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Working Paper
Sluggish news reactions: A combinatorial approach for synchronizing stock jumps
Stock prices often react sluggishly to news, producing gradual and delayed jumps. Econometricians typically treat these sluggish reactions as microstructure effects and settle for a coarse sampling grid to guard against them. We introduce new methods to synchronize mistimed stock returns on a fine sampling grid that allow us to better approximate the true common jumps in the efficient prices of related stocks in an application to Dow 30 data. The synchronized jumps produce better jump covariance estimates and estimates of the realized jump betas with better forecasting power, and superior ...
Working Paper
Jumps, cojumps and macro announcements
We analyze and assess the impact of macroeconomic announcements on the discontinuities in many assets: stock index futures, bond futures, exchange rates, and gold. We use bi-power variation and the recently proposed non-parametric techniques of Lee and Mykland (2006) to extract jumps. Beyond characterizing the jump and cojump dynamics of many assets, we analyze how news arrival causes jumps and cojumps and estimate limited-dependent-variable models to quantify the impact of surprises. We confirm previous findings that some surprises create jumps. However, many announcements do not create ...
Working Paper
Central bank intervention and exchange rate volatility, its continuous and jump components
We analyze the relationship between interventions and volatility at daily and intra-daily frequencies for the two major exchange rate markets. Using recent econometric methods to estimate realized volatility, we employ bipower variation to decompose this volatility into a continuously varying and jump component. Analysis of the timing and direction of jumps and interventions imply that coordinated interventions tend to cause few, but large jumps. Most coordinated operations explain, statistically, an increase in the persistent (continuous) part of exchange rate volatility. This correlation is ...