This study examines the behavior of a small stock market with circuit breakers and with a one-hour preauction order imbalance disclosure during the October 1987 crash. The crash and its aftershocks lasted for a week and selling pressure was concentrated in higher beta, larger capitalization, and lower leverage firm stocks. Circuit breakers when implemented reduced the next-day opening order imbalance and the initial price loss; however, they had no effect on the long-run response. Some price overreaction and reversal phenomena also are documented.

In a recent article in this journal, Professors Sinai and Stokes (1972) presented a very interesting test of the hypothesis that money enters the production function, and they suggest that real balances could be a missing variable that has contributed to the unexplained 'residual' being attributed to technological The theory of induced innovation, as presented by Fellner (1961) and Schmookler (1966), suggests that market conditions affect the demand for innovation and the realized technological changes. Since money may be regarded as a proxy for short-run fluctuations in the aggregate demand, this theory suggests that money affects output and technological changes as a demand factor rather than as a factor of production. In this note, we suggest the appropriate tests to distinguish between the two alternative hypotheses, and present some empirical results.

The last decade has witnessed significant advancements in capital theory and its application to corporate finance, investment policy, and portfolio analysis. More recently a growing body of empirical work has undertaken the task of systematically testing the positive implications of the theory. The study of risk has occupied a central position in this endeavor as it provides the link between the various branches of finance theory. The purpose of this paper is to investigate the empirical determinants of equity risk through the analysis of the firm's underlying characteristics, specifically, the firm's size, its financial leverage, and its dividend record. Section I summarizes the literature, Section II provides the theoretical framework, Section III describes the empirical model and the data, Section IV presents the statistical results, Section V analyzes the effect of excluded variables, and Section VI provides a summary and conclusions. I. Empirical Literature on Risk The following survey is not exhaustive; it intends to trace the direction

Uri Bex-Zion, Michael Balch; On the Analysis of Corporate Financial Theory under Uncertainty: A Comment*, The Quarterly Journal of Economics, Volume 87, Is