| Increase in | Value of call option will | Value of put option will |
| value of the underlying | Increase | Decrease |
| exercise price | Decrease | Increase |
| risk-free rate | Increase | Decrease |
| time to expiration | Increase | Increase (exception: a few European puts) |
| volatility of the underlying | Increase | Increase |
| costs incurred while holding the underlying | Increase | Decrease |
| benefits received while holding the underlying | Decrease | Increase |