Gilead Sciences Plummets Amid AbbVie Deal With Express Scripts By: Benzinga via Benzinga December 22, 2014 at 09:46 AM EST Shares of Gilead Sciences, Inc. (NASDAQ: GILD) fell over 12 percent in early trading Monday amid news that AbbVie Inc (NYSE: ABBV) ... Read More >> Related Stocks: AbbVie Express Scripts Holding Gilead Sciences