Price Dispersion in OTC Markets: A New Measure of Liquidity
36 Pages Posted: 4 Mar 2008 Last revised: 10 Apr 2008
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Price Dispersion in OTC Markets: A New Measure of Liquidity
Price Dispersion in OTC Markets: A New Measure of Liquidity
Date Written: April 2008
Abstract
In this paper, we model price dispersion effects in over-the-counter (OTC) markets to show that in the presence of inventory risk for dealers and search costs for investors, traded prices may deviate from the expected market valuation of an asset. We interpret this deviation as a liquidity effect and develop a new liquidity measure quantifying the price dispersion in the context of the US corporate bond market. This market offers a unique opportunity to study liquidity effects since, from October 2004 onwards, all OTC transactions in this market have to be reported to a common database known as the Trade Reporting and Compliance Engine (TRACE). Furthermore, market-wide average price quotes are available from Markit Group Limited, a financial information provider. Thus, it is possible, for the first time, to directly observe deviations between transaction prices and the expected market valuation of securities. We quantify and analyze our new liquidity measure for this market and find significant price dispersion effects that cannot be simply captured by bid-ask spreads. We show that our new measure is indeed related to liquidity by regressing it on commonly-used liquidity proxies and find a strong relation between our proposed liquidity measure and bond characteristics, as well as trading activity variables. Furthermore, we evaluate the reliability of end-of-day marks that traders use to value their positions. Our evidence suggests that the price deviations are significantly larger and more volatile than previously assumed. Overall, the results presented here improve our understanding of the drivers of liquidity and are important for many applications in OTC markets, in general.
Keywords: liquidity, corporate bonds, market microstructure, OTC markets
JEL Classification: G12
Suggested Citation: Suggested Citation
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