TY - JOUR AU - Gorton,Gary AU - Pennacchi,George TI - Security Baskets and Index-Linked Securities JF - National Bureau of Economic Research Working Paper Series VL - No. 3711 PY - 1991 Y2 - May 1991 UR - http://www.nber.org/papers/w3711 L1 - http://www.nber.org/papers/w3711.pdf N1 - Author contact info: Gary B. Gorton Yale School of Management 135 Prospect Street P.O. Box 208200 New Haven, CT 06520-8200 Fax: 203/432-8931 E-Mail: Gary.Gorton@yale.edu George Pennacchi College of Business University of Illinois 4041 BIF, Box 25, MC520 515 E. Gregory Drive Champaign, IL 61820 Tel: 2172440952 Fax: 2172443102 E-Mail: gpennacc@illinois.edu AB - Security baskets and index-lined securities are securities whose values are functions of the cash flows or values of other assets. Creation of these "composite" securities would seem to be redundant since investors can cost1ess1y replicate them. In this paper we study the existence and optimal design of composite securities. We first show that when some investors possess inside information, composite securities are not redundant. By holding composite securities, uninformed investors with unexpected needs to trade can reduce their expected losses to insiders. The existence of these securities will affect real investment decisions. We then show that when uniformed investors are heterogeneous with respect to nontradeable endowment risk, the size of such clienteles determines whether the portfolio for a liquidity trader consists of a clientele-specific composite or a single market composite combined with individual security holdings. In the latter case, markets for the composite security and its component securities coexist. No results depend on the existence of exogenous "noise" traders. ER -