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Sunnyvale Today
By the People, for the People
Robeco Institutional Asset Management B.V. Increases Stake in Fortinet
The institutional investor added nearly 900,000 shares of the cybersecurity firm in Q4 2025.
Apr. 12, 2026 at 10:39am
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Robeco's increased investment in Fortinet's network security solutions reflects the growing importance of cybersecurity in the digital age.Sunnyvale TodayRobeco Institutional Asset Management B.V. increased its stake in Fortinet, Inc. (NASDAQ:FTNT) by 54.8% in the fourth quarter, according to its most recent 13F filing with the Securities & Exchange Commission. The institutional investor now owns 2,522,604 shares of the software maker's stock, worth approximately $200 million.
Why it matters
This significant increase in Robeco's Fortinet holdings signals the institutional investor's confidence in the cybersecurity company's growth potential. As the shift to remote work and cloud computing continues, demand for Fortinet's network security solutions is expected to remain strong.
The details
Robeco Institutional Asset Management B.V. purchased an additional 892,969 shares of Fortinet in Q4 2025, bringing its total position to 2,522,604 shares. This represents a 54.8% increase from the previous quarter. Fortinet is a leading provider of integrated security solutions, with its FortiGate next-generation firewalls and FortiOS operating system forming a core part of its product portfolio.
- Robeco Institutional Asset Management B.V. filed its 13F report for the fourth quarter of 2025 on April 12, 2026.
- The institutional investor increased its Fortinet stake during the three-month period ending December 31, 2025.
The players
Robeco Institutional Asset Management B.V.
A global asset management firm that provides investment solutions to institutional and individual investors worldwide.
Fortinet, Inc.
A multinational cybersecurity company that develops and delivers integrated security solutions for enterprise, service provider, and government customers.
The takeaway
Robeco's increased stake in Fortinet underscores the institutional investor's confidence in the cybersecurity firm's growth prospects, particularly as the need for robust network security solutions remains a top priority for businesses and organizations.
