Discover what a concentration ratio reveals about industry dominance, competition levels, and firm sizes. Learn to calculate ...

Look at U.S. earnings. The top tech stocks accounted for 53% of the S&P 500's returns last year, according to analysts at ...

History shows the tech-heavy stock market still has room to run higher, Goldman Sachs said. In five out of seven peaks in market concentration going back 100 years, stocks have kept rising. Just 10 ...

Taiwan's Taiex and South Korea's Kospi stock markets have been seeing record breaking rallies. The stunning surge leaves ...

Microsoft is one of five companies accounting for 27% of the S&P 500 market capitalization. (Photo by Chesnot/Getty Images) Markets were hardly changed for the second day in a row on Tuesday with both ...

Understanding market concentration helps advisors guide clients in balancing risk and diversification, ensuring portfolios are aligned with long-term goals while minimizing unnecessary exposure to ...

US stock market concentration has steadily increased over the past five years, with the first-quarter rotation in 2026 doing little to disrupt that trend. The technology sector accounted for more than ...

U.S. equity market concentration has increased sharply over the past decade as mega-cap companies have grown faster than the broader large cap universe. Measures such as the effective number of stocks ...

Since the low point of 2008, the value of global bonds and equities has grown to $255bn, more than 2.5x their starting value. In share markets, those 16 years have also seen an expansion of the ...