Quantum Computing Stocks Are Falling. Should You Buy IonQ or D-Wave, or Just Stick With Nvidia?

Quantum computing stocks IonQ and D-Wave have experienced significant declines recently, with IonQ down 37% and D-Wave down 28% over the past month. While both companies rely heavily on federal government contracts and funding, IonQ shows stronger revenue growth ($64.7M in Q1 2026, up 755% YoY) and cash reserves ($3.1B), whereas D-Wave faces challenges with declining revenue ($2.9M in Q1 2026, down 81% YoY). Nvidia, which provides foundational GPU infrastructure for quantum computing through its NVQLink platform, is positioned as the lower-risk play that benefits regardless of which quantum company succeeds.