Portola Pharmaceuticals (PTLA) May Report Negative Earnings: Know the Trend Ahead of Next Week's ReleaseZacks Investment Research • 07/31/19
Portola Pharmaceuticals' (PTLA) CEO Scott Garland on Q1 2019 Results - Earnings Call TranscriptSeeking Alpha • 05/08/19
Portola Pharmaceuticals (PTLA) Reports Q1 Loss, Tops Revenue EstimatesZacks Investment Research • 05/08/19