Exicure (NASDAQ:XCUR) stock is dropping on Monday after the prior early-stage pharmaceutical company’s shares underwent a rally on Friday.That rally resulted in shares of XCUR stock rising 76% higher during normal trading hours. With that came heavy trading as more than 14 million shares changed hands. That’s well above its daily average trading volume of about 536,000 shares.Exicure’s heavy trading came without any news from the company. It’s also worth noting that it currently has no significant operation ...