Fortinet stock heads into the open after a 0.5 percent drop

At the close on September 16, 2026, Fortinet stock ended at USD 171.77 on Nasdaq, down 0.5 percent. That move came as Wall Street turned lower after the Federal Reserve lifted rates; a new Calgary cybersecurity hub was unveiled on September 16, 2026.

Fortinet stock closed at USD 171.77 on Nasdaq on September 16, 2026, down 0.5 percent. The session ended below the prior close after a midweek pullback in US equities.

September 16, 2026 recap

Fortinet Inc. (ISIN US34959E1091, Nasdaq: FTNT) traded between USD 171.68 and USD 174.15, with volume of 3.9 million shares. The close sat 1.4 percent below the session high and 0.1 percent above the low, which kept the stock inside its recent range.

US stocks finished lower after the Federal Reserve raised its key interest rate by 25 basis points to a target range of 3.75 percent to 4.00 percent, Reuters reported. Fortinet also said on September 16, 2026 that it unveiled a new cybersecurity Innovation Hub in Calgary, Fortinet said.

Today

US exchanges are open today, and Fortinet has a recent analyst update on the tape: TD Cowen reiterated a Buy rating on September 16, 2026, Investing.com reported. Wall Street also opened higher on September 16, 2026 before reversing later in the session, Reuters reported.