Knowledge that Transforms

Abstract A growing literature documents that various strategies of rotating across equity styles generate significant returns. However, the conventional risk adjustment regression is problematic in evaluating the gains from style rotation. I propose a weight-based multifactor risk adjustment approach as a solution. When interpreted as a performance attribution procedure, this approach extends Sharpe's (1992) classic method by emphasizing factor loading rotation. I use a logit-based timing strategy to show that the conventional procedure produces misleading results and the new method leads to the opposite conclusion.

Abstract Given the exogenous price process of some assets, we constrain the price process of other assets that are characterized by their final payoffs. We deal with an incomplete market framework in a discrete-time model and assume the existence of the equilibrium. In this setup, we derive restrictions on the state-price deflators. These restrictions do not depend on a particular choice of utility function. We investigate numerically a stochastic volatility model as an example. Our approach leads to an interval of admissible prices that is more robust than the arbitrage pricing interval.

Abstract For firms that adopted economic profit plans between 1983 and 1996, we document changes in investment behavior that lead to improvements in operating performance and growth opportunities relative to these firms' past performance. The improvements, however, are similar to those realized by a set of non-adopting control firms that are selected on the basis of a logistic regression model of adoption choice. We then consider the possibility that some firms are better candidates for economic profit plans than others and classify adopters according to whether they make anticipated or surprising choices based on the adoption choice model. We find that anticipated adopters make changes in investment behavior that reduce invested capital and allow them to become more profitable than a sample of control firms that were expected to adopt but chose to continue using a traditional plan. A similar analysis of surprise adopters does not reveal significant performance differences relative to a sample of anticipated non-adopters. The classification analysis suggests that economic profit plans work best for firms that are expected to adopt such plans based on pre-adoption operating, organizational, financial, and compensation characteristics.

Abstract This paper uses a volatility decomposition method to study the time-series behavior of equity volatility at the world, country, and local industry levels. Between 1974 and 2001, there is no noticeable long-term trend in any of the volatility measures. Then in the 1990s there is a sharp increase in local industry volatility compared to market and country volatility. Thus, correlations among local industries have declined. More assets are needed to achieve a given level of diversification, and there is more of a penalty for not being well diversified by industry. Local industry volatility leads the other volatility measures.