: 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.
In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is dependent.f the value of a derivative is dependent on two or more underlyings, its Greeks are extended to include the cross-effects between the underlyings. Correlation delta measures the sensitivity of the derivative's value to a change in the correlation between the underlyings.