Arrowhead Research Soars After Acquiring Novartis' RNAi Portfolio By: Benzinga via Benzinga March 05, 2015 at 12:54 PM EST Arrowhead Research Corp (NASDAQ: ARWR) was trading higher on Thursday after the announcement that they acquired Novartis' (NYSE: ... Read More >> Related Stocks: Macy's Novartis Ag ADR