[scotnt73]

if on jan first you have 1000$ and then at the end of january you have 1200$ you are on a 200$ upswing. if you loose 200$ the next week you are on a 200$ downswing you are not even even though you have the same amount you started with. if you win 100$ the next week(you now have 1100$) you are on an overall 100$ downswing with a recent 100$ upswing.