Linear Information Dynamics, Dividend Irrelevance, Corporate Valuation and the Clean Surplus Relationship

This paper adopts the linear information dynamics framework pioneered in Ohlson (1979) and Garman and Ohlson (1980) (and subsequently used in, in particular, Ohlson, 1989, 1995 and Feltham and Ohlson, 1995) for thinking about desirable properties of earnings numbers in the context of the market valuation of firms, where such valuations are fundamentally based on expected future dividends. The first purpose of this paper is to consider the valuation-relevance of clean surplus earnings when there are two distinct components of clean surplus earnings whose evolutions are governed, along with book value and dividends, by a system of linear information dynamics, and dividend irrelevancy holds. The system of linear information dynamics assumed ensures that corporate value is a linear combination of the two components of clean surplus earnings, book value and dividends. One question becomes—under what circumstances are clean surplus earnings (combined with book value and dividends) sufficient for corporate valuation without a knowledge of the breakdown of clean surplus earnings into its separate components? This paper develops the conditions defining these circumstances. At the other extreme, another question can be asked—under what circumstances is one component of clean surplus earnings irrelevant to corporate valuation? This paper identifies some conditions that identify these latter circumstances. The second purpose of the paper is to identify implications of these results for both the traditional arguments about the desirability of measuring earnings on a clean surplus basis and also the more contemporary issues surrounding FRS3. A third purpose is to discuss the implications of the overall analysis for the empirical testing of the relationship between market prices and earnings numbers, and for empirically-justified definitions of maintainable earnings.