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Search in Asset Markets

Ricardo Lagos and Guillaume Rocheteau

No 869, 2006 Meeting Papers from Society for Economic Dynamics

Abstract: This paper investigates how the degree of trading frictions in asset markets affects portfolio allocations, asset prices, efficiency, and several measures of liquidity, such as execution delays, bid-ask spreads, and trade volumes. To this end, we generalize the search-theoretic model of financial intermediation of Duffie, Garleanu and Pedersen (2005) to allow for more general preferences and idiosyncratic shock structure, unrestricted portfolio choices, aggregate uncertainty, and entry of financial intermediaries (dealers). Investors are subject to shocks that periodically change their desired asset holdings, and contact dealers to rebalance their portfolios. Investors and dealers are matched bilaterally according to a stochastic, time-consuming process, and the latter have instantaneous access to a competitive (inter-dealer) market for the asset. We study the model with a fixed measure of dealers and show that a steady-state equilibrium exists and is unique. We provide a simple condition on preferences under which a reduction in trading frictions (e.g., a reduction in execution delays) will lead to an increase in the price of the asset. We also study the connection between the volatility of asset prices and the degree of trading frictions. From a normative standpoint, we find that the asset allocation is constrained-inefficient unless investors have all the bargaining power in bilateral negotiations with dealers. We also analyze the model with entry of dealers, thereby endogenizing the extent of the trading frictions. We show that the dealers' entry decision introduces a feedback that can give rise to multiple equilibria, and construct examples. With entry, we find that both the portfolio allocation across investors and the number of dealers are socially inefficient

Keywords: Search; asset markets (search for similar items in EconPapers)
JEL-codes: G11 G12 (search for similar items in EconPapers)
Date: 2006
New Economics Papers: this item is included in nep-dge and nep-mst
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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