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StocksMediumUpdated×5•Originally published 16 April 2026•Updated 17 April 2026•

1 min read

IONQ Stock Surges 51% Following DARPA Selection for HARQ Program

Key Facts

1Xanadu Quantum (XNDU) stock rose nearly 30% following Nvidia's announcement of its new 'Ising' AI models.

about 2 months ago

Version History

Version 5about 2 months ago

What changed: The narrative was updated to reflect the shift from a single-stock surge to a broader sectoral trend, highlighting the growing number of public participants like Infleqtion and increased institutional spotlight.

Version 4about 2 months ago

What changed: Updated the story to include IonQ's launch of new AI models and the expectation that the 'Ising' model will become an industry standard.

Version 3about 2 months ago

What changed: Updated headline and body to reflect IONQ's 51% surge following the DARPA contract win, adding details on the performance and decay risks of the leveraged IONX ETF.

Version 2about 2 months ago

What changed: The story was updated to include Citron Research's commentary, shifting focus toward Nvidia CEO Jensen Huang's endorsements as a key catalyst for the sector.

Version 1about 2 months ago

What changed: Updated to reflect the rally extending into a third day and expanding to other sector peers including IonQ, D-Wave, and Rigetti.

The quantum computing sector witnessed a significant shift after DARPA selected IONQ for its HARQ program, triggering a 51% surge in the company's stock price. This momentum coincides with a steady increase in the number of public companies within the space, as names like Infleqtion emerge alongside IonQ. Quantum computing firms are now capturing a broader investment spotlight that extends beyond individual stock movements, signaling a maturing industry trend. These developments fueled a 114% five-day return for the 2x leveraged IONX ETF, supported by tailwinds from Nvidia and Citron Research. However, analysts warn that annualized volatility exceeding 90% poses substantial decay risks for leveraged investors. Market participants are now evaluating whether these technical breakthroughs and government contracts can sustain long-term growth as the sector's public footprint expands.