QUBT vs QSI: Which Quantum Stock Is Better?
Quantum Computing Inc (Photonic) vs Quantum-Si (Quantum Biology) — live market, SEC financial and quantum-hardware data side by side.
QUBT is the larger company at $2.13B market cap, about 11× the size of QSI ($201.23M).
QSI reports more revenue ($2.44M vs $682.0K for QUBT, latest fiscal year).
On cash runway — the metric that decides who needs to raise money first — QUBT is stronger (335mo vs 24mo).
| Metric | QUBTQuantum Computing Inc | QSIQuantum-Si |
|---|
| Market |
| Price | $9.43 | $0.9241 |
| Market Cap | $2.13B | $201.23M |
| 1Y Return | -49.4% | -51.4% |
| 52W High | $25.84 | $3.10 |
| 52W Low | $6.18 | $0.69 |
| Financials |
| Revenue (latest FY) | $682.0K | $2.44M |
| Revenue YoY | +82.8% | -20.3% |
| Net Income | $-18,674,000 | $-101,339,000 |
| Cash & Equivalents | $986.11M | $190.40M |
| Cash Runway | 335mo | 24mo |
| Risk |
| Going Concern Flag | No | No |
| ATM Offerings (dilution) | 16 | 29 |
| Daily Short Vol % | 60.4% | 38.8% |
| Beta (1Y vs SPY) | 1.85 | 1.35 |
| Government & Research |
| Federal Awards Total | $1.45M | $30.30M |
| Academic Citations | — | — |
| Patents | — | — |
| Quantum Technology |
| Physical Qubits | — | — |
| Qubit Modality | Photonic Variables (EQC — Entropy Quantum Computing) | — |
| 2Q Gate Fidelity | — | — |
| Cloud Platforms | QCi Cloud (Dirac-3), Direct API | — |
| Roadmap Target | NeuraWave commercial deployment 2026; TFLN photonic chip commercialization (POET collaboration; Luminar manufacturing) | Proteus commercial launch late 2026 (18+ amino acids, ~1,000× throughput); 20 of 20 amino acids by 2027 |
| Company |
| Founded | 2018 | 2017 |
| Headquarters | Leesburg, VA | Guilford, CT |
| Employees | — | — |
QUBT vs QSI FAQ
Is QUBT or QSI the bigger company?
QUBT is larger, with a market cap of $2.13B versus $201.23M for QSI.
Which has the longer cash runway, QUBT or QSI?
QUBT's cash runway is 335mo and QSI's is 24mo (current cash ÷ trailing-twelve-month operating burn; "CF+" means cash-flow positive).
What technology do QUBT and QSI use?
Quantum Computing Inc (QUBT): Photonic Variables (EQC — Entropy Quantum Computing). Quantum-Si (QSI): Quantum Biology. Qubit counts are not directly comparable across different modalities.
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