AbbVie may now consider a takeover of Achillion Pharmaceuticals Inc. (NASDAQ:ACHN), a $411 million company, to expand in that market, Redmond said. Shares of Achillion rallied (ACHN:US) as much as 67 percent yesterday. Achillion Pharmaceuticals, Inc. (NASDAQ:ACHN) stock performance was 47.57% in last session and finished the day at $4.25. Traded volume was 47.79million shares in the last session and the average volume of the … Continue reading Biotech unusual volume stocks: Achillion Pharmaceuticals (NASDAQ:ACHN), Idenix Pharmaceuticals Inc (NASDAQ:IDIX), BioDelivery Sciences International (NASDAQ:BDSI), ImmunoCellular Therapeutics (NYSEMKT:IMUC), Anika Therapeutics (NASDAQ:ANIK)