Substrate (Founders Fund)

Thesis

Substrate is developing X-ray lithography as an alternative to ASML's EUV lithography monopoly. The company raised $100M at a $1B valuation with backing from Founders Fund. One of Peter Thiel's highest-conviction frontier bets for 2025-2026. ASML's monopoly on EUV lithography equipment is one of the most critical single points of failure in the global semiconductor supply chain. A single company in the Netherlands controls the production of machines that cost $380M+ each and are essential for manufacturing advanced chips. Any viable alternative would have enormous strategic and commercial value. X-ray lithography has been researched for decades but never commercialized due to technical challenges (mask proximity, alignment precision, source intensity). Substrate presumably believes it has solved or can solve these issues. The $100M raise and Founders Fund backing suggest genuine technical progress. However, this is an extremely long-shot bet. ASML has spent decades and tens of billions perfecting EUV, and semiconductor lithography is one of the most technically demanding manufacturing processes ever created. The company is private with no public investment route, and the technology is pre-commercial.

Catalysts

• +$100M raised at $1B valuation with Founders Fund backing
• +Challenging ASML's EUV monopoly. One of the most critical supply chain bottlenecks
• +X-ray lithography could leapfrog EUV for next-generation chip manufacturing

Risks

• -ASML has decades and tens of billions of dollars head start in lithography
• -X-ray lithography has been researched for decades without commercialization
• -Private company with no public investment route. Pre-commercial technology

Common questions