# nikkei 225 yen contract on the CME

This may be a silly question on futures trading, but I haven't found a clear answer on the CME website.

For the Nikkei 225 Yen contract on the CME, which is denominated in Yen, the margin is also given in terms of Yen, e.g. currently it is 450,000 JPY .

I trade this contract via a broker, for example Interactive Brokers (IB) or etrade or any broker offering futures, and also suppose I have a USD base account.

How do a brokers in the US (such as IB or etrade, etc.) take the margin paid my account? Do they convert some of the USD into JPY and then retain it as margin?

Subsequently, if I had a profit, will they give me back JPY or will they convert it into USD?