Johan G. van der Galien 'Recent Bull Periods and the X-INDEX Effect' (Submitted February 2011) PREPRINT, DO NOT CITE, CALL FOR PEER REVIEWERS:
This article is about the question whether ranking on entropy, from measurements of securities stock quote distributions over historic bull periods, can help to compose profitability optimal portfolios for future bull periods. This feature will work if entropy has some kind of memory for profitable portfolios in the past, present and future (the X-INDEX effect). In this article I think I have provided some evidence for the existence of this memory effect. But I need an experts peer review and opinion. Thats why the article is still on the preprint server and not final.