2026 is shaping up as a paradox for quantum computing. While the technology’s biggest public companies—valued collectively at over $36 billion—continue to attract investor enthusiasm, startups face a notable slowdown in funding. Despite deal counts remaining healthy and some large rounds closing, the overall investment volume has plummeted from last year’s record-breaking highs. Total startup funding in the sector is projected to hit around $1.2 billion this year—less than a third of 2025’s $4.1 billion peak—and yet, that’s still a respectable figure in context.

In the startup arena, activity persists but with a different rhythm. The biggest deals lately include Vancouver-based Photonic’s $200 million raise at a $2 billion valuation, and Dutch firm QuantWare securing $178 million to develop its VIO quantum processor. London-based Quantum Motion raised $160 million to commercialize silicon-based quantum tech, promising utility-scale computing at a fraction of the cost. These large rounds signal that while the number of deals might be down, significant players are still mobilizing capital—just perhaps with more caution or strategic focus.

Meanwhile, public markets have embraced quantum companies with enthusiasm. Several pure-play quantum firms—IonQ, Rigetti, D-Wave, and Xanadu—are now valued collectively at over $36 billion, despite some decline from late-2025 peaks. Notably, Xanadu went public via SPAC merger earlier this year, hitting a market cap near $5 billion. These valuations suggest that investor confidence in the technology’s long-term potential remains intact, even if private funding cools. Public investors seem to be betting on the industry’s eventual transformation, not just the current state of hardware and algorithms.

Strategic moves in M&A also highlight industry confidence. IonQ’s $1.08 billion acquisition of Oxford Ionics, for example, underscores a trend of public quantum firms consolidating promising startups to accelerate development. D-Wave, despite its valuation dip, continues to expand its hardware portfolio and partnerships, signaling a focus on scaling existing platforms while maintaining industry relevance. Meanwhile, Quantinuum—Honeywell’s flagship quantum subsidiary—filed for an IPO, marking a pivotal transition from experimental labs to scalable commercial operations. Their full-stack approach, combining hardware with application-specific tools, positions them as a front-runner in turning quantum computing into a business-ready technology.

Investors remain deeply engaged but are more selective. The most active venture capital firms—Quantonation, BDC Capital, Bpifrance—continue to fund promising startups, but the overall deal flow is more measured. Noteworthy is the involvement of corporate venture arms, including Samsung Ventures and Honeywell Ventures, indicating that big industry players see strategic value in early-stage quantum innovations. Government-backed funds and national initiatives, especially in Europe and Israel, also bolster the ecosystem—funding pilot lines, advancing chip manufacturing, and supporting R&D—to maintain the sector’s long-term competitiveness.

What does it all add up to? Despite a slowdown in startup funding, the quantum industry remains resilient. Public markets, strategic acquisitions, and continued government backing suggest that the core technology is gaining momentum—just not at the breakneck speed of recent years. The sector’s future hinges on whether hardware can scale, error correction improves, and practical applications emerge. For now, quantum is less a sprint and more a measured marathon—where the stakes are high, and the finish line remains distant but unmistakably within sight.