Chabi-Yo, Fousseni - 2010
Risk aversion functions extracted from observed stock and option prices can be negative, as shown by Aiuml;t-Sahalia and Lo (2000), Journal of Econometrics 94: 9-51; and Jackwerth (2000), The Review of Financial Studies 13(2), 433-51. We rationalize this puzzle by a lack of conditioning on latent...