demand” than direct AI semis, but the trade should be sized as a catalyst-driven growth position rather than a durable secular compounder at current valuation. The setup favors a short-duration event trade, then reassessment once guidance establishes whether this is a one-quarter acceleration or a new run-rate.

Key Decisions for Investors

• Long FTNT into earnings only on a pullback: buy weakness ahead of the May 6 print, targeting a 5-8% upside gap if guidance raises the FY26 growth trajectory; cut if management signals AI-related demand is mostly awareness and not monetized orders.
• Pair trade: long FTNT / short a slower-growth cyber peer basket over the next 1-2 quarters to isolate the vendor capturing platform attach from datacenter and AI buildouts; the thesis breaks if pricing pressure or regional softness forces a guide-down.
• Sell downside protection on FTNT only if options are rich into earnings: express via a cash-secured put or put spread into the event, but keep strike below the prior support zone to avoid being long a disappointment-driven re-rate.
• If you want a cleaner catalyst hedge, buy a small FTNT call spread for the next earnings cycle rather than outright stock; this keeps risk defined because the setup is binary around guide-up versus multiple compression.
• Watch for confirmation in the next print from billings and RPO growth rather than EPS alone; if those metrics do not accelerate, take profits quickly because the market is likely to treat the AI narrative as overextended.