Knowledge that Transforms

This study finds a bibliometric regularity in the finance literature that the number of authors publishing n papers is about of those publishing one paper. We find that the finance literature conforms very well to the inverse square law if data are taken from a large collection of journals. When applied to individual finance journals, we find that values of c range from 1.95 to 3.26. We also find that top‐rated journals have higher concentrations among their contributors. This implies that the phenomenon “success breeds success” is more common in higher quality publications.

This paper finds a high correlation between the open to close returns for U.S. stocks in the previous trading day and the Japanese equity market performance in the current period. In contrast, the Japanese market has only a small impact on the U.S. return in the current period. High correlations among open to close returns are a violation of the efficient market hypothesis; however, in trading simulations, the excess profits in Japan vanish when transactions costs and transfer taxes are included.

Over the past decade, Sanford Grossman's contributions to the economics of information have significantly altered the way economists think about rational expectations. Here his articles are collected in one place, providing a uniform framework for understanding how prices convey information in securities markets. Grossman elaborates a new model of economic equilibrium that casts a dual role for prices both as constraints that affect the immediate costs or benefits of acts and as conveyers of information about the probable future costs and benefits of those acts. He points to the Wall Street panic of October 1987 as an example of the informational role of prices where volatility actually represented sophisticated trading strategies by relatively uninformed individuals.

Using daily and monthly stock returns we find no convincing evidence that Federal Reserve margin requirements have served to dampen stock market volatility. The contrary conclusion, expressed in recent papers by Hardouvelis (1988a , b ), is traced to flaws in his test design. We do detect the expected negative relation between margin requirements and the amount of margin credit outstanding. We also confirm the recent finding by Schwert (1988) that changes in margin requirements by the Fed have tended to follow rather than lead changes in market volatility.

Some closed‐end country funds trade at large premiums relative to their net asset values. This paper examines whether international investment restrictions raise country fund price‐net asset value ratios by segmenting international capital markets. We test whether a relation exists between announcements of changes in investment restrictions and changes in these ratios using weekly data from May 1981 to January 1989. The results provide evidence that some foreign markets are at least partially segmented from the U.S. capital market.

This paper presents evidence that the distribution of target ownership is related to the division of the takeover gain between the target and the bidder for a sample of successful tender offers. In the whole sample, the target's gain is negatively related to bidder and institutional ownership. In the sample of multiple‐bidder contests, the target's gain increases with managerial ownership and falls with institutional ownership.

We examine the CBOE option market depth and bid‐ask spreads. Absence of price effects surrounding large option trades suggests excellent market depth. However, bid‐ask spreads for the CBOE options and the NYSE stocks are nearly equal, even though an average option is equivalent to less than half a stock plus borrowing. We explain this tradeoff between market depth and bid‐ask spreads on the CBOE and the NYSE by differences in market mechanisms. We also show that the adverse‐selection component of the option spread, which measures the extent of information‐related trading on the CBOE, is very small.

This paper provides empirical support for the notion that Autoregressive Conditional Heteroskedasticity (ARCH) in daily stock return data reflects time dependence in the process generating information flow to the market. Daily trading volume, used as a proxy for information arrival time, is shown to have significant explanatory power regarding the variance of daily returns, which is an implication of the assumption that daily returns are subordinated to intraday equilibrium returns. Furthermore, ARCH effects tend to disappear when volume is included in the variance equation.

Few prediction schemes have been more accurate, and at the same time more perplexing, than the Super Bowl Stock Market Predictor, which asserts that the league affiliation of the Super Bowl winner predicts stock market direction. In this study, we examine the record and statistical significance of this anomaly and demonstrate that an investor would have clearly outperformed the market by reacting to Super Bowl game outcomes.