Hyperdrive

Tesla Sends S&P 500 Crowd on a Wild Ride of Surges and Crashes

  • Stock on a rollercoaster ride even after joining the S&P Index
  • Shares’ 29% gain in the past 12 months surpasses broad market

A vehicle at a Tesla Supercharger station in Firebaugh, California, U.S.

Photographer: David Paul Morris/Bloomberg
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There was a sense among Wall Street types a year ago that Tesla Inc.’s entrance into the S&P 500 Index would calm the stock. Sure, it would still have sporadic moments of Elon Musk-driven swings -- up 5% Tuesday, down 5% Wednesday -- but overall, it would behave more like a proper, staid member of the blue-blooded community it was joining.

They were wrong.