Is the U.S. stock market too ‘concentrated’? Here’s what to know
Just a handful of large U.S. companies account for a third of the S&P 500 stock index. Some experts fear investors are at risk.
Just a handful of large U.S. companies account for a third of the S&P 500 stock index. Some experts fear investors are at risk.
These are the stocks posting the largest moves in premarket trading.
The filing showed Roaring Kitty, whose legal name is Keith Gill, bought just over 9 million shares — amounting to a 6.6% stake in the company.