I am aspiring to provide a service for fund managers who oversee large sums of money. I have developed a system which trades 3 pairs (2 others in testing) and most years a pairs loss is made up for by another. By combining annual profits since 1976 i have put together a spreadsheet to show results. I have 5 pairs total, the other two have not been run yet. Will see what combinations are best. But the 3 i have now should be best since the two remaining are chf and gbp which closely follow the eur. Please provide analysis of what i should do or what i have done wrong .