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IonQ stock surged on Tuesday, closing up 20.2% as broader markets also rose. The S&P 500 climbed 1.1% and the Nasdaq Composite gained 1.9% during the session. While the rally reflected bullish momentum for the overall market, IonQ’s move was also supported by business-specific developments. Even after Tuesday’s jump, the stock remains down about 56.5% from the high it reached last year.
IonQ said in a press release that it has won a new contract with the U.S. Defense Advanced Research Projects Agency (DARPA). Under the partnership, IonQ will work on DARPA’s Heterogeneous Architectures for Quantum (HARQ) project to develop advanced quantum-computing systems.
The announcement also highlighted progress from IonQ’s existing work with the U.S. Air Force Research Laboratory. IonQ reported successful results for the interconnecting of two independent trapped-ion quantum-computing systems. The company said the development points to a major step forward in networking quantum systems, and it came alongside news of the expanded DARPA partnership.
IonQ’s rally also coincided with broader gains driven by hopes that negotiations could resume to end the Iran war. President Donald Trump said yesterday that Iranian officials had reached out to restart talks to end the conflict. The article notes that the Iran war has had a destabilizing impact on valuations for growth-dependent technology stocks, and that renewed negotiation hopes helped support large valuation gains across the sector.

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