Information, Investment, and the Stock Market: A Study of Investment Revision Data of Japanese Manufacturing Industries
29 Pages Posted: 18 Jan 2007
Date Written: January 2007
Abstract
We examined investment behavior in the Japanese manufacturing ndustry using investment revision data to analyze investment behavior from a fresh angle. We tested the martingale investment hypothesis and then the q-theory of investment by looking at the response of stock return and investment to news arriving at firms. The martingale hypothesis was generally accepted, and we also found evidence for the validity of the q-theory hypothesis. Investment was responsive to profit rate revision and sales revision, but stock return responded only to profit rate revision. Further investigation revealed that investment was also motivated by xpansion of market share for sales, especially for industries with rapid technological progress.
Keywords: Investment revision, martingale, stock return, q theory, market share
JEL Classification: E22, E44
Suggested Citation: Suggested Citation
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