The S&P500 is one of the most widely held indices in the US. And yet, the Market Cap weighted version has a tendency to become dominated by a handful of big caps. This is especially likely towards the end of a major run, when a handful of megacaps dominate the trading action.
One possible solution? Replace, at least in part, the cap weighted index with an equal weight S&P: SPDR S&P 500 (SPY) with an equal weight ETF such as Rydex S&P 500 Equal Weight (RSP). See the Table below from The Chart Store:
Please use the comments to demonstrate your own ignorance, unfamiliarity with empirical data and lack of respect for scientific knowledge. Be sure to create straw men and argue against things I have neither said nor implied. If you could repeat previously discredited memes or steer the conversation into irrelevant, off topic discussions, it would be appreciated. Lastly, kindly forgo all civility in your discourse . . . you are, after all, anonymous.