Biotech Stocks Underperform Market: CELG, EXEL, PBYI, XBI By: TalkMarkets May 10, 2018 at 18:52 PM EDT Biotechs underperformed despite a good opening with the XBI trying to break through the SMA 50 level but fell back around mid-day. Read More >> Related Stocks: ARMO BioSciences, Inc. - Common Stock AbbVie Agios Pharmaceuticals Arena Pharmaceuticals Array Technologies Inc Bluebird Bio Celgene Corp Clovis Oncology Inc Eli Lilly Exelixis Inc Ligand Pharm Nasdaq Biotechnology Ishares ETF Neurocrine Bioscienc Puma Biotechnology S&P Biotech SPDR