I intend to answer this question from both a fundamental and chart perspective. On a fundamental valuation, I will stick to the process Prof. Damodaran (NYU Stern) uses in determining value. The intent of this analysis will be to determin a view on trading/investing in this company for a long term holding (+6 month). If both views show a basis agreement, it would be prudent on my part to put my capital to work on those findings.
From a chart perspective, my opinion is a sell - and that has been the case for the past couple of months when looking at a weekly price trend. However, a monthly price chart will reveal the share price has been knocked down to relative lows and nearing ranges not since it IPO'ed. From that view it would be time to start considering opportunities, if they present themselves to go long, and seeing if the trend manages to reverse. Initiating shorts may less fruitful now given that the price drop has panned out in terms of magnitude and time.
I will update this in some time to include the valuation based on the fundamentals.