Suitability is one of the most common issues that arises in securities arbitrations. Yet it is also one of the most difficult issues to resolve. Up to now there has been no easy and reliable way to compare the risk of one stock or portfolio with another stock or portfolio measured as of the time...

This dissertation is based on the hypothesis that a third dimension, namely investmenttime horizon, can add value to the more conventional two-dimensional methodologyof assessing the relative risk and return attributes of various assets and portfolios inorder to enhance investment decisions.This...