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Risk and return of U.S. water transportation stocks over time and over bull and bear market conditions

Manolis Kavussanos () and Stelios N. Marcoulis
Authors registered in the RePEc Author Service: Stelios Markoulis ()

Maritime Policy & Management, 1997, vol. 24, issue 2, 145-158

Abstract: The aim of this paper is to investigate the behaviour of water transportation company stock returns in the U.S. stock exchanges from 1985 to 1994 in order to determine whether the systematic risk of this industry is different from that of the ‘average’ company in the market, whether it has changed over the ten year period, over bull and bear market conditions, and whether there is a firm ‘size’ effect in the industry. In the context of the Capital Asset Pricing Model ( Capm ), we find that the systematic risk of the shipping industry return is not different from that of the ‘average’ company. It is also found that the covariance of water transportation companies with respect to the overall stock market return did not change over the ten year period although it appears that it has changed over normal upward/downward market movements. There is also reasonable evidence that the intercept of the equation might have changed over normal upward/downward market movements. Finally, we document contradictory evidence regarding the size effect; during the period 1985--1989 we find small companies to have significantly higher returns and risk while during the period 1990--1994 medium size companies tend to have higher risk than small and large firms, which is not however compensated by higher returns.

Date: 1997
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