Theoretically, the deposit is only to ensure that you can get the deposit of this contract and not participate in the actual winning or losing. From the perspective of leverage, rather than positions (the number of contracts with the same capital), if the leverage of this contract is 1: 1, you need to invest1w $; If the leverage is 1: 100, it can be seen that you can get the contract by putting 100% money on it, that is, 100 dollars. However, whether it is 10000 yuan or 100 yuan, it will bear all the losses or profits brought by this contract, so the profit loss of a point fluctuation is the same.

PS: There are many currency pairs that fluctuate at a point other than the US dollar.