Goldman Sachs analyst Robert Jones downgraded Walgreens Boots Alliance (WBA) to Sell from Neutral and lowered his price target for the shares to $68 from $73. The analyst says he struggles to make a "compelling fundamental case" for the Americas Healthcare Services Supply Chain heading into 2019 as "issues facing core growth drivers do not seem to be abating." Jones sees limited "core" growth for the large-cap names amid persisting sales and margin pressures and as drug pricing remains a regulatory focus. He downgrades Walgreens to Sell saying challenges in its retail pharmacy business "have intensified, forcing the company to search for other avenues of growth." Jones also keeps a Neutral rating on CVS Health (CVS) and Sell rating on Rite Aid (RAD).