Moderna Joins Top S&P 500 Firms as Stock Value Triples

  • Stock has closed at record highs in four of past five sessions
  • Comparisons to Tesla prove to be a double-edged sword

Photographer: Hendrik Schmidt/picture alliance/Getty Images

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Moderna Inc. joined the S&P 500 on Wednesday as the index’s the best performing stock this year -- by a mile.

The move caps the drugmaker’s transformation from an early-stage biotech to a vaccine maker supplying Covid shots to the world. With a gain of just over 207% so far in 2021, Moderna’s share performance tops the index’s existing leader, L Brands Inc., which has risen about 104%.