Why was GTAT's pricing so erratic this year? Today's WSJ lists huge shorting losses suffered by hedge funds in 2013. Among those, GTAT was 22d ranked in short positions for 2013 (30%) among all companies, but enjoyed the 16th *highest increase* (90%) in price. Here is the article for those that can access it: online.wsj.com/article/SB10001424127887324108204579025343509727498.html?mod=WSJ_hpp_LEFTTopStories[tag]"Selling Short It has been a terrible year thus far for hedge funds and other investors betting against stocks"[/tag].
One can almost pity the shorts in Zillow: 7th ranked in short holdings, 222% increase.