Oratomic Raises $475 Million In Series B Round From ARCH Venture Partners And Others

Oratomic, a Pasadena, Calif.-based quantum computing startup founded in 2025, raised $475 million in a Series B round co-led by ARCH Venture Partners, Spark Capital, Khosla Ventures, Index Ventures, General Catalyst and Bezos Expeditions. The funding brings Oratomic’s total capital raised to $775 million and lifts its valuation to $5.4 billion from $1.5 billion just three months after its Series A; CEO and co-founder Dolev Bluvstein said the company will use the capital to tackle engineering challenges as it develops a large-scale, fault-tolerant quantum computer that it expects to have ready by 2030.

FOUNDER: Dolev Bluvstein

INVESTORS: ARCH Venture Partners, Spark Capital, Khosla Ventures, Index Ventures, General Catalyst & Bezos Expeditions

ROUND: Series B AMOUNT: $475,000,000

HQ: Pasadena, California

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