TY - JOUR AU - Kemp,Murray C. AU - Sinn,Hans-Werner TI - A Simple Model of Useless Speculation JF - National Bureau of Economic Research Working Paper Series VL - No. 3513 PY - 1990 Y2 - November 1990 UR - http://www.nber.org/papers/w3513 L1 - http://www.nber.org/papers/w3513.pdf N1 - Author contact info: Hans-Werner Sinn Ifo Institute - Leibniz Institute for Economic Research at University of Munich Poschingerstr. 5 81679 Munich GERMANY Tel: 49-89-21802748 Fax: 49-89-397303;49-89-8506434 (home) E-Mail: sinn@ifo.de AB - The paper presents a general equilibrium model of a pure exchange economy with stochastic endowment in which speculation is profitable and stabilizes prices, but is useless from a welfare point of view. Reconciling the Siegel paradox with the theory of incomplete markets we show that banning speculation by closing the forward exchange market may increase social welfare. ER -