Sumitomo Mitsui Trust Group Reduces Fortinet Stake

The institutional investor sold over 41,000 shares of the cybersecurity company in Q4 2025.

Apr. 14, 2026 at 10:22am

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A high-contrast black and white image focusing on the intricate circuitry and hardware components of a cybersecurity appliance, conveying the technical complexity of modern digital security systems.An extreme close-up of the complex inner workings of a cybersecurity device, reflecting the intricate infrastructure powering the digital security industry.Sunnyvale Today

Sumitomo Mitsui Trust Group Inc. reduced its stake in Fortinet, Inc. (NASDAQ:FTNT) by 2.5% during the fourth quarter of 2025, according to a recent SEC filing. The institutional investor now owns 1,615,265 shares of the software maker's stock, valued at $128,268,000.

Why it matters

Fortinet is a leading cybersecurity company, and changes in institutional ownership of its stock can provide insights into market sentiment and future performance. Sumitomo Mitsui Trust Group's decision to reduce its Fortinet position may signal broader trends in the cybersecurity sector.

The details

Sumitomo Mitsui Trust Group sold 41,623 shares of Fortinet stock during the fourth quarter, bringing its total holding to 1,615,265 shares. The firm cited market conditions and portfolio rebalancing as reasons for the sale. Several other hedge funds also made changes to their Fortinet positions during the quarter.

  • Sumitomo Mitsui Trust Group reduced its Fortinet stake in the fourth quarter of 2025.

The players

Sumitomo Mitsui Trust Group Inc.

A major Japanese financial services group and institutional investor.

Fortinet, Inc.

A multinational cybersecurity company that develops and delivers integrated security solutions for enterprise, service provider and government customers worldwide.

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The takeaway

The reduction in Sumitomo Mitsui Trust Group's Fortinet stake reflects broader market trends and portfolio adjustments, but does not necessarily indicate any major concerns about Fortinet's long-term prospects in the cybersecurity industry.