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Why Quantum Computing Stock Is Plummeting Today

Quantum Computing just gave investors some great news. So why is the stock sinking?

By Keith Noonan Updated Mar 3, 2026 at 12:05PM EST

Key Points

  • Quantum Computing's Q4 report arrived with a smaller-than-expected loss and a miss on sales.
  • The company issued some very encouraging guidance for this year.
  • The stock is still seeing a big sell-off today due to concerns about the U.S. and Israel's war with Iran.

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