IonQvs.Quantum Computing Inc.
IONQ vs QUBT · both in Quantum hardware & platforms, part of the Quantum computing value chain: The companies building the quantum computers themselves — trapped ions, superconducting qubits, photonics and annealing.
IonQ is about 8.2× larger than Quantum Computing Inc. by market cap; year to date, IonQ leads (−4.5% vs −15.6%).
Side by side
| IONQ | QUBT | |
|---|---|---|
| Market cap | $16B | $2B |
| Price | $42.86 | $8.66 |
| Today | −4.3% | −5.4% |
| Return YTD | −4.5% | −15.6% |
| Return 1Y | −6.7% | −54.8% |
| P/E | 48.9 | — |
| P/S | 85.5 | 450.7 |
| P/B | 3.2 | 1.2 |
Data as of 2026-07-11 · updates daily after U.S. close
The two companies
IonQIONQ
The leading trapped-ion quantum computing pure play — high qubit fidelity, access through the major cloud platforms and an aggressive, acquisition-driven roadmap toward quantum networking.
Full IONQ profile →Quantum Computing Inc.QUBT
Photonics-based quantum technology — integrated photonic chips, reservoir computing and quantum sensing, with an in-house thin-film lithium-niobate foundry.
Full QUBT profile →More comparisons in Quantum hardware & platforms
See where IONQ and QUBT sit in the full Quantum computing map — every segment from suppliers to end markets.Open the Quantum value chain →