A place on the S&P 500 means a sure-fire stock boost—and a pleasant surprise for the CEO

A place on the S&P 500 means a sure-fire stock boost—and a pleasant surprise for the CEO

When a company’s share price suddenly jumps, it’s usually in response to announcements—like a merger or a great earnings release—that top executives have prepared for weeks. Sometimes, though, the good news comes out of the blue and is as much of a surprise to the CEO as it is to the rest of market. That’s what happened last month, when S&P Dow Jones announced that the financial platform Robinhood would be joining its all-important index of 500 …