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Federal Reserve Bank of New York
Staff Reports
Liquidity and volatility in the U.S. treasury market
Giang Nguyen
Robert Engle
Michael J. Fleming
Eric Ghysels

We model the joint dynamics of intraday liquidity, volume, and volatility in the U.S. Treasury market, especially through the 2007-09 financial crisis and around important economic announcements. Using various specifications based on Bauwens and Giot’s (2000) Log- ACD(1,1) model, we find that liquidity, volume, and volatility are highly persistent, with volatility having a lower short-term persistence than the other two. Market liquidity and volume are important to explaining volatility dynamics but not vice versa. In addition, market dynamics change during the financial crisis, with all variables exhibiting increased responsiveness to their most recent realizations. Our models also reveal different market dynamics around announcements. Finally, we introduce new measures of liquidity risk that are useful for continually monitoring liquidity conditions and the risk of liquidity stress in the market.

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Giang Nguyen & Robert Engle & Michael J. Fleming & Eric Ghysels, Liquidity and volatility in the U.S. treasury market, Federal Reserve Bank of New York, Staff Reports 590, 01 Dec 2012, revised 01 Nov 2018.
More from this series
Note: Previous title: "Liquidity, Volatility and Flights to Safety in the U.S. Treasury Market: Evidence From A New Class of Dynamic Order Book Models"
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Keywords: liquidity; Treasury market; limit order book; financial crisis; volatility; announcement
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