Veytics Intelligence
2026-09-23 · NASDAQ

Stock Market Today, Sept. 23: IonQ Surges on Quantum Breakthrough and Nvidia Partnership

IonQ (NYSE:IONQ) , a full-stack trapped-ion quantum computing provider, closed at $42.54, up 4.42%. It rose after a real-time error-correction breakthrough and a research-center collaboration with Nvidia (NASDAQ:NVDA) . Trading volume reached 69.9 million shares, coming in about 233% above its three-month average of 21.0 million shares. IonQ IPO'd in 2021 and has grown 294% since going public. How the markets moved today The S&P 500 (SNPINDEX:^GSPC) fell 0.75% to 7,706, and the Nasdaq Composite (NASDAQINDEX:^IXIC) fell 1.13% to 26,936. Among quantum computing hardware, software, and cloud-access services peers, Rigetti Computing (NASDAQ:RGTI) closed at $16.00, down 3.12%, and D-Wave Quantum (NASDAQ:QBTS) closed at $16.81, down 4.

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