Forward Surprise

Subtype of Job Request

This is the part of the PnL described in
PnL due exclusively to the impact of the realized forward value at the given horizon date T being different than what had been expected at the given spot date (denoted as 0).

It is also part of the PnL Explain table
PnLExplain Table that is produced in association with the key PnL Explain when a tradable is priced with the Advanced Pricing model input.

It is calculated as the difference:
(Horizon Price) - (Forward Price)
where the two terms are described at
Horizon Price and Forward Price

Plugging H for the first term and F for the second, we get:
H - F

The remaining part of PnL is given by
Carry Surprise