Quantum Computing Inc.vs.Rigetti Computing
QUBT vs RGTI · 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.
Rigetti Computing is about 2.8× larger than Quantum Computing Inc. by market cap; year to date, Quantum Computing Inc. leads (−27.4% vs −36.2%).
Side by side
| QUBT | RGTI | |
|---|---|---|
| Market cap | $1.7B | $4.7B |
| Price | $7.44 | $14.03 |
| Today | −0.1% | −0.8% |
| Return YTD | −27.4% | −36.2% |
| Return 1Y | −64.2% | −67.3% |
| Since July 10, 2026 | −14.1% | −15.2% |
| P/E | — | — |
| P/S | 171.2 | 350.7 |
| P/B | 1.1 | 8.7 |
Data as of 2026-10-09 · updates daily after U.S. close
Since July 10, 2026: the change in the closing price from the first session with a close for both companies. Sectivia records these closes itself, starting June 26, 2026.
The two companies
Quantum Computing Inc.QUBT
Photonics instead of superconductors: integrated photonic chips, reservoir computing and quantum sensing, made in its own thin-film lithium-niobate foundry. Speculative.
Full QUBT profile →Rigetti ComputingRGTI
Superconducting qubits, on chips Rigetti designs and fabricates itself.
Full RGTI profile →More QUBT & RGTI comparisons
Other head-to-heads in the Quantum hardware & platforms segment.