If you want to buy shares of multiple USD ETFs on IBKR, what is cheaper? The auto currency exchange or a manual one? For example:
Let's say you want to buy 500$ shares for 3 different ETFs, using ~1500 CHF. Is it cheaper to manually turn those CHF as a whole into USD and then buy the 3x500 USD in shares, or is it cheaper to buy the shares directly (and have IBKR auto-exchange to USD 3 times), without manually turning the CHF into USD first?
Let's say you want to buy 500$ shares for 3 different ETFs, using ~1500 CHF. Is it cheaper to manually turn those CHF as a whole into USD and then buy the 3x500 USD in shares, or is it cheaper to buy the shares directly (and have IBKR auto-exchange to USD 3 times), without manually turning the CHF into USD first?