Quantum Market Cap

QSI vs XNDU: Which Quantum Stock Is Better?

Quantum-Si (Quantum Biology) vs Xanadu (Photonic) — live market, SEC financial and quantum-hardware data side by side.

XNDU is the larger company at $3.53B market cap, about 18× the size of QSI ($201.23M).

MetricQSIQuantum-SiXNDUXanadu
Market
Price$0.9241$11.85
Market Cap$201.23M$3.53B
1Y Return-51.4%—
52W High$3.10$42.44
52W Low$0.69$6.97
Financials
Revenue (latest FY)$2.44M—
Revenue YoY-20.3%—
Net Income$-101,339,000—
Cash & Equivalents$190.40M$272.46M
Cash Runway24mo—
Risk
Going Concern FlagNoNo
ATM Offerings (dilution)296
Daily Short Vol %38.8%47.0%
Beta (1Y vs SPY)1.350.62
Government & Research
Federal Awards Total$30.30M—
Academic Citations—114K
Patents——
Quantum Technology
Physical Qubits—12
Qubit Modality—Logical GKP Qubits (Photonic / CV-QC)
2Q Gate Fidelity——
Cloud Platforms—PennyLane (Open Source), Xanadu Quantum Cloud (partner access)
Roadmap TargetProteus commercial launch late 2026 (18+ amino acids, ~1,000× throughput); 20 of 20 amino acids by 2027Fault-tolerant photonic quantum data center by 2028–2029; 500 logical qubits by 2029–2030
Company
Founded20172016
HeadquartersGuilford, CTToronto, ON, Canada
Employees——

QSI vs XNDU FAQ

Is QSI or XNDU the bigger company?

XNDU is larger, with a market cap of $3.53B versus $201.23M for QSI.

Which has the longer cash runway, QSI or XNDU?

QSI's cash runway is 24mo and XNDU's is — (current cash ÷ trailing-twelve-month operating burn; "CF+" means cash-flow positive).

What technology do QSI and XNDU use?

Quantum-Si (QSI): Quantum Biology. Xanadu (XNDU): Logical GKP Qubits (Photonic / CV-QC). Qubit counts are not directly comparable across different modalities.

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