TY - JOUR AU - Golosov,Mikhail AU - Lorenzoni,Guido AU - Tsyvinski,Aleh TI - Decentralized Trading with Private Information JF - National Bureau of Economic Research Working Paper Series VL - No. 15513 PY - 2009 Y2 - November 2009 UR - http://www.nber.org/papers/w15513 L1 - http://www.nber.org/papers/w15513.pdf N1 - Author contact info: Mikhail Golosov Department of Economics Princeton University 111 Fisher Hall Princeton, NJ 08544 Tel: 609/258-4003 Fax: 609/258-6419 E-Mail: golosov@princeton.edu Guido Lorenzoni MIT Department of Economics E52-251C 50 Memorial Drive Cambridge, MA 02142-1347 Tel: 617/253-4836 Fax: 617/253-1330 E-Mail: glorenzo@mit.edu Aleh Tsyvinski Department of Economics Yale University Box 208268 New Haven, CT 06520-8268 E-Mail: a.tsyvinski@yale.edu AB - The paper studies asset pricing in informationally decentralized markets. These markets have two key frictions: trading is decentralized (bilateral), and some agents have private information. We analyze how uninformed agents acquire information over time from their bilateral trades. In particular, we show that uninformed agents can learn all the useful information in the long run and that the long-run allocation is Pareto efficient. We then explore how informed agents can exploit their informational advantage in the short run and provide sufficient conditions for the value of information to be positive. Finally, we provide a numerical analysis of the equilibrium trading dynamics and prices. ER -