Quantum Computing Startup Investment Slows in 2026 as Quantinuum Targets Nasdaq
Quantum computing startup investment is cooling in 2026, but the story is far from over especially with the sector’s most anticipated public debut now in motion.
According to Crunchbase data, companies in the quantum computing category have raised $1.2 billion in seed- through growth-stage funding so far this year. That pace puts quantum computing startup investment on track to fall short of last year’s record $4.1 billion, even as some significant rounds closed in recent weeks.
Big Deals Still Making Noise
The slowdown hasn’t stopped major financings from happening. Vancouver-based Photonic closed a $200 million round last week at a $2 billion valuation. Dutch startup QuantWare locked in $178 million in a Series B, while London’s Quantum Motion pulled in $160 million in a Series C co-led by DCVC and Kembara. These rounds signal that serious capital is still chasing quantum.
On the public side, pure-play quantum stocks collectively valued at over $36 billion in market cap. Toronto-based Xanadu recently went public via a SPAC merger on both the Nasdaq and the Toronto Stock Exchange, adding fresh energy to an already competitive space. IonQ’s $1.08 billion acquisition of Oxford Ionics and D-Wave’s $550 million deal to acquire Quantum Circuits show that public players are aggressively consolidating the private market.
The most watched name right now is Quantinuum, the Honeywell-majority-owned full-stack quantum platform that has filed to go public on Nasdaq. The company raised $600 million in September 2025 at a $10 billion pre-money valuation, and its IPO is expected to land substantially above that figure potentially exceeding $20 billion. Investors backed by JPMorgan, Nvidia, and Amgen are all watching closely.
Quantum computing startup investment may be easing off its highs, but the sector’s public market momentum and blockbuster IPO pipeline suggest the bigger chapter is just beginning.
