Fortinet Is Down 28% YTD, But Its Free Cash Flow Just Hit a Record $2.21 Billion

Core Insights - Fortinet's stock has decreased by 28% year-to-date, trading at $77 as of February 25, 2026, despite achieving a record free cash flow of $2.21 billion in 2025 [1] - The company reported a 16% increase in billings to $7.55 billion and a non-GAAP operating margin of 35.5% for the full year 2025, marking its sixth consecutive year exceeding the "Rule of 45" [1] - Fortinet's Unified SASE segment saw a significant growth, with billings increasing by 40% in Q4 and FortiSASE ARR rising over 90% [1] Financial Performance - Fortinet's free cash flow reached a record $2.21 billion in 2025 [1] - The company’s billings for the year grew by 16% to $7.55 billion [1] - Non-GAAP operating margin for 2025 was reported at 35.5% [1] SASE Segment Growth - Unified SASE billings grew by 40% in Q4 2025, indicating strong demand [1] - FortiSASE ARR increased by more than 90%, showcasing significant adoption [1] - CEO Ken Xie highlighted the unique offering of Sovereign SASE, which has potentially doubled the total addressable market [1] Share Repurchase and Insider Activity - The board approved a $1 billion expansion of the share repurchase program, with approximately $1.4 billion remaining in authorization [1] - Fortinet's CFO described the buyback strategy as a disciplined approach to capital allocation [1] - CEO Ken Xie and CTO Michael Xie sold around $47 million in shares, which was a tax-efficient move rather than a clear confidence signal [1] Guidance and Market Outlook - For Q1 2026, Fortinet's operating margin guidance is set at 30-32%, down from Q4's 37.3% due to planned infrastructure investments [1] - The company anticipates billings of $8.4-$8.6 billion and revenue of $7.5-$7.7 billion for 2026, indicating continued growth [1] - Analysts are closely monitoring SASE momentum and margin trajectory as key variables for future performance [1]