Zai Lab Limited Unsponsored ADR (ZLAB) shares soared 14.7% in the last trading session to close at $33.18. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 42.3% gain over the past four weeks.The sudden soaring of the stock price was observed after Zai Lab Limited announced an objective response rate of 74%, from the ongoing global phase Ia/Ib study, across all tested dose levels of its investigational candidate, ZL-1310, in patie ...