IBM is a quantum computing pioneer. The company expects to reach true quantum advantage by 2026 and have a large fault-tolerant system in place by 2029. With a long track record and a clear roadmap, IBM is emerging as a quantum computing leader.

As the promise of quantum computing inches closer to commercial reality, investors continue to hunt for early-stage opportunities in the space—especially through speculative plays like quantum computing penny stocks. While the mainstream spotlight remains on giants like IBM and Alphabet, several lesser-known names have seen major moves in 2025.

Rigetti could become a “one-stop shop” for quantum computing services. IonQ’s trapped ion technology could make QPUs a lot faster and smaller. D-Wave Quantum, Rigetti Computing, and IonQ deserve a closer look.