Market Movers rounded up the best reactions from investors and analysts on Zscaler’ s better-than-expected guidance. The experts, including Jim Cramer , discussed the cloud security company. Zscaler’s shares surged more than 20% after the firm reported better-than-expected preliminary revenue for the fiscal third quarter and rosy full-year guidance. Zscaler said that its revenue in the fiscal third quarter will range from $415 million to $419 million. Prior guidance had been $396 million to $398 million.