A look at claims from Google, HSBC, and others about quantum computing breakthroughs over the past few months that helped boost quantum computing stocks in 2025
Amid some scepticism, many say the machines can now achieve results beyond the capability of traditional computers
Context & Ripple Effects
The latest claims revive a long-running benchmark debate that began with Google's 2019 claim of quantum supremacy and later shifted toward whether qubit errors can be controlled at scale, including Google's error-correction progress.
The coverage now connects technical milestones to public-market expectations: Google and IBM have described an industrial-scale system as being in sight, while the broader sector still faces skepticism over the path from demonstrations to useful machines.
First-order effects
- Quantum-computing stocks gain a near-term catalyst as investors treat reported results beyond classical computers' capability as evidence that commercialization may be advancing.
- Google, HSBC and other companies making the claims face closer scrutiny of what their results measure and whether they translate into repeatable, practical workloads.
Second-order effects
- Rival quantum developers and incumbent compute providers are pushed to publish clearer performance evidence, especially around error correction, scaling and usable applications.
- The stock response can make access to capital more sensitive to technical announcements, rewarding companies that can substantiate progress and raising the cost of vague claims.
Third-order effects
- If claims increasingly withstand independent scrutiny, quantum computing could move from a research narrative to a capital-allocation race around scalable hardware and commercially relevant use cases.
- If demonstrations remain difficult to connect to practical workloads, the sector's valuation cycle will remain governed by the unresolved leap from sub-200-qubit systems to industrial scale rather than headline performance milestones.
The trend: Quantum computing is entering a more finance-sensitive phase in which technical benchmarks increasingly shape expectations of eventual commercial utility.