A trader takes the long position and a hedge fund takes a short position on ten 1-month S&P 500 futures contracts at 2500. A single S&P 500 futures contract equals ($250) (Index Value). The initial margin is $325,000 and the maintenance margin is $245,000 for both accounts. Five trading days later, the futures price of the index drops to 2,460 triggering a margin call for the trader. What is the change margin account balance (indicate gain or loss) for: a) the trader and b) the hedge fund? How much is the margin call for the trader?