Halozyme Surrenders Most Of Its Pre-Market Gains By: Benzinga via Benzinga January 05, 2017 at 11:59 AM EST Halozyme Therapeutics, Inc. (NASDAQ: HALO) shares are trading higher by $1.31 at $12.00 in Thursday's session. The issue spiked to ... Read More >> Related Stocks: Bio-Techne Corp Halozyme Therapeutic