• An investor takes a short position in a wheat futures contract. The investor enters the position at $7.80 per bushel. The contract size is 5,000 bushels. Assume that the initial margin is $2,310, the maintenance margin is $2,100. The settlement prices for the first 4 trading days are as followings:

• Day 1: $7.785

• Day 2: $7.83

• Day 3: $7.8575

• Day 4: $7.8925

• Compute the amount in the margin account at the end of each day for the short position and any variation margin need.