AI startups and AI-adjacent companies raised over $1.6 billion this week across nuclear energy, financial automation, fintech, and enterprise AI. From X-energy’s massive $700 million nuclear round powering AI data centers to Revolut’s $75 billion valuation, capital continued flowing to companies building both the energy infrastructure for AI and the intelligent automation transforming traditional industries.
X-energy Closes $700 Million Series D for Advanced Nuclear Reactors
Fund Raised: $700 million
Stage: Series D
Total Funding: $1.8 billion
Investors: Jane Street (lead), ARK Invest, Galvanize, Hood River Capital Management, Point72, Reaves Asset Management, XTX Ventures, Ares Management funds, Corner Capital, Emerson Collective, NGP, Segra Capital Management
Rockville, Maryland-based X-energy announced it closed an oversubscribed $700 million Series D round led by Jane Street, bringing total capital raised to $1.8 billion. The advanced nuclear reactor developer secured funding from more than ten institutional investors in one of the largest financing rounds for a nuclear energy startup.
The deal comes less than a year after X-energy expanded its Series C from $500 million to $700 million in late 2024, with Amazon’s Climate Pledge Fund participating. That investment was tied to a partnership developing more than 5 gigawatts of power generation capacity—energy critical for powering the massive data centers required by AI workloads.
Founded by Kam Ghaffarian (Executive Chairman) and led by CEO J. Clay Sell, X-energy develops the Xe-100, a fourth-generation high-temperature, gas-cooled small modular reactor (SMR) capable of producing 80 megawatts of power over its 60-year operational life. The company’s innovative approach addresses AI’s emerging energy bottleneck.
X-energy is currently constructing a 214,812 square-foot TRISO-X fuel fabrication facility in Oak Ridge capable of producing 700,000 fuel pebbles annually—enough to fuel 11 Xe-100 reactors. When fully operational, the plant will employ 500 people.
The funding will support supply chain expansion, manufacturing scale-up, and commercial project delivery. With nuclear power emerging as a critical solution for AI’s massive energy demands, X-energy is positioned at the intersection of the energy transition and the AI infrastructure buildout.
Revolut Hits $75 Billion Valuation in Secondary Share Sale
Valuation: $75 billion
Transaction Type: Secondary share sale
Previous Valuation: $45 billion (2024)
Investors: Coatue (lead), Greenoaks, Dragoneer, Fidelity Management & Research Company, Andreessen Horowitz, Franklin Templeton, T. Rowe Price Associates, NVentures (NVIDIA’s VC arm)
London-based Revolut announced it completed a secondary share sale valuing the global fintech leader at $75 billion, a stunning 67% increase from its $45 billion valuation just one year ago. The transaction positions Revolut as Europe’s most valuable private technology company and among the world’s most valuable private financial services firms.
Led by CEO and co-founder Nik Storonsky, Revolut has grown from a simple money transfer app launched in 2015 to a full-service financial super-app serving over 65 million customers worldwide. The company offers multi-currency accounts, payment and transfer services, cryptocurrency products, stock trading, commodities, insurance, and increasingly traditional banking services.
2024-2025 financial performance:
- 2024 revenue: $4.0 billion (up 72% YoY)
- 2024 profit before tax: $1.4 billion (up 149% YoY)
- 2024 net profit: $1.0 billion (£790 million)
- Customer base: 65+ million retail customers globally
- Revolut Business: $1 billion annualized revenue achieved in 2025
- Wealth division revenue: $647 million in 2024 (up 298% from $158M in 2023)
The secondary sale allowed current employees to liquidate shares, marking the fifth time Revolut has enabled employee share sales. The company operates one of the most liquid employee equity programs among private companies, reflecting Storonsky’s commitment to sharing success with the team that built the platform.
NVIDIA’s participation through NVentures signals deepening collaboration between Revolut and the chip giant in artificial intelligence applications. As Revolut expands its product suite and global footprint, AI powers everything from fraud detection and risk assessment to personalized financial recommendations and automated support.
The valuation now exceeds several established European banks including Barclays, Société Générale, and Deutsche Bank—despite Revolut operating entirely without physical branches. This reflects investor confidence that digital-native banking infrastructure will eventually displace legacy systems.
Model ML Raises $75 Million Series A for Investment Banking Automation
Fund Raised: $75 million
Stage: Series A
Total Funding: $87 million
Investors: FT Partners (lead), Y Combinator, QED Investors, 13Books Capital, Latitude, LocalGlobe
New York and London-based Model ML announced it raised $75 million in a Series A round led by FT Partners, one of the largest fintech Series A rounds in history. The company emerged from stealth just twelve months ago and raised a $12 million seed round led by Y Combinator and LocalGlobe in February 2025.
Founded by brothers Chaz Englander (CEO) and Arnie Englander (CTO), Model ML builds AI workflow automation specifically for financial services. The platform enables banks, asset managers, and consulting firms to automate creation of client-ready pitch decks, investment memos, due diligence reports, and financial models—documents that traditionally require armies of junior analysts working weekends.
