You need to multiply the current value of the index (futures) by the number of lots, and then multiply it by the size of the contract. For example, for 2 lots of USA500, the position volume will be: 2096.1 x 2 x 50 = 209 610 USD.
You need to multiply the current value of the index (futures) by the number of lots, and then multiply it by the size of the contract. For example, for 2 lots of USA500, the position volume will be: 2096.1 x 2 x 50 = 209 610 USD.