Quantum-Si (Quantum Biology) vs Horizon Quantum (Quantum Software) — live market, SEC financial and quantum-hardware data side by side.
Direct verdict: QSI vs HQ
HQ leads this data snapshot on 3 of the five headline market, financial, runway, return and dilution measures with comparable data. The better investment still depends on valuation, technology execution and risk tolerance.
HQ is the larger company at $880.28M market cap, about 3.3× the size of QSI ($265.67M).
QSI reports more revenue ($2.44M vs $38.88K for HQ, latest fiscal year).
On cash runway — the metric that decides who needs to raise money first — HQ is stronger (86mo vs 15mo).
Proteus commercial launch targeted for Q2 2027 with a 20-amino-acid commercial kit; interim September 2026 data project approximately 60× more alignments per full run than Platinum Pro
Triple Alpha early access launched on Ember-1 in Q2 2026; full-stack enterprise quantum application platform 2026–2027
Company
Founded
2017
2018
Headquarters
Guilford, CT
Singapore
Employees
145
—
Company DNA0–100 rank vs all tracked stocks · missing data = 0
Momentum = 1Y return · Scale = market cap · Runway capped at 36mo · Gov $ = federal awards · Research = citations + patents. Dollar axes use log scale.
HQ is larger, with a market cap of $880.28M versus $265.67M for QSI.
Which has the longer cash runway, QSI or HQ?
QSI's cash runway is 15mo and HQ's is 86mo (current cash ÷ trailing-twelve-month operating burn; "CF+" means cash-flow positive).
What technology do QSI and HQ use?
Quantum-Si (QSI): Quantum Biology. Horizon Quantum (HQ): Software-Defined (Hardware-Agnostic). Qubit counts are not directly comparable across different modalities.