A standard option contract
At maturity, the call option holder will "exercise", i.e. choose stock, with value S
, if the stock price is above the strike K
, paying K
to the option issuer, realizing value S-K
. The put option holder will exercise, receiving K
while surrendering stock worth S
, if the stock price is below K
.
class
Therefore the value at maturity is equal to max(0,callput*(S-K))
optionality_fcn(v, ...)
: Return a version of v at time t corrected for any optionality conditions.recovery_fcn(v, S, t, ...)
: Return recovery value, given non-default values v at time t. Subclasses may be more elaborate, this method simply returns 0.0.Useful links