U.S. Republican Congressman on Intelligence and Defense Committees Bets on 'Quantum Computing' Stocks This Year

Representative Greg Steube (R–FL) disclosed on April 14 that he purchased between $1,001 and $15,000 worth of shares in IonQ, a U.S.–based quantum computing firm, on March 18. As a sitting member of the House Permanent Select Committee on Intelligence, which handles national security information, and the House Ways and Means Committee, which oversees tax and trade policy, Steube’s personal investment in a company deeply tied to U.S. defense and intelligence contracts has raised questions of potential conflict of interest.

IonQ Inc. is a Nasdaq-listed company that develops and operates ion-trap–based quantum computers. It offers quantum computing services through major cloud platforms and is expanding into a “full-stack” quantum offering that includes networking, sensing, and security solutions. The company has secured multiple large contracts with U.S. defense and intelligence agencies—including the Air Force Research Laboratory—and has pursued aggressive M&A to broaden its government and defense customer base. Notable acquisitions include quantum-sensing firm Vector Atomic and satellite-imaging provider Capella Space. IonQ has also announced plans to acquire UK startup Oxford Ionics in 2025 and U.S. foundry SkyWater Technology in 2026, bolstering its vertical integration in quantum and semiconductor technologies.

As of April 16, IonQ’s share price stood at about $44, reflecting a gain of more than 30% since mid-March, shortly after Steube’s purchase. Investors have responded favorably to IonQ’s report of over $130 million in 2025 revenue—a year-over-year increase exceeding 200% and the company’s first annual revenue above $100 million—and to its 2026 revenue guidance of $225–245 million. The planned SkyWater acquisition, which would reinforce U.S.-based quantum and semiconductor capabilities, also fueled optimism. At the same time, IonQ remains a volatile “theme stock” tied to U.S. government quantum and semiconductor investments and broader national security dynamics.

Steube, who represents Florida’s 17th Congressional District, is known as a conservative, pro-Trump lawmaker who has sponsored security-focused bills such as the DEFENSE Act, aimed at countering hostile drone threats. His committee assignments give him influence over budgetary and tax incentives for emerging technologies considered part of national defense infrastructure, including quantum computing and semiconductors—areas in which he now holds personal investments. With IonQ expanding long-term defense and security contracts with the U.S. government and its allies, Steube’s access to classified briefings and nonpublic information in his intelligence-committee role heightens the risk of ethical scrutiny. Meanwhile, bipartisan proposals to ban individual stock trading by members of Congress and their families are gaining traction, and Steube’s recent transaction may intensify political pressure for tighter insider-trading rules on Capitol Hill.