AstraZeneca posts loss; to buy Actavis lung unit By: CNBC.com News February 05, 2015 at 02:25 AM EST AstraZeneca reported a loss for the fourth quarter of 2014, but stressed that it was on track to return to growth by 2017. Read More >> Related Stocks: Actavis Plc Astrazeneca Plc ADR Pfizer