| Faye Sagler takes a long position in 12 August yttrium futures contracts at a contract price of $3.50 per unit. Each contract is for 1,000 units of yttrium. The required initial margin is $400 per contract and the maintenance margin is $300 per contract. August yttrium futures decline to $3.42, $3.38, and $3.31 on the next three trading days. On the first day that Sagler will be required to deposit additional cash into her futures account, the required deposit is closest to: 
 
 
 
 
The initial margin is $400 × 12 = $4,800 and the maintenance margin level will be $300 × 12 = $3,600. Each $0.01 change in the price of yttrium changes the value of the account by $0.01 × 1,000 × 12 = $120. 
| Day | Price | Daily Change | Gain/Loss | Balance |  
| 0 | $3.50 |  |  | $4,800 (initial margin) |  
| 1 | $3.42 | -$0.08 | -$960 | $3,840 |  
| 2 | $3.38 | -$0.04 | -$480 | $3,360 |  
| 3 | $3.31 | -$0.07 | -$840 | $2,520 |  At the end of Day 2, the account balance has fallen below the maintenance margin level of $3,600, so Sagler must deposit enough cash to bring the balance back to the initial margin level of $4,800. The deposit is $4,800 - $3,360 = $1,440. |