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Title: A Change of Focus: Stock Market Classification in the UK
Authors: Mase, B
Issue Date: 2003
Publisher: Brunel University
Citation: Economics and Finance Working papers, Brunel University, 03-23
Abstract: This paper examines the impact of a change of focus by a firm, as signified by stock market reclassification. It distinguishes between sector reclassifications that are motivated by information specific to a particular firm, and those that result from sector redefinitions and reorganisations. The direction of the price effects following reclassification depends significantly upon this distinction. Moreover, for firm-specific reclassifications, the negative price effect is greater where the firm has been underperforming its sector, suggesting that investors may be sceptical about the motives underlying a change of focus. Furthermore, a stock’s return comovement with the FTSE All-Share Index may be affected by it being reclassified into a new sector. This change in return comovement is consistent with the allocation of stocks into categories, as discussed by Barberis and Shleifer (2003). Reclassification can induce common factors in the returns to stocks in an index without there being any change in these stocks’ fundamental cash flows.
Appears in Collections:Dept of Economics and Finance Research Papers

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