 Antares Pharma Inc shares NASDAQ: ATRS are up 45 on Wednesday after Halozyme Therapeutics said it will buy the New Jersey-headquartered company for 960 million in cash. Details of the agreement The deal translates to 5.60 per share for Antares Pharma shareholders that translates to a close to 50 premium on where the stock closed ... The post Antares Pharma Inc shares up 45 on Wednesday: how come? 