Analyst note · Silicon spin
Quantum Motion Silicon spin
Full-stack silicon CMOS spin qubits manufactured in standard foundries — closest path to leveraging $500B semiconductor capex.
Full-stack silicon CMOS spin qubits manufactured in standard foundries — closest path to leveraging $500B semiconductor capex.
— Ledger Desk · analyst thesis
Bull case
▲ upsideSilicon CMOS scaling is the only modality with a proven trillion-dollar industrial blueprint. $160M Series C closing May 2026 — largest UK quantum VC round. Sept 2025 delivered the UK's first full-stack silicon CMOS quantum computer to NQCC. DARPA QBI Stage B. GlobalFoundries partnership.
Bear case
▼ downsideSilicon spin qubits trail superconducting and neutral atoms by 3+ years on error rates and qubit count. UK funding base is shallower than US/China.
Ledger Score · Quantum Motion
The Ledger reads cautious
UK's national silicon-spin champion with the cleanest manufacturing story in the Stage B field; $160M Series C.
UK's national silicon-spin champion with the cleanest manufacturing story in the Stage B field; $160M Series C.
Technology
65
Capital
80
Commercial
30
Government
80
Components are independently scored and weighted. See methodology.
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A profile is a snapshot of an argument, not a verdict. The Ledger updates the score nightly; the thesis we revisit only when the facts change.
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