The payment and size of dividends have long been matters of debate in corporate finance. Under conditions of symmetric information and taxes, dividends have been dubbed a puzzle [Black (1976)]. Several authors model dividend policy under the assumption that information is distributed asymmetrically between managers and investors. Bhattacharya (1979, 1980) argues that firms pay dividends because dividends signal the private information of managers and thus help market participants value the firm. Ambarish, John and Williams (1987) suggest that high value firms choose investment and dividends jointly to separate themselves from low value firms. In other words, dividends are not a residual payment as implied by classical finance theory. John and Williams (1985) and Ambarish, John and Williams (1987) predict a positive association between dividends and stock prices. John and Nachman (1987) describe dividends as a “coarse signal of earnings.” Miller and Rock (1985) argue that once the investment decision of a firm is made, unanticipated dividends signal changes in earnings and cash flows. These models differ in the details of their assumptions and approach, but reach the same broad conclusion: firms pay dividends to convey information to investors that cannot be conveyed costlessly and credibly in other ways.
Empirical evidence supports the signaling function of dividends. Asquith and Mullins (1983) find that the initiation of dividends has a significant positive impact on the firm’ s stock price. They interpret their evidence as consistent with the signaling hypothesis in that managers use dividends to communicate private information to investors, and investors react favorably. Richardson, Sefcik and Thompson (1986) report similar evidence.