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- W3138958745 abstract "The Heteroskedastic Mixture Model (HMM) of Lamoureux, and Lastrapes (1990) is extended, relaxing the restriction imposed on the mean i.e. μ t-1=0. Instead, an exogenous variable rm, along with its vector β m, that predicts return rt is introduced to examine the hypothesis that the volume is a measure of speed of evolution in the price change process in capital asset pricing. The empirical findings are documented for the hypothesis that ARCH is a manifestation of time dependence in the rate of information arrival, in line with the observations of Lamoureux, and Lastrapes (1990). The linkage between this time dependence and the expectations of market participants is investigated and the symmetric behavioural response is documented. Accordingly, the tendency of revision of expectation in the presence of new information flow whose frequency as measured by ‘volume clock’ is observed. In the absence of new information arrival at the market, investors tend to follow the market on average. When new information is available, the expectations of investors are revised in the same direction as a symmetric response to the flow of new information arrival at the market." @default.
- W3138958745 created "2021-03-29" @default.
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- W3138958745 date "2017-01-07" @default.
- W3138958745 modified "2023-09-23" @default.
- W3138958745 title "Information Flow Interpretation of Heteroskedasticity for Capital Asset Pricing: An Expectation-Based View of Risk" @default.
- W3138958745 hasPublicationYear "2017" @default.
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