The double binary cash-or-nothing option has a fixed cash payout (M) that depends on whether the underlying assets (S1,S2) end above or below the strikes (K1,K2) at the expiration date.
There are four types of double binary cash options.
List of symbols
Value of the double binary cash-or-nothing up-up option
Value of the double binary cash-or-nothing up-down option
Value of the double binary cash-or-nothing down-up option
Value of the double binary cash-or-nothing down-down option