: 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.
Yahoo Finance calculates beta from monthly prices over a time of three years. The S&P500 is used as the benchmark. You need 37 monthly prices (so you can get 36 returns) on the first trading day of each month. 1  The final price should be on the first trading day of the previous month.ahoo Finance calculates beta from monthly prices over a time of three years. The S&P500 is used as the benchmark. You need 37 monthly prices (so you can get 36 returns) on the first trading day of each month. 1  The final price should be on the first trading day of the previous month.