Why Fortinet Stock Fell 25% After a Quarter That Beat Forecasts

Fortinet stock lost about a quarter of its value in after hours trading on Wednesday, even though the company grew revenue 20%, lifted billings 29% and raised its full year revenue outlook. The drop, reported by Stocktwits and in a Nexus Research morning note, made the cybersecurity company the steepest faller in a broad software selloff that also hit ServiceNow, Palo Alto Networks and Salesforce. Here are the questions investors and customers are asking.

Why did Fortinet stock fall if the quarter looked strong?

Growth in the part of the business that sells hardware slowed sharply. Fortinet said product revenue rose 37% to $765 million in the third quarter. That would be a fine result for most companies, but it followed 52% growth in the second quarter, according to Stocktwits. A slowdown of 15 percentage points in a single quarter is the kind of change that makes investors question how long a hardware upswing can last.

Stocktwits also noted that some analysts felt the beat on billings and revenue was smaller than they wanted. When a stock is priced for big upside surprises, a modest beat can trade like a miss.

How much did Fortinet make in the third quarter?

According to Fortinet's results release dated October 28, for the quarter that ended September 30:

• Revenue rose 20% from a year earlier to $2.08 billion.
• Billings rose 29% to $2.34 billion.
• Product revenue rose 37% to $765 million.

The release headline also said the company raised its 2026 revenue guidance to 20% year over year growth. In other words, management did not signal any slowdown in the overall business.

What are billings, and why do investors watch them so closely?

Billings measure what Fortinet invoiced customers in the period, including multiyear service contracts that it will recognize as revenue later. Because a big share of Fortinet's sales comes from subscriptions and support, billings act as an early read on future revenue. A 29% jump is strong on its face, which is why the reaction came down to product growth and the size of the beat rather than the headline totals.

Did other cybersecurity and software stocks fall too?

Yes. Fortinet reported on the same evening as ServiceNow, and the two sets of numbers weighed on the whole sector. Per Stocktwits, Palo Alto Networks fell 5.5% overnight, Salesforce dropped 4.7%, and Intuit and Adobe each lost about 2%. The iShares Expanded Tech Software ETF slid 3%.

ServiceNow's report did most of the damage outside security. Its adjusted earnings of $1.00 a share missed expectations, and the Nexus note said its fourth quarter revenue forecast of $4.25 billion to $4.26 billion came in below the $4.36 billion Wall Street expected. Its shares fell roughly 14% to 17% after hours. For another recent case of how fast sentiment can turn on infrastructure stocks, see our story on CoreWeave's plunge as bond yields hit 15%.

Is Fortinet still growing?

By most measures, yes. Twenty percent revenue growth and 29% billings growth are well ahead of what many large software companies reported this week, and Fortinet lifted its revenue outlook rather than cutting it. The share price move reflects a reset in expectations for hardware sales, not a collapse in the business.

Should Fortinet customers worry about the share price drop?

For organizations running FortiGate firewalls, a lower stock price does not change support, patches or contracts. What matters far more is that the gear stays updated. Edge devices from every major vendor are popular targets for attackers, and supply chain incidents like the ConnectWise breach tied to Storm-0940 show how one weak link can reach many customers. The same goes for web servers, as the recent critical PHP flaws made clear. Keep firmware current no matter what Wall Street thinks of the vendor.

What will investors look for in Fortinet's next report?

Fortinet's fourth quarter ends December 31. The figure to watch is product revenue growth: another sharp step down from 37% would confirm the worry behind this week's selloff, while a steadier number could ease it. Billings will matter too, since they hint at revenue for 2027. Until then, the open question is whether 37% marks a new normal or just a stop on the way down. More coverage of the sector is on our tech page.