Two things make, to me, Einhorn (GLRE) very hard to invest. First is performance fees without a high watermark and 2nd is the fact that he appears to be convexity/powerlaw blind and this leads him to throw money away shorting certain stocks
http://www.zerohedge.com/news/2017-07-13/15-greenlight-capital-investors-submit-redemption-requests
http://www.zerohedge.com/news/2017-07-13/15-greenlight-capital-investors-submit-redemption-requests