To calculate your profit or loss for a Long trade, please use the following formula:

PL = S * M * ( Ec / E0 – 1 ) – C , where:

PL is your profit or loss

S is your investment amount

M is the multiplier value in use

Ec is the close price

Eo is the open price

C is commission charged for your transaction

To calculate your profit or loss for a Short trade, please use the following formula:

PL = S * M * ( 1- Ec / E0) – C

Let's assume you have opened a long Dow Jones trade worth 1,000 USD with multiplier at 10, at 15,345 and closed it at 15,515, your transaction fee being 1.70 USD, and the rollover fee at - 3.80 USD.

Thus, what we get is: 1,000 * 10 * ( 15,515 / 15,345 – 1) – 1.70 – 3.80 = 105.28 USD.

Your transaction profit is 105.28 USD.

Now let's assume we open an identical trade, but a short one:

1,000 * 10 * (1 – 15,515 / 15,345) – 1.70 – 0.20 = -112.68 USD

Here, your loss would be 112.68 USD.