Go to Stockcharts.com and research dozens of stocks on the daily and weekly charts.Look at the patterns and ask yourself if ZEN is way above this.Everything hits a peak.You have to decide if ZEN has peaked,and trade accordingly.
The market is a strange animal these days,and profits are being taken no matter what the story is.Smart investors look at all angles and know when to move on.
I will say that,imo,only an oversold correction kept this from dropping further this week.Now,imo,the correction has brought all the chart signals in line again,and the drop will now continue.
I believe the story itself is a nice story,but you have to separate the company from the stock.
I have no idea where the price will end up.But,it's obvious this isn't the place.