Hadrian raises $1.37B Series D at nearly $8B to scale US defence factories

Hadrian, a factory builder and defence manufacturer, has raised $1.37 billion in a Series D round, valuing it just shy of $8 billion. JPMorgan Chase's Strategic Investment Group anchored as co-lead, investing through the firm's Security and Resiliency Initiative.

Backers include WCM Investment Management, Washington Harbour Partners, Valor Equity Partners, 137 Ventures, and Baillie Gifford. The round lands a little over a year after a $260 million Series C.

Hadrian produces precision parts and offers factories-as-a-service for aerospace and defence. It pairs skilled workers with AI, automation, and robotics, run through proprietary software called Opus.

Wars in the Middle East and Eastern Europe have pushed production capacity into the spotlight. US troops overseas are firing interceptors and missiles faster than they are being made at home, though the Pentagon has denied stockpile depletion.

Hadrian has nearly 3 million square feet across four sites and works with the largest arms makers, including Lockheed Martin and RTX, as well as newer players like Anduril Industries. In March 2026, the US Navy said the company would mass-produce submarine components in Alabama for the Virginia-class and Columbia-class programmes.

The company is planning a new headquarters in Los Angeles and an engineering and research-and-development hub in San Francisco.

"We were early," chief executive Chris Power told Axios . "This has been a five-year slog, and only 18 months ago everyone went, 'Oh, God, manufacturing is super important, and we really need to create new American manufacturing jobs fast.'"

At $1.37 billion, this ranks among the very largest US Series D rounds in machine learning, a top-percentile raise across 260 comparable deals. It marks a wager that American reindustrialisation has moved from niche cause to mainstream investment thesis. As Power puts it: "Being able to produce — and have advanced factories — is deterrence."