The rally is real in the sense that government money materially reduces survival risk for a sector that has been burning cash for years. But the market is probably pricing in “quantum dominance” far faster than the technology itself can mature. The gap between capital inflow and commercial utility is still enormous. 

The next milestone is not “a quantum computer exists”. That already happened in limited forms. The market now needs proof of economic usefulness. Specifically:

Demonstrable quantum advantage on commercially relevant workloads

Error correction that scales reliably

Higher qubit counts with lower error rates

Real enterprise revenue beyond pilot projects

Integration into AI, pharma, defence, optimisation, or cryptography stacks

Right now, most listed names are still effectively pre-profit R&D vehicles. D-Wave focuses more on annealing systems, while Rigetti Computing and IonQ are betting on different hardware architectures with no guaranteed winner yet. Even the industry itself does not fully agree on the best path.

What changes the equation is Washington treating quantum as a national security and strategic infrastructure race against China, similar to semiconductors and AI. That means funding can continue even before profitability. 

But rallies built on policy headlines tend to become momentum trades first and investment theses second. A +30% move in highly unprofitable firms in one session is usually not “careful repricing”. It is speculative positioning, short covering, and retail FOMO layered together.

So can it sustain? Short term: yes, if:

more grants/contracts arrive,

Big Tech partnerships deepen,

or a major technical breakthrough lands.

But absent tangible milestones, these names can easily retrace 30-60% just as violently. Quantum investing today resembles early AI accelerators around 2016-2018: potentially world-changing, but many public market winners may not survive long enough to monetise the vision.

The uncomfortable truth is that the theme may be correct while many current stocks still fail. IBM, Google, Microsoft, and perhaps future infrastructure suppliers may ultimately capture more value than today’s pure-play retail favourites.