❯ Quantum computing company Oratomic raises a $475 million Series B, lifting its valuation from $1.5 billion to about $5.4 billion in three months

Two rounds in three monthsCalifornia quantum computing company Oratomic announced a $475 million Series B on October 8. According to SiliconANGLE, the round comes three months after its $300 million Series A and was co-led by six firms including ARCH, Spark Capital and Khosla Ventures, bringing total funding to $775 million and lifting the valuation from $1.5 billion to about $5.4 billion.

Doing it with ten thousand qubitsFounded in 2025, Oratomic builds qubits, the basic computing units of a quantum computer, from arrays of neutral atoms. Qubits are extremely fragile: slight disturbances in heat, electromagnetism or vibration can make them lose information, so error correction is needed. The industry generally assumes about 1 million qubits for commercially meaningful fault tolerance; Oratomic believes it needs only 10,000.

No business model yetCEO Dolev Bluvstein told the Wall Street Journal the company has no idea what the business models or exact applications will be, only that it must first build a working computer that is cheap and manufacturable. The same day, UK-based Universal Quantum announced a Series A of more than $100 million for its trapped-ion approach, co-led by DCVC and Firgun Ventures.

Capital flowing to pre-product hardwareSiliconANGLE cited McKinsey data showing the quantum computing industry generated just over $1 billion in revenue worldwide in 2025. When a one-year-old company with no settled business model is valued in the billions, the most direct effect falls on quantum companies pursuing other approaches: investors will compare them on metrics such as qubits required, and the bar for raising money rises for everyone.

▮ SIGNALQuantum fundraising is starting to move at the pace of AI model companies, but without revenue to verify it, the valuation rests on an engineering hypothesis that has yet to be proven.