Ken Xie Net Worth

Ken Xie has an estimated net worth of $11.5 billion, according to Forbes Real-Time Billionaires, Ken Xie profile (figures as of October 20, 2026). That is up from $1.3 billion in 2020.

Ken Xie is an entrepreneur in cybersecurity and the cofounder and CEO of Fortinet. He started building security companies after studying engineering at Stanford University. In 1993, he founded Systems Integration Solutions, also called SIS, as a software firewall business. In 1996, he built the first ASIC-based firewall/VPN appliance and also started NetScreen. Those early products helped make his name in network security and set up the next stage of his career.

His wealth comes mainly from Fortinet, which he founded with his brother Michael Xie in 2000. Fortinet sells firewalls, cloud security, and other services to businesses. The company went public on the Nasdaq in 2009 and reported nearly $6 billion in 2024 revenue. Ken Xie owns more than 8% of Fortinet. Forbes put his net worth at $11.5 billion on its real-time billionaires tracker on October 20, 2026.

How Ken Xie built his fortune

Ken Xie made his money by starting and leading cybersecurity companies. His first business was SIS in 1993, focused on software firewalls. In 1996, he built the first ASIC-based firewall/VPN appliance and launched NetScreen. He later served as NetScreen's CEO. Juniper Networks acquired NetScreen for $4 billion in 2004, a major deal that added to Xie's standing in the security industry and helped fund his next company.

In 2000, Xie left NetScreen and started Fortinet with Michael Xie. He has led Fortinet as CEO since then, while Michael became president and chief technology officer. The company is based in California and sells firewalls, cloud security, and related services to businesses. Fortinet's public listing in 2009 gave investors a clear way to value the company. Its nearly $6 billion in 2024 revenue and Ken Xie's stake of more than 8% are central to his wealth.

Forbes net worth timeline

Forbes tracked a sharp rise in Ken Xie's fortune over several years. It estimated his wealth at $1.3 billion in 2020, $4.2 billion in 2021, and $5.7 billion in 2022. The estimate then moved to $4.1 billion in 2023 and $5 billion in 2024. Those changes line up with the market value of Fortinet, the public company at the center of his fortune, plus the size of his ownership stake.

The Forbes estimate kept moving in 2025 and 2026. Forbes put him at $7.1 billion in 2025 and $5.6 billion in 2026 on its World's Billionaires List. By October 2026, Forbes' real-time billionaires tracker showed $11.5 billion. Fortinet remains the main reason for those swings. Xie is self-made, works in the technology industry, and built his fortune through cybersecurity companies rather than inheritance.