Scandinavian Working Papers in Economics

Knut Wicksell Working Paper Series,
Lund University, Knut Wicksell Centre for Financial Studies

No 2013/6: An Empirical Test of the Optimal Disclosure Hypothesis

Håkan Jankensgård ()

Abstract: According to the cost-of-capital hypothesis, increased voluntary disclosure should reduce information asymmetries, lower the cost of capital, and increase firm value. The optimal-disclosure hypothesis, however, predicts that costs related to voluntary disclosure lead to the existence of an interior optimum of disclosure that maximizes firm value. These hypotheses are tested using disclosure indexes based on analysts’ ratings of firms’ financial reports for a sample of 181 Swedish firms. For annual reports, the data supports the optimal disclosure hypothesis, whereas for quarterly reports the findings suggest the existence of a “disclosure premium” in accordance with the cost of capital hypothesis.

Keywords: Voluntary disclosure; cost of capital; Tobins q; optimal disclosure

JEL-codes: G30; G32

44 pages, February 24, 2013

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