On some semi-parametric estimates for European option prices

Abstract

We show that an estimate by de la Peña, Ibragimov and Jordan for $\mathbb{E}(X-c{)}^{+}$, with $c$ a constant and $X$ a random variable of which the mean, the variance, and $\mathbb{P}(X\le c)$ are known, implies an estimate by Scarf on the infimum of $\mathbb{E}(X\wedge c)$ over the set of positive random variables $X$ with fixed mean and variance. This also shows, as a consequence, that the former estimate implies an estimate by Lo on European option prices.

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• On some semi-parametric estimates for European option prices