
Cloud security firm Zscaler's ZS.O shares fall 1.1% to $248.80 premarket
Bernstein downgrades stock to "market perform" from "outperform"
Brokerage says co's 2026 guidance for annualized recurring revenue fed into worries about increased competition
"We don’t, yet, see the company expanding beyond their core cloud-centric network cybersecurity segment" - Bernstein
Average rating of 38 analysts is "buy," their median PT is $330.45 - data compiled by LSEG
Up to last close, stock has risen 39.4% this year