Bakshi, Gurdip; Madan, Dilip; Panayotov, George - In: Journal of Financial Economics 97 (2010) 1, pp. 130-154
When the pricing kernel is U-shaped, then expected returns of claims with payout on the upside are negative for strikes beyond a threshold, determined by the slope of the U-shaped kernel in its increasing region, and have negative partial derivative with respect to strike in the increasing...