Buy Sierra Oncology Ahead Of A 2018 Full Of Catalysts By: Benzinga via Benzinga October 23, 2017 at 11:49 AM EDT Jefferies upgraded shares of Sierra Oncology Inc (NASDAQ: SRRA) ahead of a catalysts-rich 2018. The firm said the company's ... Read More >> Related Stocks: Array Technologies Inc Eli Lilly Sierra Oncology Inc