The S&P 500 is on track for another record, but market breadth is terrible. Only 171 stocks in the index are rising with the index up 0.1%. Top performers include Super Micro Computer, Nike, Advanced ...

The successor to the first stock market index is getting up there with the S&P 500 and the Nasdaq Composite in all-time-high ...

Robinhood Markets had a market valuation of nearly $86.5 billion as of Wednesday’s stock market close. ... come and go in the S&P 500 due to mergers as well as stock market fluctuations.

They explained: “The present value of short- and long-term expected earnings for S&P 500 firms, computed using a constant required return, fully explains observed stock market fluctuations.” ...