Template:Nutshell Equity Derivatives 6.3(a)

6.3(a) “Market Disruption Event” means

(i) a material Trading Disruption or Exchange Disruption to a Share or Index during the hour before the Valuation Time (etc), or

(ii) an Early Closure.

To work out whether there is a Market Disruption Event on an Index due to a Market Disruption Event on one of its component securities, then the Calculation Agent will determine the percentage that security contributes to the Index by comparing (x) how much of the Index level is attributable to that security with (y) the Index level just before the Market Disruption Event happened.