Latest Startup and Venture Capital News as of September 17, 2026: Temporal Mega-Round in AI Infrastructure, Unicorns Exein and Open Cosmos, EUCLYD Semiconductor Deal, Wave of "Physical AI" Rounds in China, Fed Meeting, Holtec IPO, and Anthropic Listing Preparation

By mid-September 2026, the global venture market is witnessing a notable shift: capital is moving away from the "wrappers" around language models to infrastructure that makes artificial intelligence reliable, affordable, and applicable in the physical world. In the last 48 hours, venture funds have closed a series of large funding rounds—from $550 million in Temporal to €300 million in Open Cosmos—while Europe welcomed two new unicorns in a single day. Concurrently, investors are reassessing capital cost models: the Federal Reserve meeting on September 16, where markets priced in over 90% probability of the first rate hike since 2023, sets a new framework for late-stage startup valuations.

Key topics on the venture agenda for Thursday, September 17, 2026:

• Temporal Mega-Round. $550 million at a valuation of $12.55 billion—AI agency infrastructure becomes an independent asset class.
• New Unicorns in Europe. Italian Exein ($1.7 billion) and British Open Cosmos (over $1 billion) confirm demand for cybersecurity and space.
• Semiconductors and "Physical AI." EUCLYD secures over €200 million, China finances robotics and chip inspection.
• Macrofactor. The Fed and expensive venture debt reshape the mathematics of late-stage rounds.
• IPO Window. Pricing of Holtec and Orion180, expectations for Anthropic's prospectus and Oura's listing.
• Russia and the CIS. The market has contracted nearly in half, with capital concentrating in the top five deals.

Deal of the Day: Temporal Raises $550 Million for AI Agent "Reliability"

The platform Temporal, which develops durable execution infrastructure for distributed applications and AI agents, closed a Series E round of $550 million at a valuation of $12.55 billion. The round was led by Lightspeed, with co-investors including Wellington Management, Growth Equity at Goldman Sachs Alternatives, and Tiger Global; T. Rowe Price and SV Angel participated, while returning investors included a16z, Sequoia, Index, and GIC.

The dynamics are noteworthy: just in February 2026, the company was valued at $5 billion during its Series D, meaning the valuation has more than doubled in seven months. The justification lies in the operational metrics that are rarely seen in startups of this scale:

1. Annual revenue exceeded $250 million, with a year-on-year growth of over 200%;
2. Net revenue retention (NDR) remains above 200% since February;
3. In August, the platform processed 1.9 trillion billable actions, a growth of over 350%;
4. The number of paying customers reached 4,300 (+139%), including OpenAI, Netflix, Snap, NVIDIA, and JPMorgan Chase.

For venture investors, Temporal is a marker of a new thesis: the winner is not the one who trains the best model, but the one who controls how models execute multi-step processes in production.

Europe: Two New Unicorns in One Day

Exein—The Most Valued Cybersecurity Startup in Europe

Roman-based Exein raised $270 million at a valuation of $1.7 billion in an oversubscribed round led by Headline. The deal involved Sofina, Goldman Sachs, a group of the European Investment Bank, KfW Capital, and T.Capital, along with previous investors Balderton, HV, and Lakestar. The total amount of capital raised has exceeded $600 million, the valuation has increased 30 times over the past two years, and the ARR in the first half of 2026 has quadrupled.

The company protects "physical AI"—robots, drones, autonomous transport, and industrial devices—at the operating system core level. Its technology covers over 2 billion connected devices, with about half of its revenue coming from the Asia-Pacific region. The funds will be used for expansion into the U.S., M&A, and the development of its own fundamental model for machine safety.

Open Cosmos—A Profitable Space Unicorn

British satellite manufacturer Open Cosmos closed its Series C round at €300 million (around $348 million) with a valuation exceeding $1 billion. The round was led by Lightrock and ETF Partners; participants included the BCI pension fund, Institut Català de Finances, Entrepreneurs First, Phoenix Court, and British NSSIF, while Claret Capital provided venture debt. The company produces up to one satellite a day across four factories, has demonstrated five consecutive years of profitable growth, and has contracted over $370 million in deals in three and a half years. The round was oversubscribed and deliberately targeted European investors—a signal that sovereign space infrastructure is becoming a priority for continental capital.

