Shares of Halozyme Therapeutics (HALO) fall 23.1% premarket before tripping up circuit breakers....

|About: Halozyme Therapeutics, Inc. (HALO)|By:, SA News Editor

Shares of Halozyme Therapeutics (HALO) fall 23.1% premarket before tripping up circuit breakers. All the fuss is over an announcement from the company that says the FDA requested more information on its HyQ Biologics Application before it can complete its review.