Assenagon Asset Management S.A. raised its holdings in shares of Regeneron Pharmaceuticals, Inc. (NASDAQ:REGN – Free Report) by 129.3% in the fourth quarter, according to its most recent Form 13F filing with the SEC. The institutional investor owned 216,523 shares of the biopharmaceutical company’s stock after buying an additional 122,103 shares during the period. Regeneron […]