 NEW YORK--BUSINESS WIRE--WHY: Rosen Law Firm, a global investor rights law firm, announces it is investigating potential securities claims on behalf of shareholders of Tarena International, Inc. NASDAQ: TEDU resulting from allegations that Tarena may have issued materially misleading business information to the investing public. SO WHAT: If you purchased Tarena securities you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrange 