15 Biggest Mid-Day Losers For Tuesday By: Benzinga via Benzinga December 13, 2016 at 12:53 PM EST Proteon Therapeutics Inc (NASDAQ: PRTO) tumbled 74.3 percent to $2.55 after the company disclosed that it did not meet primary ... Read More >> Related Stocks: Alexion Pharmaceuticals Anavex Lf SC Apricus Biosc Inc Arbutus Biopharma Corp Atyr Pharma Inc Biodelivery Sci Intl Endologix Inc Hancock Whitney Corp Innovator Intl Developed Power Buffer ETF Nov Lifevantage Corp Littelfuse Inc National Storage Affiliates Tru Proteon Thera Com ST