Mega-cap Tech Stocks Market Share of the S&P 500 is Now 22%, but can it Hold?

Mega-cap tech (  AAPL MSFT AMZN GOOGL META ) market share of the S&P 500 is now 22%, but this chart from Goldman Sachs suggests the top 4 stocks in 2000 showed us market leadership is difficult to maintain...

Past performance is no guarantee of future results...