In this paper, we examine the input-output efficiency of United Kingdom CPA firms using the Data Envelopment Analysis (DEA) approach. We find that a majority of CPA firms in the United Kingdom appear not to be efficient on a yearly basis, and we further find no evidence of persistent efficiency...

We re‐examine the performance of Commodity Trading Advisors (CTAs) over the January 1995 to October 2008 period. We compare abnormal performance based on a number of alternative existing models, as well as a category‐specific model introducing asset‐, option‐, and moments‐based...

This article investigates the mortality of Commodity Trading Advisors (CTAs) over the 1990–2003 period, a longer horizon than any encompassed in the literature. A detailed survival analysis over the full range of CTA classifications is provided, and it is found that the median lifetime of CTAs...