Hi, I've recently discovered that because the base currency of my IB account is GBP, the cash from any USD trades I make isn't automatically converted back to GBP once I close the position, so I effectively hold a GBP/USD FX position after every trade. To get around this, every night I've been choosing 'Close all Non-Base currency positions' from the account dialog in TWS, which converts the USD from the trades back into GBP. However every day when I start up TWS again I have another (sometimes large) GBP/USD position in my account, and it's usually lost some money. No trades have occurred overnight so i'm very confused why this keeps happening, and I'm hoping someone else who use the multi currency accounts at IB can give some advice? Thanks.