C = S·N(d₁) − K·e^(−rT)·N(d₂)。
C = S·N(d₁) − K·e^(−rT)·N(d₂)。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Call price C | S*e^(-qT)*N(d1) - K*e^(-rT)*N(d2) | Black & Scholes (1973); Hull 9th §13.8 |
| d1 | (ln(S/K)+(r-q+sigma^2/2)T)/(sigma*sqrt(T)) | Standard normal N(·) |
| d2 | d1 - sigma*sqrt(T) | — |
| Assumptions | European, no-arbitrage, const vol & rate | BS model premise |