Fortinet Inc., US34959E1091

Fortinet stock heads into the open after a 1.84 percent drop

Published on 09/21/2026 at 07:12 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

At the close on September 18, 2026, Fortinet stock ended at USD 169.41 on the Nasdaq, down 1.84 percent. The Nasdaq Composite rose 0.39 percent that session, while Fortinet's next quarterly results are due on October 29, 2026.

Architekturvisualisierung eines modernen Technologiecampus mit Glasfassaden und Landschaftspark
Fortinet Inc. moderner Glasfassaden Campus als architektonisches Render mit Landschaft für ISIN US34959E1091, Illustration mit AI erstellt.

Fortinet stock closed at USD 169.41 on the Nasdaq on September 18, 2026, down 1.84 percent. The move came after a broad market advance, with the Nasdaq Composite ending the session up 0.39 percent.

September 18, 2026 in numbers

Fortinet Inc. (ISIN US34959E1091, Nasdaq: FTNT) traded between USD 168.72 and USD 172.00 and finished below the day's midpoint. The close was also below the USD 172.58 prior close cited in the session snapshot, and the stock ended near the lower end of its recent trading band.

As Zacks reported on September 21, 2026, Fortinet closed at USD 169.41 and the session move was minus 1.84 percent. The same report said the market improved, which left the stock lagging the Nasdaq Composite's 0.39 percent gain that day.

October 29, 2026 is next

Fortinet's next quarterly results are scheduled for October 29, 2026, according to Zacks. That date is the only clearly dated company event in the current setup, so it anchors today's pre-open watchlist.

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