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Review of Financial Studies

Опубликовано на портале: 22-10-2007
Anat R. Admati, Paul Pfleiderer Review of Financial Studies. 1989.  Vol. 2. No. 2. P. 189-223. 
This article develops a model in which pattern in buy and sell volume, order imbalances, and expected price changes arise endogenously. The model covers cases in which the market maker is competitive and is a monopolist. Our results provide an explanation for the existence of patterns in mean returns within the trading day and across trading days.
ресурс содержит полный текст, либо отрывок из него
Опубликовано на портале: 25-10-2007
Andrew W. Lo, A. Craig MacKinlay Review of Financial Studies. 1988.  Vol. 1. No. 1. P. 41-66. 
In this article we test the random walk hypothesis for weekly stock market returns by comparing variance estimators derived from data sampled at different frequencies. The random walk model is strongly rejected for the entire sampleperiod (1962-1985) and for all subperiods for a variety of aggregate returns indexes and size-sorted porfolios. Although the rejections are due largely to the behavior of small stocks, they cannot be attributed completely to the effects of infrequent trading or timevarying volatilities. Moreover, the rejection of the random walk for weekly returns does not support a mean-reverting model of assetprices.
ресурс содержит полный текст, либо отрывок из него