TY - JOUR AU - Martin,Philippe AU - Rey,Helene TI - Financial Super-Markets: Size Matters for Asset Trade JF - National Bureau of Economic Research Working Paper Series VL - No. 8476 PY - 2001 Y2 - September 2001 UR - http://www.nber.org/papers/w8476 L1 - http://www.nber.org/papers/w8476.pdf N1 - Author contact info: Philippe Martin Sciences Po 27, rue Saint-Guillaume 75007 Paris France E-Mail: philippe.martin@sciences-po.fr Helene Rey London Business School Regents Park London NW1 4SA UNITED KINGDOM Tel: 44 2070008412 E-Mail: hrey@london.edu AB - We introduce a new theoretical framework to analyze imperfectly competitive financial markets and trade in assets in an international context. We present a two-country macroeconomic model in which agents are risk averse, assets are imperfect substitutes, the number of financial assets is endogenous, and cross-border asset trade entails transaction costs. We show that demand effects have important implications for the link between market size, asset prices and financial market development. These effects are consistent with existing empirical evidence. Due to co-ordination failures, the extent of financial market incompleteness is inefficiently high. We also analyze the impact of domestic transaction costs and issuing costs on financial markets and returns. ER -