Jessica Karl, Columnist

Not All the S&P 500’s New Members Are Treated Equally

A new class of retail investors is changing the stock market, and Wall Street is along for the ride.

What’s poppin’?

Photographer: Bloomberg

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The S&P 500, Jonathan Levin notes in his column today, is kinda like “the Skull and Bones of corporate memberships.” But does the exclusive club still give newly joined companies a boost?