Lookback End

Key Lookback End in Lookback Option refers to the date when the lookback period ends.
Only spot underlying prices occurring before the date here are considered in the selection of the optimal price to be used in the payoff calculation of the lookback option.
It is allowed to lie before the option's expiry, in which case the resulting option is known as a partial floating strike lookback option
If set to [No Date] or any date beyond the underlying option's expiry, the lookback period extends up to expiry.