I would like to write a piece about changes in wealth and how hiers and large companies become sloppy with their resources and thus eclipsed by their competition. For example, only 25 individual have remained on the Forbes 400 richest Americans over the past 25 years, last year alone 33 new individuals appeared.
I would like the same type of statistics on the S&P 500, the Dow Jones and the Russell if anyone knows where i can locate such information.