Shares of MAKO Surgical Corp. (NASDAQ:

) are higher on the session by 5.53%, trading at $20.04. Overall call volume is now running at 6.76x the daily average, with 28% of all calls traded being purchases on the offer. 2,238 contracts have traded on the session so far. MAKO Surgical Corp. is a medical device company that markets its advanced robotic arm solution and orthopedic implants for minimally invasive orthopedic knee procedures.