Template:M summ Equity Derivatives 12.1
All hail the Determining Party
Note that where an Extraordinary Event occurs, the Determining Party, rather than the Calculation Agent, may be the person called on to calculate a Cancellation Amount. (This is relevant especially where the Calculation Agent is not the Hedging Party, as the Hedging Party will have definite ideas about how to value cancellation vis a vis its own hedge).