5737. Short butterfly spread

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    1. Where a Dealer Member inventory or client account contains a short butterfly spread combination on the same underlying interest with all exchange-traded options expiring at the same time, such that long positions in two call options (or put options) are held and the long call options (or long put options) are at a middle exercise price and are flanked on either side by a short call option (or short put option) having a lower and higher exercise price respectively, and the interval between the exercise prices is equal, the minimum margin required is the amount, if any, by which the exercise value of the long call options (or long put options) exceeds the exercise value of the short call options (or short put options).

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    There is no history log for this rule.