July 17, 2026

6 funding rounds announced on this day.

Valar Atomics raises a $1.0B Other roundValar AtomicsWebsiteSource

Valar Atomics is an energy startup based in El Segundo, Calif. which aims to produce low-cost, carbon neutral synthetic fuels by leveraging atomic energy. Valar’s proprietary technology will generate synthetic fuels such as aviation fuel, diesel, and natural gas from atmospheric carbon dioxide and water, using mass-manufactured nuclear reactors as the energy source for the reactions. The company aims to sell its synthetic fuels as drop-in replacements for naturally extracted petroleum at a lower price than conventional products from the oil and gas industry.

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Other
ASP Isotopes raises a $109.0M Other roundASP IsotopesWebsiteSource

ASP Isotopes is an advanced materials company (Nasdaq: ASPI) pioneering next-generation isotope enrichment. Over the past 18 years, our scientists have developed the proprietary Aerodynamic Separation Process (ASP)—a breakthrough technology that enables the enrichment of isotopes that are difficult or impossible to process using traditional methods. Our platform uniquely supports the enrichment of elements across both low and high atomic masses, unlocking capabilities beyond conventional approaches. The applications of ASP are broad and transformative, spanning nuclear energy and advanced reactors to quantum computing and other high-precision technologies.

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Other
Belvedir launches at YC (Summer 2026)BelvedirWebsiteSource

The autonomous private AI platform.

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YC S26
Donkey launches at YC (Summer 2026)DonkeyWebsiteSource

The AI-native trading company: China factory-direct for US importers

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YC S26
Billow AI Labs launches at YC (Summer 2026)Billow AI LabsWebsiteSource

AI-native Accounting & Finance Firm for Regulated Industries

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YC S26
Bizmark launches at YC (Summer 2026)BizmarkWebsiteSource

The operating system built to each company’s reality.

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YC S26