Category: Finance Brown Bag Seminar
When: 18 November 2015
, 02:00
 - 03:00
Where: DZ Bank (HoF E.20)
Speaker: Massimiliano Caporin, University of Padova

Author: Massimiliano Caporiny,University of Padova; Aleksey Kolokolovz, University of Lund; Roberto Renox, University of Siena,

Title: Multi-jumps

Abstract: The simultaneous occurrence of jumps in several stocks (multi-jumps) can be associated to major nancial news, is correlated with sudden spikes of the variance risk premium, and determines an increase in the stock variances and correlations which signi cantly deteriorates the diversi cation potential of asset allocation. The latter evidence implies a reduction in the demand of stocks by an aware risk-averse investor. These facts can be easily overlooked by the usage of standard univariate jump statistics, which just lack sucient power. They are instead revealed in a clearly cut way by using a novel test based on smoothed estimators of the integrated variance of individual stocks.