This paper was previously presented as “Big risk?” The authors thank three anonymous referees, Tim Bollerslev, Oleg Bondarenko (discussant), Francesca Carrieri, Mathieu Fournier, Alexandre Jeanneret, Dmitry Muravyev, Valeri Sokolovski, Viktor Todorov, Nikola Vasiljević (discussant), and the participants of the 2015 Swiss Finance Institute Research Days, the 11th Annual Society for Financial Econometrics Conference in Lugano, and the Quantitative Finance Seminars at Kellogg School of Management for valuable comments and suggestions.