Shares of Gilead Sciences Inc. GILD, +1.03% tumbled 10.9% beating in premarket trading Monday, to pullback from an 11-month high, after the biotechnology company disappointing trial results of its lung cancer treatment. That selloff would put the stock in danger of the biggest one-day decline since it plunged 14.3% on Dec. 22, 2014. The company said the Phase 3 Evoke-01 study of Trodelvy vs. docetaxel did not meet its primary endpoint of overall survival in previously treated metastatic non-small cell lung ...