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In this paper, we examine the performance of a sample of fifteen U.S.-based internationally diversified mutual funds between 1982 and 1988. Two performance measures are used, the Jensen measure and the positive period weighting measure proposed by Grinblatt and Titman. We find no evidence that the funds, either individually or as a whole, provide investors with performance that surpasses that of a broad, international equity index over this sample period. 相似文献
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This paper examines the illiquidity of corporate bonds and its asset‐pricing implications. Using transactions data from 2003 to 2009, we show that the illiquidity in corporate bonds is substantial, significantly greater than what can be explained by bid–ask spreads. We establish a strong link between bond illiquidity and bond prices. In aggregate, changes in market‐level illiquidity explain a substantial part of the time variation in yield spreads of high‐rated (AAA through A) bonds, overshadowing the credit risk component. In the cross‐section, the bond‐level illiquidity measure explains individual bond yield spreads with large economic significance. 相似文献
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JACK HIGH 《Contemporary economic policy》1984,3(2):21-34
Judge Robert Bork holds two opposing attitudes towards perfect competition. It is a highly useful economic model for illustrating allocative efficiency, but it is a defective policy model because it deliberately omits productive efficiency. He reconciles these attitudes by combining perfectly competitive allocative efficiency with dynamically competitive productive efficiency in his analysis.
However, these two kinds of competition do not readily mix. One is a static equilibrium concept, the other a dynamic disequilibrium concept. One assumes perfect knowledge and the absence of change; the other assumes imperfect knowledge, learning, and continual flux. Each kind of competition is built on assumptions which, if true, would preclude the existence of the other.
Bork's policy conclusions require the simultaneous existence of both kinds of competition. If he drops dynamic competition from the analysis, a much more stringent antitrust policy is called for. If he drops static competition, economic theory does not justify even his strictures against mergers and cartels. 相似文献
However, these two kinds of competition do not readily mix. One is a static equilibrium concept, the other a dynamic disequilibrium concept. One assumes perfect knowledge and the absence of change; the other assumes imperfect knowledge, learning, and continual flux. Each kind of competition is built on assumptions which, if true, would preclude the existence of the other.
Bork's policy conclusions require the simultaneous existence of both kinds of competition. If he drops dynamic competition from the analysis, a much more stringent antitrust policy is called for. If he drops static competition, economic theory does not justify even his strictures against mergers and cartels. 相似文献