Sinovac Biotech Ltd. Stock Surged Amid 'Hostile Takeover' By: Benzinga via Benzinga February 04, 2016 at 09:32 AM EST Shares of Sinovac Biotech Ltd. (NASDAQ: SVA) were trading up more than 13 percent in Thursday's pre-market session after the ... Read More >> Related Stocks: Macy's Sinovac Biotech Ltd