For those tracking the pulse of the startup ecosystem, this week’s activity offers a compelling narrative of strategic capital deployment. The Crunchbase Megadeals Board, which curates a list of $100 million-plus venture deals to U.S.-based companies in 2026, will undoubtedly see a significant update reflecting this intense period of investment. This weekly feature serves as a crucial barometer, and last week’s roundup, featuring companies like Safe Superintelligence and Commonwealth Fusion, merely hinted at the seismic shifts that were to follow. The sheer volume and magnitude of this week’s funding rounds suggest a collective investor belief in the long-term potential of these ventures, many of which are addressing some of the most pressing global challenges, from energy security and climate change to advanced manufacturing and digital transformation.

The venture capital market in 2026 has shown a remarkable resilience and strategic pivot towards foundational technologies. While some sectors might experience ebbs and flows, the consistent flow of capital into areas like AI infrastructure, sustainable energy solutions, and advanced industrial capabilities highlights a clear investment thesis: empower the next generation of industry leaders. The concentration of funding in late-stage rounds also signals a maturing ecosystem, where investors are increasingly willing to pour significant capital into proven models and technologies that are on the cusp of widespread adoption or massive scaling. The valuations achieved by many of these companies—some soaring into the multi-billion-dollar range—are a testament to the perceived market opportunities and the strength of their underlying intellectual property and execution capabilities.

Let’s delve deeper into the top 10 funding rounds that defined this extraordinary week:

1. Hadrian, $1.37 Billion, Manufacturing: Topping the list, Hadrian, a developer pioneering highly automated factories, secured an monumental $1.37 billion in Series D funding. This round was led by a formidable syndicate of investors including WCM Investment Management, Washington Harbour Partners, Valor Equity Partners, 137 Ventures, JP Morgan Chase, and Baillie Gifford. This massive infusion of capital has propelled the 6-year-old, Torrance, California-based company to an impressive $7.87 billion valuation. Hadrian’s mission is particularly resonant in 2026, as global supply chains continue to seek resilience and efficiency, and national security interests push for the reshoring of critical manufacturing capabilities. By leveraging advanced robotics, AI, and sophisticated software, Hadrian is not merely building factories; it’s redefining the very paradigm of industrial production, enabling faster, more precise, and more cost-effective manufacturing of complex components, particularly for aerospace, defense, and other high-tech industries. This funding will undoubtedly accelerate their expansion, allowing them to scale their innovative factory models and potentially disrupt traditional manufacturing processes globally.

2. (Tied) Base Power, $1 Billion, Energy Storage: Hailing from Austin, Base Power, a developer specializing in residential battery energy storage systems, achieved a significant milestone by raising $1 billion in Series D financing. This round, led by Ribbit Capital, Addition, Valor Equity Partners, and JP Morgan Chase, catapulted the company to an astounding $13 billion post-money valuation. The timing of this financing coincided with the official launch of their flagship product, the Base Core home battery, signaling a powerful market entry. Base Power is addressing the escalating demand for reliable, decentralized energy solutions, crucial in an era of increasing grid instability and a growing reliance on intermittent renewable energy sources like solar. Their systems offer homeowners greater energy independence, resilience against outages, and the ability to optimize energy consumption, playing a pivotal role in the ongoing transition towards a smarter, more sustainable energy infrastructure.

3. (Tied) Valar Atomics, $1 Billion, Nuclear Power: In a powerful testament to the renewed global interest in nuclear energy as a clean, reliable, and baseload power source, Valar Atomics closed on a robust $1 billion in Series B funding. This significant round was spearheaded by Sequoia Capital, one of the venture capital industry’s most influential firms. The El Segundo, California-based company focuses on developing cutting-edge technology and infrastructure for delivering advanced nuclear energy solutions. Complementing their equity raise, Valar Atomics also secured a substantial $200 million credit facility led by Erebor and JP Morgan, providing additional financial muscle for their capital-intensive projects. As the world grapples with energy security concerns and the urgent need to decarbonize power grids, Valar Atomics represents a forward-looking investment in a technology often overlooked but now seen as indispensable for achieving net-zero emissions goals. Their focus likely spans advanced reactor designs, fuel cycle innovations, and the modularization of nuclear power generation.

4. Lumilens, $700 Million, AI Connectivity: Emerging from stealth mode with a bang, Lumilens announced an impressive over $700 million in new funding, signaling its ambition in the critical domain of AI infrastructure connectivity. This substantial financing round was led by Atreides Management, Bain Capital Ventures, Meritech Capital, Seligman Ventures, and Spark Capital. The San Jose, California-based startup is developing a connectivity platform designed to optimize and accelerate data flow within and between complex AI systems. In an era where AI models are becoming exponentially larger and more demanding, the bottleneck often lies not just in computational power but in the efficient movement of data. Lumilens is poised to become a vital enabler for the next generation of AI development and deployment, ensuring that the vast amounts of data required for training and inference can be processed with minimal latency and maximum throughput, thereby unlocking new possibilities for AI innovation.

5. Whatnot, $545 Million, Live Shopping: The live shopping marketplace Whatnot demonstrated the enduring vibrancy of consumer-facing platforms by bagging $545 million in Series G funding. This late-stage round reportedly propelled the Los Angeles-based company to an impressive $20 billion valuation, underscoring investor confidence in the rapidly evolving e-commerce sector. Iconiq Capital, Lightspeed Venture Partners, and Avra Capital were among the lead investors, recognizing Whatnot’s strong position in the market. Whatnot blends the entertainment of live streaming with the immediacy of online commerce, creating an engaging platform where sellers can showcase products and interact with buyers in real-time. This model has proven particularly effective for collectibles, vintage items, and unique goods, tapping into a growing consumer preference for interactive and community-driven shopping experiences that transcend traditional online retail.

