 Alliancebernstein L.P. increased its holdings in shares of Principia Biopharma Inc NASDAQ:PRNB by 618.7 during the 4th quarter, according to the company in its most recent 13F filing with the Securities Exchange Commission. The firm owned 90,557 shares of the companys stock after buying an additional 77,957 shares during the period. Alliancebernstein L.P. owned ... 