Template-Type: ReDIF-Paper 1.0 Author-Name: Asai, M. Author-Name-Last: Asai Author-Name-First: Manabu Author-Person: pas73 Author-Name: McAleer, M.J. Author-Name-Last: McAleer Author-Name-First: Michael Author-Person: pmc90 Title: The Impact of Jumps and Leverage in Forecasting Co-Volatility Abstract: __Abstract__ The paper investigates the impact of jumps in forecasting co-volatility, accommodating leverage effects. We modify the jump-robust two time scale covariance estimator of Boudt and Zhang (2013) such that the estimated matrix is positive definite. Using this approach we can disentangle the estimates of the integrated co-volatility matrix and jump variations from the quadratic covariation matrix. Empirical results for three stocks traded on the New York Stock Exchange indicate that the co-jumps of two assets have a significant impact on future co-volatility, but that the impact is negligible for forecasting weekly and monthly horizons. Length: 22 Creation-Date: 2015-02-01 File-URL: https://repub.eur.nl/pub/78068/EI2015-06.pdf File-Format: application/pdf Series: RePEc:ems:eureir Number: EI 2015-06 Classification-JEL: C32, C53, C58, G17 Keywords: Co-Volatility, Forecasting, Jump, Leverage Effects, Realized Covariance, Threshold, Estimation. Handle: RePEc:ems:eureir:78068