Positron AI Receives $875M Series C Round
2026-09-11
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RENO, NV, Positron AI, the AI inference hardware company built to make serving AI models dramatically cheaper and more energy efficient, has announced an $875 million Series C at a $5 billion post-money valuation.
The round was co-led by NEA, Atreides Management, Valor Equity Partners, Andra Capital, Dylan Patel's SemiAnalysis Capital and Jim Clark, the founder of Silicon Graphics and Netscape. As part of the financing, Forest Baskett of NEA, Gavin Baker of Atreides Management, Thomas Jermoluk from Jim Clark Office and Dylan Patel will join Positron's board of directors.
The financing was raised in two tranches. The Series C, $375 million at a $3.5 billion pre-money valuation, was co-led by NEA, Andra Capital, Atreides Management, Valor Equity Partners, and Dylan Patel's SemiAnalysis Capital. The Series C-1, up to $500 million, was led by NEA and Jim Clark. Additional investors include DFJ Growth, Qatar Investment Authority (QIA), Resilience Reserve, Arena Private Wealth, Natural Capital, Helena, 1517 Fund, Flume Ventures, Unless, Boardman Bay Capital Management, Fincadia Advisors, Banyan Ventures and U First Capital alongside strategic investors VentureTech Alliance, Hudson River Trading, Cisco Investments and Naver Ventures.
Positron AI builds hardware and software to make AI inference dramatically cheaper and more energy efficient. The company's shipping product, Atlas, is deployed at hyperscaler scale today, and its next-generation custom silicon, Asimov, tapes out in late 2026 with production in the second half of 2027. Asimov powers Titan, a multi-terabyte-memory inference system for long-context and next-generation AI workloads. Positron's energy-efficient architecture allows its systems to be deployed in air-cooled or liquid-cooled data centers at varying rack densities, without dependence on constrained HBM or CoWoS supply chains.
The financing was raised in two tranches. The Series C, $375 million at a $3.5 billion pre-money valuation, was co-led by NEA, Andra Capital, Atreides Management, Valor Equity Partners, and Dylan Patel's SemiAnalysis Capital. The Series C-1, up to $500 million, was led by NEA and Jim Clark. Additional investors include DFJ Growth, Qatar Investment Authority (QIA), Resilience Reserve, Arena Private Wealth, Natural Capital, Helena, 1517 Fund, Flume Ventures, Unless, Boardman Bay Capital Management, Fincadia Advisors, Banyan Ventures and U First Capital alongside strategic investors VentureTech Alliance, Hudson River Trading, Cisco Investments and Naver Ventures.
Positron AI builds hardware and software to make AI inference dramatically cheaper and more energy efficient. The company's shipping product, Atlas, is deployed at hyperscaler scale today, and its next-generation custom silicon, Asimov, tapes out in late 2026 with production in the second half of 2027. Asimov powers Titan, a multi-terabyte-memory inference system for long-context and next-generation AI workloads. Positron's energy-efficient architecture allows its systems to be deployed in air-cooled or liquid-cooled data centers at varying rack densities, without dependence on constrained HBM or CoWoS supply chains.
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