Atomic Machines Raises $250M Series C+ for AI-Native Micro-Machine Manufacturing

Atomic Machines Secures $250M in Series C+ Funding

Atomic Machines, an Emeryville, California-based deep-tech manufacturing company, has raised $250 million in a Series C+ round. The funding was announced on October 7, 2026, and brings the company additional capital as it works to commercialize its AI-native manufacturing platform.

What Atomic Machines Does

Atomic Machines is building the Matter Compiler, which the company describes as an AI-native system that produces working micro-machines directly from code. These micro-machines are multi-material devices with moving parts and features down to single-digit microns, and the platform produces them with no hard tooling.

The company's first commercial product is PrimeSwitch, a bistable power relay designed for 800-volt DC AI data centers. Future targets cited by the company include in-body micro-robots and chip-integrated cooling.

Leadership

Atomic Machines is led by founder and CEO Jeff Holden. According to the company, Holden joined Amazon as its tenth engineer and helped build Amazon Prime, and later served as the first chief product officer at Uber.

The Round

The Series C+ round totals $250 million USD. The investor list includes:

• XTX Ventures
• The House Fund
• Construct Capital
• KAS Venture Partners
• Gigafund
• Sozo Ventures
• Valor Equity Partners
• Tru Arrow Partners
• OneIM
• Regents of the University of California

No single lead investor was specified in the funding details.

Why It Matters for Acquisition Watchers

Atomic Machines sits at the intersection of deep-tech manufacturing and AI-driven design. Its Matter Compiler proposition — producing multi-material micro-machines from code without hard tooling — targets a manufacturing bottleneck that traditionally requires significant tooling investment and long lead times. The company's initial commercial focus on power relays for 800-volt DC AI data centers places it in the supply chain for high-density compute infrastructure, a segment attracting substantial capital.

The stated roadmap extends beyond data-center components into in-body micro-robots and chip-integrated cooling, both of which would broaden the company's addressable markets if realized.

With $250 million in new capital and a Series C+ designation, Atomic Machines is a late-stage private company with a substantial war chest. For strategic acquirers in manufacturing, semiconductor-adjacent hardware, or data-center infrastructure, the company represents a scaled deep-tech asset with a named first product and an expanded investor base that includes both venture firms and institutional participants.

Summary

• Company: Atomic Machines
• Headquarters: Emeryville, California
• Round: Series C+
• Amount: $250 million USD
• Announced: October 7, 2026
• Lead investor: Not specified
• Core technology: Matter Compiler, an AI-native system for producing micro-machines from code
• First commercial product: PrimeSwitch, a bistable power relay for 800-volt DC AI data centers