obviously if company were well run stock wouldn't have dropped so much. Yet, I suspect prior to IPO management ran company by PR releases and now they are focused on real science, the clinical trials. This in ST had dropped the price but if trials go positively they'll be a nice pop up and many shorts will lose quite a bit. nothing against shorts, this is a speculative investment for me--if it goes to zero I lose a little but upside for this breakthrough technology could be huge. On the other hand I do not see the point in shorting a stock like TNGN--at most one can gain 50 cents a share but it is very unlikely that stock could go to zero. But a short could lose their shirt on sudden jumps. Nothing wrong with shorting, perse, but when I short I do it on large cap fairly predictable stocks.