QVT Financial added 301K shares and now owns a 5.2% stake (up from 3.7%), according to a 13G filing today: http://www.sec.gov/Archives/edgar/data/1274644/000119312515352159/d53315dsc13g.htm (new filing) http://www.sec.gov/Archives/edgar/data/1274644/000119312515044124/d869223dsc13ga.htm (prior filing)