In August 2014 the May 2013 high was tested and failed. This followed a good linear trend which started in February and really got going as it broke through the 200ma. Pullbacks were neat until the retest of $18.80 in August - which was followed by a much deeper pullback which breeched the and tested the 200ma.
On Friday price broke through $18.80 and Monday's bar continued the momentum to the upside. From a small pullback onwards there could signal a buy.