# Value at expiry of a lookback put option with fixed strike

## Description

Formula for the calculation of the value at expiry of a lookback put option with a fixed strike

## Formula

\[ LP_{fix}=max\left (K-S_{min},0 \right ) \ \]

## Legend

\(K\ \) | Option strike price |

\(S_{min}\ \) | Mimimum price of the underlying during the option's lifetime |

## Additional information related to this formula

### Related definitions:

• •