Quantum Stocks by Cash Runway
Most quantum computing companies lose money, so the question that decides who survives to the fault-tolerant era is simple: how many months of cash are left at the current burn rate? This list ranks every pure-play quantum stock by cash runway — current cash divided by trailing-twelve-month operating cash burn. "CF+" means the company generates positive operating cash flow and is not burning down its reserves at all.
As of · updates with live market data
Not ranked (no cash runway data yet): XNDU, IQMX.
The companies, in order
1. Quantum Computing Inc (QUBT) — 335mo
Quantum Computing Inc develops photonic quantum processors and reservoir quantum computing systems. Its Dirac series uses Entropy Quantum Computing (EQC) for constrained optimization, and its Neurawave product applies photonic reservoir computing to edge AI inference.
QUBT live data, financials & filings →2. Infleqtion (INFQ) — 248mo
Infleqtion (formerly ColdQuanta) designs and builds quantum computers, precision sensors, and quantum software using cold atom and neutral atom technology. Its Sqale quantum computer has been commercially deployed at the UK National Quantum Computing Centre.
INFQ live data, financials & filings →3. Rigetti Computing (RGTI) — 82mo
Rigetti Computing is a full-stack quantum-classical computing company using superconducting qubits. It fabricates its own chips at Fab-1 and provides cloud access through Quantum Cloud Services (QCS).
RGTI live data, financials & filings →4. Horizon Quantum (HQ) — 76mo
Horizon Quantum builds quantum software infrastructure — compilers, development tools, and hardware-agnostic abstraction layers. Its Triple Alpha IDE and Helium language translate classical C/Python code into quantum-accelerated applications. Operates Singapore's first commercially deployed quantum computer as a software testbed.
HQ live data, financials & filings →5. D-Wave Quantum (QBTS) — 72mo
D-Wave is the world's first commercial quantum computing company, specializing in quantum annealing technology for optimization problems. Its systems are used in logistics, finance, and drug discovery.
QBTS live data, financials & filings →6. IonQ (IONQ) — 61mo
IonQ develops trapped-ion quantum computers accessible via cloud through AWS Braket, Azure Quantum, and Google Cloud. The company builds full-stack quantum hardware and software targeting fault-tolerant quantum computing.
IONQ live data, financials & filings →7. Quantinuum (QNT) — 57mo
Quantinuum develops trapped-ion quantum computers and quantum software, spun out of Honeywell in 2021. Its H-Series and Helios systems hold world records in gate fidelity and quantum volume. Software platforms include InQuanto (quantum chemistry), Quantum Origin (cybersecurity entropy), and lambeq (quantum NLP/AI). IPO: Nasdaq June 2026.
QNT live data, financials & filings →8. Quantum-Si (QSI) — 16mo
Quantum-Si is building a semiconductor chip-based platform for single-molecule protein sequencing using quantum-detection technology. Its Platinum Pro system targets proteomics research; next-gen Proteus instrument targets late 2026 commercial launch.
QSI live data, financials & filings →9. Arqit Quantum (ARQQ) — 8mo
Arqit provides quantum-safe encryption-as-a-service via its SKA-Platform, delivering symmetric key agreements resistant to both current and future quantum computer attacks, protecting governments and enterprises.
ARQQ live data, financials & filings →Methodology: Cash runway = (cash + equivalents + short-term investments from the latest SEC filing) ÷ trailing-twelve-month operating cash burn, in months. Cash-flow-positive companies show "CF+" and rank first. ATM count = shelf/at-the-market dilution filings (S-3, 424B3/B5) in our tracker. Full methodology on the methodology page. Covers the US-listed pure-play quantum universe tracked by this site. Full metric definitions on the methodology page. Not investment advice.
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