Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

How to save money on currency conversion
If you want to convert more than a few thousand dollars, one somewhat complex method is to have two investment accounts at a discount broker that operations both in Canada and the USA, then buy securities for USD on a US exchange, have your broker move them to the Canadian account, then sell them on a Canadian exchange for CAD.  This will, of course, incur trading fees, but they should be lower than most currency conversion fees if you convert more than a few thousand dollars, because trading fees typically have a very small percentage component. Using a currency ETF as the security to buy/sell can eliminate the market risk. In any case, it may take up to a week for the trades and transfer to settle.