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OLIX raised a €270.5M Series B led by Fundomo, with Arm and Hudson River Trading joining, valuing the London chipmaker at €2.8B just two years after founding.
Key Takeaways
- OLIX raised €270.5M ($312M) in a Series B round announced August 3, 2026, at a €2.8B ($3.3B) valuation.
- The round came six months after a $220M Series A valued the company at $1B - more than tripling its worth.
- Investors include Fundomo (lead), Arm, Hudson River Trading, the UK government's Sovereign AI venture fund, and Netflix co-founder Reed Hastings.
Lead
OLIX, a London-based startup building specialised chips for AI inference, closed a €270.5 million Series B on August 3, 2026, at a €2.8 billion valuation. The round arrives just over two years after the company was incorporated, and only six months after a $220 million Series A priced it at $1 billion. Fundomo led the new round, with Arm and Hudson River Trading among the backers, alongside the UK government's Sovereign AI venture fund and angel investor Reed Hastings. The raise is described as the largest semiconductor venture round ever closed by a European company.
What Does OLIX Actually Build?
OLIX makes silicon for AI inference, the computational stage where trained models generate outputs rather than learn from data. Its first product, the DX-1, is a decode accelerator that targets the decode phase of large language model inference - the step that determines how fast a chatbot or agent produces each token. Unlike most AI accelerators, DX-1 uses SRAM instead of high-bandwidth memory (HBM), a design choice that sidesteps the advanced packaging bottleneck currently constraining Nvidia and its rivals. The chip sits inside OLIX's broader X-1 platform, which distributes a model across many chips connected by an optical network that moves data with light rather than copper. The company says this cuts latency and energy use compared with conventional cluster architectures. DX-1 is not expected to reach customers until late 2027, meaning the entire valuation rests on a product that has yet to ship.
Why Did Investors Pay 3.3x the Series A Price in Six Months?
The jump from a $1 billion valuation in February to $3.3 billion in August reflects investor conviction that inference, not training, is where the next wave of AI infrastructure spending lands. Nvidia still dominates both training and inference hardware, but hyperscalers and AI labs have grown vocal about wanting alternatives that reduce dependence on HBM and CoWoS packaging, both supply-constrained inputs controlled by a handful of Asian manufacturers. OLIX's SRAM-based, optics-linked approach is a direct pitch to that anxiety. Strategic investors reinforce the thesis: Arm's involvement signals interest in chip architectures that could complement its own IP licensing business, while Hudson River Trading, a quantitative trading firm with its own low-latency computing needs, brings a customer's-eye view rather than a pure financial one. The UK government's Sovereign AI fund participation also fits a policy push to build domestic compute capacity outside US and Chinese supply chains.
Founder and Company History
OLIX was founded by James Dacombe, a 25-year-old Thiel Fellow, who incorporated the business as Flux Computing in 2024 before renaming it OLIX in January 2026. The rebrand preceded the Series A by weeks and the Series B by six months, an unusually fast cadence for a hardware company that has not yet shipped a chip. Existing Series A backers, including Hummingbird Ventures, Crane, Plural, Creandum, Phoenix Court and Transition, all increased their commitments in the new round rather than being diluted out, a signal that early investors see the valuation jump as durable rather than momentum-driven. The company also added Professor Nick McKeown, a Stanford networking researcher, to its board alongside the raise.
Market Reaction and Context
The round lands amid a broader surge in AI chip funding across Europe, where semiconductor startups have historically struggled to match Silicon Valley's capital depth. OLIX's €2.8 billion valuation now exceeds most publicly listed European chip designers by revenue multiple, despite the company having no shipping product and no disclosed revenue. That gap between valuation and commercial proof points is the central risk: DX-1's late-2027 customer availability means OLIX must execute on a novel SRAM-and-optics architecture at scale before the thesis is tested against real workloads. Comparisons to other inference-focused chip startups, such as Groq and Etched in the US, are inevitable, though OLIX's optical interconnect approach differentiates its technical bet.
Outlook
OLIX now carries a valuation built almost entirely on architecture promises rather than shipped silicon, with the DX-1 accelerator not due to customers until the second half of 2027. The company plans to expand its custom silicon platform across offices in London, Bristol, Austin, Toronto and San Francisco using the fresh capital. Whether the round marks the start of a durable European alternative to Nvidia's inference stack, or a valuation built ahead of execution, will depend on whether DX-1 delivers the latency and energy gains OLIX has promised once it reaches paying customers.
