Quantum Computing Stocks Surge... Market Cap Increases by 4 Trillion Won in One Day

As of the previous trading day on the New York Stock Exchange, IonQ Inc. (IONQ) closed at $62.96, up 10.81%. This surge lifted its market capitalization to about $23.49 billion (roughly ₩33 trillion), adding approximately $2.8 billion (around ₩4 trillion) in a single day and underlining renewed momentum in quantum computing.

Recently, IonQ reported its first-quarter 2026 financial results and raised its full-year revenue guidance to $260 million–$270 million. It has also secured quantum system supply and research contracts with the U.S. Defense Advanced Research Projects Agency (DARPA) and the Air Force Research Laboratory, boosting expectations for government and defense demand. In addition, IonQ is advancing its planned $1.8 billion acquisition of U.S. foundry SkyWater, accelerating the build-out of a vertically integrated, full-stack quantum platform.

Headquartered in Maryland, IonQ is an ion-trap–based quantum computing company that offers pure-play quantum solutions—compute, security, and sensing—via its proprietary quantum processors on a cloud platform. While IonQ has built its growth story by simultaneously advancing quantum hardware and software, investors note that its stock remains highly volatile in response to technological and policy developments.