Zscaler is trading at $244.08, down 4.58% from its October 28 regular-session close of $255.80 amid after-hours software weakness. - No clear Zscaler-specific announcement was identified for October 28; IGV fell 3.76%. - Microsoft and Alphabet earnings were scheduled after the close, focusing attention on cloud and AI growth and spending. - After a rally, reporting described Zscaler’s October 28-session pullback as profit-taking ahead of major events; this does not establish a company-specific cause for this decline.