Black Scholes theta as function of time to maturity
quant.stackexchange.com › questions › 49758Nov 17, 2019 · I would like to understand why the Black and Scholes greek letter theta for european call option behave in the following way: as time to maturity is far away (right part of the x-axis in the the graph) theta is small for all the call options (ATM, ITM e OTM). Therefore this means that the call value decrease by a small amount as time passes when time to maturity is far away.