Shares of Viking Therapeutics, Inc. (NASDAQ:VKTX – Get Rating) dropped 6.1% during mid-day trading on Friday . The stock traded as low as $20.46 and last traded at $20.48. Approximately 788,148 shares changed hands during trading, a decline of 77% from the average daily volume of 3,490,608 shares. The stock had previously closed at $21.80. […]