Semiconductors: EUCLYD Targets Inference Costs

Eindhoven-based startup EUCLYD raised over €200 million in its Series A round, jointly led by Samsung, Somerset Capital Partners, Scaleup Europe Fund managed by EQT, and Innovation Industries. Former ASML CEO Peter Wennink has been appointed chair of the board. The company is developing specialized ASICs and data center-level systems that reduce power consumption and memory bandwidth requirements when servicing large models. The thesis is straightforward: as inference becomes the largest computational load, the "per token" economics transforms into a separate semiconductor opportunity, regardless of whose model wins.

Asia: China Dominates "Physical AI" Rounds

The Asian trading day brought a cluster of deals unified by one logic—funding for components and operating systems for robots, not demonstration prototypes:

• ENCOS (Nanjing)—over 300 million yuan in Series B led by CITIC Goldstone for the production of integrated robotic joints and manipulators;
• Yincheng Intelligence (Shanghai)—around 100 million yuan in Series A, alongside a comparable size order from SF Express for sorting robots;
• Kangwei Vision (Shenzhen)—about 100 million yuan for optical inspection of AI server boards;
• Nutshell Therapeutics—C1 round for tens of millions of dollars from Trustbridge and Decheng, with a candidate already in clinical phase I.

Complementing the picture are Hong Kong's Qupital with $300 million in capital commitments in trade finance, Stockholm's Tandem Health with $100 million in Series B from EQT, and Tokyo's Yoom with its first external round of ¥700 million for orchestrating AI agents in corporate processes.

Macro: Fed, Venture Debt, and New Capital Pricing

The Fed's rate has been maintained in the range of 3.50–3.75% since December 2025; however, inflation in the U.S. remained at 3.4% as of August amid an energy shock caused by the conflict in the Middle East. Ahead of the meeting on September 16, futures were pricing in about a 93% probability of a 25 basis points increase—the first since 2023. For the venture market, this implies a “high-cost money for a long time” scenario: floating credit lines tied to SOFR are being revalued every 90 days, and every 25 basis points adds about $25,000 annually to the costs for every $10 million in debt. Late-stage funds are already adjusting their multiples, while companies with growing metrics, like Temporal, continue to attract capital at premium valuations.

IPO: The Window is Open, but Selectively

2026 is heading towards the strongest outcome for the IPO market since 2021: since the beginning of the year, 331 applications have been submitted, and 280 deals have been completed. On Thursday, September 17, the pricing of two IPOs on Nasdaq is scheduled: nuclear company Holtec is offering 50 million shares at $15–18 (around $850 million), while insurer Orion180 aims to raise up to $340 million at a valuation of about $1.7 billion. Smart ring manufacturer Oura, which submitted its application on September 3, expects to be listed closer to the end of the month.

The main event of the season is Anthropic. Following a confidential S-1 submission in June and a Series H round valuing the company at $965 billion with a $65 billion round, the company is reportedly preparing its public prospectus for the end of September and a roadshow by mid-October with a target valuation of up to $2 trillion. Annual revenue as of the end of July exceeded $65 billion. The public financial data of the market leader in AI will serve as a benchmark for revaluating the entire private AI ecosystem.

Russia and the CIS: Concentration Over Growth

The Russian venture market contracted by 48% year-on-year in the first half of 2026, reaching 4.6 billion rubles, while the number of active investors dropped from 50 to 33. Private funds accounted for 67% of the volume (3.1 billion rubles across 21 deals), and corporate investments decreased by 54% to 0.4 billion rubles. The top five deals accounted for about 60% of the market, with the “Architect AI” round at 1.1 billion rubles making up nearly a quarter of the half-year volume. No foreign deals have been recorded—the market has become entirely domestic, with capital directed towards mature B2B companies with clear revenue.

What This Means for Venture Investors

1. The infrastructure layer is more expensive than the model layer. Temporal, EUCLYD, and DeepKernel demonstrate that a premium goes to those who control execution, computation, and data.
2. "Physical AI" requires proof. SF Express’ order for Yincheng and clinical phases for Nutshell are valued higher than demonstrations.
3. Sovereignty is becoming a budget item. The European rounds for Open Cosmos and EUCLYD were raised with a focus on regional capital.
4. Expensive debt changes the structure of rounds. It’s worth revisiting floating credit lines and embedding higher rates in models by year-end.
5. The IPO window is open for quality. Anthropic’s prospectus will become a benchmark for valuations of private AI companies.

Daily Summary

As of September 17, 2026, the venture market appears both generous and demanding: record rounds and new unicorns coexist with tightened criteria and rising capital costs. Investors are paying for scarce assets—efficient chips, real operational data, deeply integrated workflows, and secure infrastructure. Intelligence is becoming cheaper, while the systems translating it into reliable economic outcomes are becoming more expensive. This is where the capital is heading.