merton

Below I am trying to show the relationship between Merton PD and the BSM. Merton PD = N[ -[ln(V/K)+(μ-0.5σ²)T]/σT ] The formula inside the bracket (let’s name it D2 since it) is very similar to the formula for d2 in the BSM for pricing call option: d2 = ln(S/X)+(r-0.5σ²)T]/σT So we have...