 Invesco Ltd. lowered its holdings in PDL BioPharma Inc NASDAQ:PDLI by 29.9 during the first quarter, according to the company in its most recent filing with the SEC. The fund owned 639,091 shares of the biotechnology companys stock after selling 272,767 shares during the quarter. Invesco Ltd. owned about 0.55 of PDL BioPharma worth 1,802,000 ... 