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 3.1× larger than Quantum Computing Inc. by market cap; year to date, Quantum Computing Inc. leads (−19.7% vs −26.1%).
Side by side
| QUBT | RGTI | |
|---|---|---|
| Market cap | $2B | $6.2B |
| Price | $8.46 | $16.94 |
| Today | +2.7% | +3.5% |
| Return YTD | −19.7% | −26.1% |
| Return 1Y | −47.9% | +10.5% |
| P/E | — | — |
| P/S | 465.9 | 620.5 |
| P/B | 1.3 | 10.6 |
Data as of 2026-08-26 · updates daily after U.S. close
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.
See where QUBT and RGTI sit in the full Quantum computing map: every segment from suppliers to end markets.Open the Quantum value chain →