The Dynamics of Price Discovery∗ Bingcheng Yan†and Eric Zivot‡ February 26, 2007 Abstract In this paper we propose a new approach for the econometric analysis of the dynamics of price discovery using a structural cointegration model for the price changes in arbitrage linked markets. Our methodology characterizes the dynam- ics of price discovery based on the impulse response functions from an identified structural cointegration model, and we measure the efficiency of a market’s price discovery by the absolute magnitude of cumulative pricing errors in the price dis- covery process. We apply our methodology to investigate the extent to which the US dollar contributes to the price discovery of the yen/euro exchange rate. Our results show that substantial price discovery of JPY/EUR occurs through the dollar, and that the efficiency of the dollar’s price discovery is positively related to the relative liquidity of the dollar markets versus the cross rate market. ∗We thank Frederick Harris, Jennifer Koski, ThomasMcInish,CharlesNelson,EdwardRice, Richard Startz, Thierry Foucault, and seminar participants at the American Statistical Association Meeting (2003), the European RTN Economics and Econometrics of Market Microstructure Summer School (2004), and the European Meeting of the Econometric Society (2004) for helpful comments. Research support from the Gary Waterman Distinguished Scholar Fund is gratefully acknowledged. All remaining errors are our own. †Barclays Global Investors, San Francisco, CA. Email:
[email protected]. ‡Box 353330, Department of Economics, University of Washington, Seattle, WA 98195, Tel: 206- 779-5246 and 206-543-6715, Fax: 206-685-7477, Email:
[email protected]. 1Introduction Price discovery is one of the central functions of financial markets.