3872金融与交易中等derivationmedium

Margin Call Amount 2

题目

A short futures account starts with initial margin 7000, multiplier 80, and settlements [90, 86, 88, 83]. Maintenance never binds on this path. Treasury sweeps out any end-of-day balance above the initial margin, leaving exactly the initial margin in the account after each close. Ignoring interest, how much cash is withdrawn in total?

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