Shares of GoPro traded under $44 this afternoon following an early drop of 15%. The camera maker company is on track for its 1st loss since their debut last week. GoPro shares more than doubled in the past 4 sessions since their $24 IPO. Reaching a low of $41.53, tthe stock tripped a Nasdaq circuitbreaker. The wall Street Journal reports a rush by short sellers looking to borrow the stock, with the percentage available to loan being near 100%. Options on GoPro will start trading early July.