2. A trader takes a long position and a hedge fund takes a short position on ten S&P 500 futures contracts at 3300. A single S&P 500 futures contract invoice price equals ($50) x (Index Price). The initial margin is $12,500 and the maintenance margin is $9,500 per contract. Ten trading days later, the futures price of the index drops to 3150. a) What is the change in margin account balance 1) for the trader, and 2) for the hedge fund (indicate gain or loss)? b) Is there a margin call for one of the two parties? c) What is the maximum change in the S&P futures price which will lead to no margin call for either party