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Author: Robin Marc Greenwood Publisher: ISBN: Category : Languages : en Pages : 46
Book Description
In the presence of limits to arbitrage, cross-sectional variation in periodic investor demand should be related to the degree of comovement of returns. I exploit the unusual weighting system of the Nikkei 225 index in Japan to identify cross-sectional variation in periodic demand for index stocks. Relative to their weights in a value weighted index, some stocks in the Nikkei are overweighted by a factor of ten or more. Using overweighting as an instrument for the proportionality between demand shocks for index stocks, I find a strong positive relation between overweighting and the comovement of a stock with other stocks in the index, and a negative relationship between index overweighting and comovement with stocks outside of the index. Put simply, overweighted stocks have high betas. The results suggest that excess comovement of stock returns is a consequence of an institutionalized commonality in trading behavior, rather than inefficiencies related to the speed at which index stocks incorporate economy-wide information.
Author: Robin Marc Greenwood Publisher: ISBN: Category : Languages : en Pages : 46
Book Description
In the presence of limits to arbitrage, cross-sectional variation in periodic investor demand should be related to the degree of comovement of returns. I exploit the unusual weighting system of the Nikkei 225 index in Japan to identify cross-sectional variation in periodic demand for index stocks. Relative to their weights in a value weighted index, some stocks in the Nikkei are overweighted by a factor of ten or more. Using overweighting as an instrument for the proportionality between demand shocks for index stocks, I find a strong positive relation between overweighting and the comovement of a stock with other stocks in the index, and a negative relationship between index overweighting and comovement with stocks outside of the index. Put simply, overweighted stocks have high betas. The results suggest that excess comovement of stock returns is a consequence of an institutionalized commonality in trading behavior, rather than inefficiencies related to the speed at which index stocks incorporate economy-wide information.
Author: Jarl G. Kallberg Publisher: ISBN: Category : Languages : en Pages : 41
Book Description
This paper is an empirical investigation of the excess comovement of industry indexes in the U.S. stock market over the period January 1973 to December 2001. We define excess comovement as the correlation between two assets beyond what could be explained by fundamental factors. In our analysis, the fundamental factors are sector groupings and the three Fama-French factors. We then estimate excess comovement as the mean absolute correlation of residuals of univariate (OLS) or joint (FGLS) regressions of these fundamentals on industry returns. We show that excess unconditional comovement is surprisingly high (a lower bound of 0.134 and an upper bound of 0.357) and represents between 31% and 83% of the average raw absolute correlation. Excess comovement is also consistently significant across industries and over our entire sample interval. Furthermore, we find that the degree of excess comovement is symmetric, i.e., not significantly different in rising or falling markets. We explain approximately 21% of this excess correlation by its positive relation to market volatility, and reveal a negative relation of its lower bound to the level of the short-term interest rate.
Author: Mathias Külpmann Publisher: Springer Science & Business Media ISBN: 3540247653 Category : Business & Economics Languages : en Pages : 233
Book Description
Mathias Külpmann presents a framework to evaluate whether the stock market is in line with underlying fundamentals. The new and revised edition offers an up to date introduction to the controversy between rational asset pricing and behavioural finance. Empirical evidence of stock market overreaction are investigated within the paradigms of rational asset pricing and behavioural finance. Although this monograph will not promise the reader to become a millionaire, it offers a road to obtain a deeper understanding of the forces which drive stock returns. It should be of interest to anyone interested in what drives performance in the stock market.
Author: Honghui Chen Publisher: ISBN: Category : Rate of return Languages : en Pages : 51
Book Description
Recent evidence of excessive comovement among stocks following index additions (Barberis, Shleifer, and Wurgler, 2005) and stock splits (Green and Hwang, 2009) challenges traditional finance theory. Based on a simple model, we show that the bivariate regressions relied upon in the literature often provide little or no information about the economic magnitude of the phenomenon of interest, and the coefficients in these regressions are very sensitive to time-variation in the characteristics of the return processes that are unrelated to excess comovement. Instead, univariate regressions of the stock return on the returns of the group it is leaving (e.g., non-S&P stocks) and the group it is joining (e.g., S&P stocks) reveal the relevant information. When we reexamine the empirical evidence using control samples matched on past returns and compute Dimson betas, almost all evidence of excess comovement disappears. The results in the literature are consistent with changes in the fundamental factor loadings of the stocks. One key element to understanding these striking results is that, in both the examples we study, the stocks exhibit strong returns prior to the event in question. We document the heretofore unknown empirical regularity that winner stocks exhibit increases in betas. Thus, much of the apparent excess comovement is just a manifestation of momentum.
Author: Nathan Sosner Publisher: ISBN: Category : Languages : en Pages :
Book Description
In April 2000, 30 stocks were replaced in the Nikkei 225 Index. The unusually broad index redefinition allowed for a study of the effects of index-linked trading on the excess comovement of stock returns. A large increase occurred in the correlation of trading volume of stocks added to the index with the volume of stocks that remained in the index, and opposite results occurred for the deletions. Daily index return betas of the additions rose by an average of 0.45; index return betas of the deleted stocks fell by an average of 0.63. Theoretical predictions for changes in autocorrelations and cross-serial correlations of returns of index additions and deletions were confirmed. The results are consistent with the idea that trading patterns are associated with short-run excess comovement of stock returns.
Author: Jeffrey A. Frankel Publisher: University of Chicago Press ISBN: 0226260216 Category : Business & Economics Languages : en Pages : 428
Book Description
This timely volume addresses three important recent trends in the internationalization of United States equity markets: extensive market integration through foreign investment and links among stock prices around the world; increasing securitization as countries such as Japan come to rely more than ever before on markets in equities and bonds at the expense of banks; and the opening of national financial systems of newly industrializing countries to international financial flows and institutions, as governments remove capital controls and other barriers. Eight essays examine such issues as the current extent of international market integration, gains to U.S. investors through international diversification, home-country bias in investing, the role of time and location around the world in stock trading, and the behavior of country funds. Other, long-standing questions about equity markets are also addressed, including market efficiency and the accuracy of models of expected returns, with a particular focus on variances, covariances, and the price of risk according to the Capital Asset Pricing Model.
Author: Robin Marc Greenwood
Author: Robin Marc Greenwood
Author: Jarl G. Kallberg
Author: Stijn Claessens
Author: Mathias Külpmann
Author: Vinod Chandrashekaran
Author: Honghui Chen
Author: Nathan Sosner
Author: 林琦
Author: Jeffrey A. Frankel
Author: Michael Hasler