NET vs. FTNT: Which Cybersecurity Stock Should You Buy Right Now?

The article favors Fortinet (FTNT) over Cloudflare (NET), citing Fortinet’s Q2 2026 SASE Firewall growth of 34% to more than $2 billion, FortiSASE billings growth above 100%, and a forward-sales multiple of 15.77x versus NET’s 34.93x. FTNT’s 2026 and 2027 EPS consensus estimates each rose by $0.03 in the past 30 days, while NET’s estimates were unchanged. Cloudflare’s non-GAAP gross margin fell 320 basis points year over year to 73.1%; the article rates FTNT a Zacks #2 Buy and NET a #4 Sell.

Analysis

The actionable distinction is less “cheap versus expensive” than durability and quality of growth. Fortinet’s installed-base distribution can lower customer acquisition friction, but high SASE penetration among large accounts also raises the bar for incremental growth: monitor net expansion and recurring service conversion, not headline billings alone. Product-led strength may be more cyclical than service growth. If service billings fail to convert into revenue, the market may discount the current growth mix.

Cloudflare’s margin decline is a warning, not yet proof that AI traffic is structurally uneconomic. Paid traffic can carry better monetization while shifting more network expense into cost of revenue; the key missing evidence is contribution margin by workload and whether gross-margin pressure stabilizes as scale/utilization improves. Conversely, if AI-agent usage grows faster than pricing, revenue growth could mask weak incremental economics. Its premium multiple makes it particularly exposed to any growth deceleration or margin-guide reset.

Near term, both shares have already had large runs, so Fortinet’s lower sales multiple should not be treated as downside protection. Over 1–3 months, service-billings conversion and gross-margin guidance are the likely relative catalysts. Over 6–18 months, the structural question is whether enterprise AI traffic creates recurring security spend or mainly increases infrastructure burden. A relative-value position is preferable to a broad sector call; competing SASE platforms, including Zscaler and Palo Alto Networks, constrain pricing and execution for both.

Key Decisions for Investors

• Favor FTNT over NET on a dollar-neutral pair basis, preferably on a pullback or after confirmation in the next results. Keep exposure modest: both stocks have rallied sharply, and the valuation gap may reflect differences in growth expectations rather than mispricing alone.
• For FTNT, require service billings to translate into service revenue growth and sustained SASE demand before adding. Thesis weakens if service growth fails to improve as guided, or if SASE billings decelerate without offsetting recurring-service expansion.
• Do not treat NET as a clean short solely on the reported gross-margin decline. Reassess if subsequent results show stabilization and credible workload-level monetization; a further gross-margin deterioration alongside slowing revenue growth would strengthen the short leg.
• Track NET’s gross-margin trajectory and workload contribution economics, plus FTNT’s service-billings conversion and product/service mix. These are more informative than management’s broad AI opportunity claims or a forward-sales comparison in isolation.