: an informal form of a name. â Diminutives can be a shortened form of a name (such as âJenâ for âJenniferâ and âDickâ for âRichardâ) or a name with a diminutive suffix added to it (such as âBobbyâ for âBobâ).
The sensitivity of an option's market value relative to a change in the time to expiration. Theta is a measure of time decay and tends to grow larger as an option approaches expiration.
âdownsideâ risk-adjusted return measures, but appear distinct mathematically. We show that. each of these measures is a special case of Kappa, a generalized risk-adjusted performance. measure. A single parameter of Kappa determines whether the Sortino Ratio, Omega, or another. risk-adjusted return measure is generated. Using shape estimation functions for investment return distributions, we show that values for the. first four moments of a return distribution are sufficient in many cases to enable a robust.