Modern Market Cap Theory - The Irrelevant Investor
Rise of the US mega-caps creates shaky 'top-heavy' market | Financial Times
S&P 500 Concentration Risk Could Define 2021 (SP500) | Seeking Alpha
S&P 500 stocks: 5 companies now make up 18% of the index. Is that a recipe for a crash? | Fortune
Stocks and sectors that move the S&P 500 and NASDAQ | Shares Magazine
Wall Street braces for trading surge as Tesla enters S&P 500
Rising stock market would be in the red without a handful of familiar names - The Washington Post
A Look Under the S&P 500 Hood
S&P 500 stocks: 5 companies now make up 18% of the index. Is that a recipe for a crash? | Fortune
Apple, Microsoft, Amazon, Google And Facebook Make Up A Record Chunk Of The S&P 500. Here's Why That Might Be Dangerous
Facebook, Amazon, Netflix, Google account for 90% of Market Cap Gains Since December 2014: Tonight, Amazon Missed - Mike Shedlock
Opinion: A strategy to outsmart the S&P 500 'bubble' - MarketWatch
Where Will Amazon Be in 5 Years? | The Motley Fool
Dr. Ed's Blog: The Magnificent Six Stocks That Are Gobbling Up Market Share
S&P 500 dominated by Apple, Microsoft, Alphabet, Amazon, Facebook
Bull trend strengthens: S&P 500, Nasdaq clear 20-day volatility bands - MarketWatch
The Biggest Stocks
5 Companies Make up 18% of the S&P 500. Should Investors Care?
S&P 500 Concentration Risk Could Define 2021 (SP500) | Seeking Alpha
One chart puts mega tech's trillions of market value into eye-popping perspective - MarketWatch
