This is probably ok if you consistently sell stuff that exits the top7 and buy stuff that enters, but I kinda doubt it's all that much better. Same as the s&p50

This is probably ok if you consistently sell stuff that exits the top7 and buy stuff that enters, but I kinda doubt it's all that much better. Same as the s&p500 and the Russell 5000 have really similar returns. You'll be more exposed to screwing things up when companies enter/leave.