S&P 500 stocks: 5 companies now make up 18% of the index. Is that a recipe for a crash? | Fortune
Here's how Amazon's $1 trillion market cap stacks up against the rest of the S&P 500
S&P 500 Concentration Risk Could Define 2021 (SP500) | Seeking Alpha
Where Will Amazon Be in 5 Years? | The Motley Fool
S&P 500 Concentration Risk Could Define 2021 (SP500) | Seeking Alpha
Bull trend strengthens: S&P 500, Nasdaq clear 20-day volatility bands - MarketWatch
5 companies now make up 20% of the S&P 500. Here's why Goldman Sachs says that's a bad signal for future market returns. (MSFT, AAPL, AMZN, GOOGL, FB) | Markets Insider
S&P 500 stocks: 5 companies now make up 18% of the index. Is that a recipe for a crash? | Fortune
Why Amazon Won't Split Its Stock | The Motley Fool
Wall Street braces for trading surge as Tesla enters S&P 500
5 Companies Make up 18% of the S&P 500. Should Investors Care?
Stocks and sectors that move the S&P 500 and NASDAQ | Shares Magazine
One chart puts mega tech's trillions of market value into eye-popping perspective - MarketWatch
The Stock Market Is Near Correction Levels
Top Five Companies % of S&P 500 Market Capitalization – ISABELNET
Stocks and sectors that move the S&P 500 and NASDAQ | Shares Magazine
Rise of the US mega-caps creates shaky 'top-heavy' market | Financial Times
Rise of the US mega-caps creates shaky 'top-heavy' market | Financial Times
S&P 500 dominated by Apple, Microsoft, Alphabet, Amazon, Facebook
The Biggest Stocks
A Look Under the S&P 500 Hood
