2015
DOI: 10.1111/jbfa.12094
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Information and the Cost of Capital in a Mean‐Variance Efficient Market

Abstract: Before information ϕ arrives, market observers must be uncertain whether the stock price conditioned on ϕ will be higher or lower than the current price. Otherwise there is an obvious arbitrage opportunity. By assuming this minimal condition of efficient markets, it is shown under the mean‐variance CAPM that information that leaves the future value of a firm more certain, in the sense that its perceived covariance with the market is reduced towards zero, can lead to a higher expected return on that asset. A fu… Show more

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Cited by 37 publications
(39 citation statements)
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“…For example, Johnstone (2014) shows that if information also changes the assessments about the mean of firm value, the cost of capital can increase when information precision increases. As another example, Clinch and Verrecchia (2011) show that the cost of capital can increase if disclosure increases because of a voluntary choice (instead of a commitment to more transparency as shown in Lambert et al, 2007).…”
Section: Effects Of Disclosure Quality and Inside Ownership On The Comentioning
confidence: 99%
“…For example, Johnstone (2014) shows that if information also changes the assessments about the mean of firm value, the cost of capital can increase when information precision increases. As another example, Clinch and Verrecchia (2011) show that the cost of capital can increase if disclosure increases because of a voluntary choice (instead of a commitment to more transparency as shown in Lambert et al, 2007).…”
Section: Effects Of Disclosure Quality and Inside Ownership On The Comentioning
confidence: 99%
“…Our segment disclosure proxy also controls for the determinants of the difficulty in estimating future earnings. Also, from the findings in Johnstone (2013), one could argue that improved disclosure could lead to higher cost of capital because of the unveiling of certain operational or financial risks. Again, we define our segment disclosure score to control for different types of risk.…”
Section: Introductionmentioning
confidence: 99%
“…Levitt, 1998;Foster, 2003;Christensen et al, 2010). The correct view, shown by Lambert et al (2007), Gao (2010) and Johnstone (2013Johnstone ( , 2015Johnstone ( , 2016 along effectively identical lines to Fama, is that even if indeed the assessed pay-off covariance does fall on receipt of new information, 9 the rational CAPM cost of capital might still increase as that new information can, if it is unfavourable, bring a sufficient reduction in the perceived mean pay-off. These fundamental pay-off parameters are assessed subjectively based on all existing and new information, including historical data, and can each change in either direction with new information.…”
Section: Information and The Discount Ratementioning
confidence: 91%