Short answer: Fortinet earnings beat estimates and the company raised its 2026 revenue and billings outlook, yet the stock fell about 22% in late-afternoon trading on Thursday. The reason is a smaller number: Fortinet trimmed its full-year service revenue forecast to $5.15 billion to $5.17 billion, down from $5.18 billion to $5.22 billion, according to Fortinet’s earnings release and Motley Fool.
| Measure | Q3 2026 or 2026 outlook |
|---|---|
| Total revenue | $2,078.4 million, up 20% |
| Product revenue | $765.0 million, up 37% |
| Service revenue | $1,313.4 million, up about 13% |
| Billings | $2,336.3 million, up 29% |
| Non-GAAP EPS | $0.91 (analysts expected $0.86) |
| Free cash flow | $864.8 million |
| 2026 revenue outlook | $8.125 billion to $8.215 billion |
| 2026 service revenue outlook | $5.15 billion to $5.17 billion (was $5.18 billion to $5.22 billion) |
What the Fortinet earnings report shows
Fortinet earnings arrived after the close on Wednesday. Revenue rose 20% to $2.08 billion, ahead of the $2.06 billion analysts expected, Investing.com reports. Product sales, which are firewalls and other hardware, grew 37%. Billings, the contracts signed in the quarter, rose 29%. Fortinet raised its billings guidance for the third time this year, and CEO Ken Xie credited demand for its security products in the age of artificial intelligence.
Fortinet earned $0.91 per share on a non-GAAP basis and generated $864.8 million in free cash flow. It also stacked up deferred revenue, which is service work Fortinet has billed but not yet counted as sales. That total reached $7.93 billion, up from $7.12 billion at the end of 2025.
Why a beat became a plunge
In Fortinet earnings, services are the steady, recurring side of the business. They grew only about 13% while hardware grew 37%, yet they still make up about 63% of revenue. The forecast cut is small: roughly $40 million at the midpoint, under 1% of the full-year range. Investors seized on it anyway.
The new range also points to a quiet finish. Over the first nine months Fortinet reported $3.79 billion in service revenue. That leaves about $1.36 billion to $1.38 billion for the fourth quarter, barely above the $1.31 billion of the third.
Motley Fool says the worry is low attach rates, which means fewer service contracts sold with each piece of hardware. Shares were quoted near $136 at 3:48 p.m. Eastern, down from about $174, on volume more than three times the average.
Management calls it timing
Chief Financial Officer Christiane Ohlgart called the shortfall “really a timing issue,” according to the Investing.com call transcript summary. She said large enterprise deals include services that start after the hardware is installed. She pointed to service billings up 26% and deferred revenue up 19%, and said Fortinet expects improved service growth rates in 2027.
One detail deserves a second look. Xie said on the call that price increases helped the top line by about 10%. Investor relations later corrected that to about 10 percentage points of billings growth, Investing.com reports. That means a meaningful share of the 29% billings gain came from charging more, not from selling more.
Cybersecurity peers feel it too
Other security stocks fell after the Fortinet earnings report. Palo Alto Networks fell about 5% and CrowdStrike about 4% during the day, according to a 24/7 Wall St. headline. Security is a hot corner of the market. Our look at Proofpoint’s $6.3 billion Varonis deal shows how much buyers will pay for it, and our report on Google’s cyber-focused Gemini model shows how AI is changing the field.
Editor’s take
Fortinet earnings beat estimates and lifted the outlook, yet the stock still lost about a fifth of its value. The market is not judging last quarter. It is judging the service business, which is supposed to be the steady part, and that part is slowing. Management says the problem is timing. The fourth-quarter results and 2027 service growth will show if that is true. Watch two numbers: service growth against product growth, and how much of billings growth comes from price.
