 NEW YORK--BUSINESS WIRE--WHY: Rosen Law Firm, a global investor rights law firm, announces the filing of a class action lawsuit on behalf of purchasers of the securities of Jianpu Technology Inc. NYSE: JT between May 29, 2018 and February 16, 2021, inclusive the Class Period. A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than April 19, 2021. SO WHAT: If you purchased Jianpu securities during the Class Period you m 