Scale-invariant asset pricing and consumption/portfolio choice with general attitudes toward risk and uncertainty

Motivated by notions of aversion to Knightian uncertainty, this paper develops the theory of competitive asset pricing and consumption/portfolio choice with homothetic recursive preferences that allow essentially any homothetic uncertainty averse certainty-equivalent form. The market structure is scale invariant but otherwise general, allowing any trading constraints that scale with wealth. Technicalities are minimized by assuming a finite information tree. Pricing restrictions in terms of consumption growth and market returns are derived and a simple recursive method for solving the corresponding optimal consumption/portfolio choice problem is established.     

Games with finite resources

Games with Finite Resources as defined by Gale (1957) are two-person zero-sum N-stage games in which each player has N resources and may use each resource once and only once in the N stages. Gale's theorem on these games is generalized in several directions. First the payoff is allowed to be any symmetric function of the stage payoffs. Second, the players are allowed some latitude in choosing which game is being played. Applications are given to some open questions in the area of Inspection Games. Finally the payoff is allowed to be random, thus incorporating a result of Ross (1972) on Goofspiel. Application is made to a game-theoretic version of the Generalized House Selling Problem. Received August 1999/revised version March 2000