This article highlights the ten largest startup funding rounds in the U.S. for the week of June 14-20, 2025, showcasing significant investments across energy, defense technology, and AI-driven software solutions.

Terrapower secured the largest funding round of the week, raising $650 million to advance nuclear energy solutions, backed by prominent investors such as Bill Gates and Nvidia.

In a notable Series F funding round, Applied Intuition raised $600 million, achieving a valuation of $15 billion while providing vehicle intelligence platforms for various sectors, including defense.

Teamworks raised $235 million, which values the company at $1.2 billion, aimed at enhancing its software platform utilized by elite sports teams for management and performance.

Both Ramp and Commure raised $200 million each; Ramp focuses on corporate credit card and expense management, while Commure offers AI-driven services to healthcare systems.

Juniper Square received $130 million for its fund management software, reaching a valuation of $1.1 billion, with over 2,000 funds currently using its services.

Tennr raised $101 million to streamline the referral process for healthcare providers, while Mach Industries secured $100 million to develop unmanned weapon systems for the defense sector.

The article also notes significant global funding, including Berlin-based Helsing, which raised $694 million in a Series D round, marking the largest deal of the week.

The data for these funding announcements was compiled from the Crunchbase database, focusing specifically on U.S.-based companies during the specified week.