Shares of Alphatec Holdings, Inc. (NASDAQ:ATEC – Get Free Report) traded up 8.1% during trading on Wednesday . The company traded as high as $11.22 and last traded at $11.19. 699,969 shares changed hands during trading, a decline of 57% from the average session volume of 1,646,881 shares. The stock had previously closed at $10.35. […]