Fortinet stock suffered a significant decline on October 29, 2026. Revenue forecasts were bleak, and product growth slowed. Service revenue growth hit 13%, the smallest in a long time. This led to a big two-day drop in the stock price. Investing.com Canada all reported the decline. BofA Securities lowered its rating on Fortinet, adding to concerns. The stock's drop highlights difficult circumstances in the software sector. Other companies like ServiceNow are also experiencing challenges.