6. Mariana Minerals, $310 Million, Critical Minerals: Addressing another pressing global challenge – the reliable supply of critical minerals – Mariana Minerals picked up $310 million in Series B financing led by Khosla Ventures. The 4-year-old company distinguishes itself by being a software-focused developer of projects aimed at sourcing these essential materials. Mariana Minerals engineers, builds, and operates mines and refineries by leveraging its proprietary software platform, which likely optimizes everything from geological exploration and extraction processes to supply chain management and environmental impact assessments. As the world transitions to electric vehicles, renewable energy, and advanced electronics, the demand for rare earth elements, lithium, cobalt, and other critical minerals is skyrocketing. Mariana Minerals’ tech-driven approach seeks to make the extraction and processing of these vital resources more efficient, sustainable, and transparent, mitigating supply chain risks and fostering energy independence.

7. Volta, $300 Million, AI Infrastructure: Another significant player emerging from stealth, Volta announced its launch and a substantial Series A funding round of $300 million, securing a $2.4 billion valuation. The round was led by a powerhouse consortium including Azora, Andreessen Horowitz, Altimeter, and Nvidia. Volta positions itself as a developer of AI cloud infrastructure, a foundational layer crucial for the explosion of AI applications. As the demand for AI computation continues to grow exponentially, companies like Volta are building the specialized hardware, software, and network architectures required to power large language models, complex simulations, and advanced machine learning workloads. Their emergence with such a hefty valuation and top-tier investors signifies the immense capital requirements and strategic importance of building the "picks and shovels" for the AI gold rush.

8. Horizon3, $250 Million, Cybersecurity: In an ever-evolving digital threat landscape, cybersecurity remains a perennial priority for enterprises. San Francisco-based cybersecurity provider Horizon3 announced a robust $250 million Series E round, led by NightDragon and New Enterprise Associates. This financing round set a valuation of more than $2 billion, tripling the company’s valuation from its Series D just last year. This remarkable growth underscores the critical need for sophisticated cybersecurity solutions that can adapt to new threats. Horizon3 likely specializes in advanced threat detection, automated vulnerability management, or proactive defense strategies, providing enterprises with the tools to identify and neutralize cyber risks before they can cause significant damage. The rapid increase in valuation reflects strong market adoption and investor confidence in their ability to deliver effective security in a complex and hostile digital environment.

9. LifeMine Therapeutics, $188 Million, Biotech: The biotechnology sector continued its relentless pursuit of medical innovation, with Watertown, Massachusetts-based drug discovery startup LifeMine Therapeutics securing $188 million in Series E funding. This round was led by Milky Way Investments and is earmarked for advancing the clinical development of its lead program, as well as progressing its pipeline of transplantation and immunology therapies. LifeMine Therapeutics is likely at the forefront of leveraging novel biological insights or computational approaches to discover and develop new drug candidates. The substantial investment indicates confidence in their scientific platform and the potential for their therapeutic candidates to address significant unmet medical needs in areas like autoimmune diseases, organ transplant rejection, or other complex immunological conditions, promising a future of improved patient outcomes.

10. HappyRobot, $150 Million, Agentic AI: Rounding out the top 10 is HappyRobot, a developer of an agentic AI platform tailored for enterprises across diverse sectors, including logistics, financial services, utilities, and manufacturing. The company raised $150 million in Series C funding, led by Prysm Capital and Eurazeo. Agentic AI represents a significant leap forward in AI capabilities, moving beyond task automation to systems that can understand, reason, plan, and execute complex goals autonomously or semi-autonomously. HappyRobot’s platform aims to empower businesses to automate intricate processes, make data-driven decisions, and improve operational efficiency across their value chains. This investment highlights the growing enterprise demand for sophisticated AI solutions that can deliver tangible business value and transform operational paradigms.

The cumulative effect of these funding rounds paints a vivid picture of the venture capital landscape in 2026. The emphasis on high-capital-intensive sectors like advanced manufacturing, energy, and AI infrastructure reflects a strategic long-term vision from investors, moving beyond purely software-driven models to encompass the physical infrastructure and foundational technologies necessary for future economic growth and societal well-being. The geographic concentration, predominantly in California and Texas, continues to showcase these regions as hubs of innovation, though the global nature of the challenges addressed by these companies means their impact will extend far beyond their immediate locales.

This week’s activity is a clear indicator that despite any broader economic uncertainties, venture capitalists are willing to deploy significant resources into companies that demonstrate strong potential for disruption, scalability, and addressing critical market needs. The continued influx of capital into diverse sectors—from the deep tech of nuclear power and advanced manufacturing to the consumer engagement of live shopping and the intricate science of biotech—underscores a diversified yet focused investment strategy. These megadeals are not just financial transactions; they are votes of confidence in the teams, technologies, and visions that are actively shaping the future, demonstrating that 2026 is indeed a year for "Big Checks" and even bigger aspirations.

We tracked the largest announced rounds in the Crunchbase database that were raised by U.S.-based companies for the period of Aug. 1-7, 2026. Although most announced rounds are represented in the database, there could be a small time lag as some rounds are reported late in the week.

Stay up to date with recent funding rounds, acquisitions, and more with the Crunchbase Daily.