Model ML’s AI agents don’t just retrieve data or generate chat responses. They interpret complex schemas, reason across multiple data sources, write code to extract and transform information, and generate finished, branded outputs matching institutional formatting standards. The system integrates with Salesforce, Google Workspace, PitchBook, Crunchbase, and internal data systems.
The company deploys a single-tenant architecture where each institution runs Model ML inside its own Azure environment. This addresses the banking industry’s stringent data residency, privacy, and compliance requirements—critical for financial institutions handling sensitive M&A data, investment strategies, and client information.
Model ML recently tested its verification workflow against consultants from McKinsey and Bain on real Word and PowerPoint deliverables. The consultants required over an hour to complete verification. Model ML finished in under three minutes while catching more errors. The system wasn’t just 20x faster—it delivered higher accuracy.
Other Notable Rounds
Tenzai Raises $75 Million Seed for AI-Powered Security Testing
Fund Raised: $75 million
Stage: Seed
Tenzai secured $75 million in seed funding to build AI-driven “hacker” agents for continuous offensive security testing. The company’s autonomous security agents continuously probe enterprise defenses, identifying vulnerabilities before malicious actors can exploit them. This represents one of the largest seed rounds of November 2025.
Phrontline Biopharma Closes $60 Million Pre-A+
Fund Raised: $60 million
Stage: Pre-A+
Phrontline Biopharma raised $60 million to advance bispecific antibody-drug conjugate (ADC) cancer therapeutics across China and the United States. The company leverages AI for drug discovery, accelerating development of targeted cancer treatments.
Overstory Raises $43 Million Series B
Fund Raised: $43 million
Stage: Series B
Overstory secured $43 million to expand its AI wildfire and vegetation risk platform for electric utilities. The company uses geospatial AI and satellite imagery to predict wildfire risks, helping utilities prevent catastrophic fires through proactive vegetation management. Overstory’s technology has become critical infrastructure as climate change intensifies wildfire seasons.
Clover Security Raises $36 Million Series A
Fund Raised: $36 million
Stage: Series A
Clover Security raised $36 million to embed AI security agents into developer workflows and product lifecycles. The platform provides proactive security analysis integrated directly into development environments, shifting security left in the software development process rather than treating it as a late-stage gate.
DualBird Closes $25 Million Combined Seed and Series A
Fund Raised: $25 million
Stage: Seed + Series A
DualBird raised $25 million to deliver hardware-grade cloud acceleration purely through software. The company’s technology enables performance improvements without expensive hardware upgrades, addressing growing demand for compute efficiency as AI workloads expand.
Tidalwave Secures $22 Million Series A
Fund Raised: $22 million
Stage: Series A
San Francisco-based Tidalwave raised $22 million to accelerate AI mortgage automation. The platform deploys autonomous AI agents to handle end-to-end mortgage tasks including income verification and underwriting, targeting massive reduction in the industry-standard 43-day loan closing times. Tidalwave aims to process 200,000+ loans annually by 2026, representing approximately 4% of projected U.S. mortgage originations.
Vijil Raises $17 Million Series A
Fund Raised: $17 million
Stage: Series A
Total Funding: $23 million
Vijil secured $17 million to provide testing, monitoring, and guardrails for enterprise AI agents. As organizations deploy autonomous AI systems at scale, Vijil enables validation before and after deployment by synthesizing customer-specific test suites and supporting open-source foundation models. The company addresses the emerging need for AI governance infrastructure.
Flux Marine Raises $15 Million Series A
Fund Raised: $15 million
Total Funding: $30+ million since 2020
Investors: Existing investors, customers, Collide Capital (new)
Bristol, Rhode Island-based Flux Marine closed $15 million to scale production of electric outboard motors. Led by CEO Ben Sorkin, the company commercialized a 115-horsepower electric outboard engine and modular battery system that integrates with various boat hulls, bringing electrification to marine propulsion.
The week’s funding activity reinforces a broader pattern: infrastructure for AI (energy, compute) and AI-enabled automation of complex professional work dominate late-2025 investment. Companies building physical infrastructure (nuclear reactors, data centers) or automating high-stakes knowledge work (banking, consulting, legal) attract premium valuations and top-tier investors.
The geographic distribution remains U.S. and Europe-focused, with X-energy in Maryland, Model ML spanning New York/London, and Revolut headquartered in London while expanding globally. However, these companies all operate globally—Model ML serves banks across continents, Revolut targets 100 countries, and X-energy’s SMRs will power data centers worldwide.
As we approach 2026, expect continued concentration of capital in proven companies addressing massive markets with clear paths to profitability. The AI funding boom isn’t slowing—it’s maturing, with investors favoring infrastructure, automation, and sustainable business models over experimental research projects.
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