The goal of this paper is to examine the impact of 1975 Congressional mandate to integrate the trading of NYSE-listed stocks.

The threat of takeover acts to discipline managers, but it also makes shareholders' assurances to managers less reliable and so interferes with contrcting between them. These two effects have opposing implications about the level of executive compensation: the disciplinary effect implies a...

Implications of factor-based asset pricing models for estimation of expected returns and for portfolio selection are investigated. In the presence of model mispricing due to a missing risk factor, the mispricing and the residual covariance matrix are linked together. Imposing a strong form of...

This paper solves the equilibrium problem in a pure-exchange, continuous-time economy in which some agents face information costs or other types of frictions effectively preventing them from investing in the stock market. Under the assumption that the restricted agents have logarithmic...

Evidence of structural breaks in the historical return distribution raises concerns about averaging a long series to estimate the current equity premium. Data before a break are relevant if one believes that large shifts in the premium are unlikely or that the premium is associated, to some...

Implications of factor-based asset pricing models for estimation of expecte d returns and for portfolio selection are investigated. In the presence of model mispricing due to a missing factor, the mispricing and the residual covariance matrix are linked together. Imposing a strong form of this...

A commonly held view in the financial and economic literature if that "free cash flow is bad" in the sense that, given the opportunity, shareholders would always choose to minimize its existence. In this paper we challenge these widely-held beliefs and show that not only might shareholders...

We study the dynamic equilibrium behavior of security prices in an economy where nonfundamental risk arises from agents' heterogeneous beliefs about extraneous processes. We provide a complete characteriszation of equilibrium in terms of the primitives of the economy, via construction of a...

We use genetic algorithm to learn trading rules for the S&P 500 index using daily prices from 1928 to 1995. After transaction costs, the rules do not earn consistent excess returns over a simple buy-and-hold test periods.