EUV lithography is ASML's crown jewel and the most defensible monopoly in the technology sector. No competitor can manufacture EUV systems, which are required for every advanced chip at 5nm and below. The High-NA transition (EUR 350M+ per system, 75% ASP uplift) drives content growth per wafer. The key debate: structural AI supercycle or cyclical equipment peak?
High-NA EUV is the next technology leap -- improving resolution from 13nm to 8nm half-pitch, enabling 2nm chips with fewer multi-patterning steps. At EUR 350M+ per system, it represents a massive ASP uplift. But margins are dilutive until 2029-2030 and throughput is still below standard EUV. The debate: when does High-NA volume inflect, and when do margins normalize?
ASML's EUV monopoly rests on three pillars: proprietary supply chain (Zeiss optics, TRUMPF lasers), accumulated engineering expertise spanning 30+ years, and the sheer technical complexity of 100,000-component systems weighing 180 tons. Canon and Nikon abandoned EUV development. No alternative technology can match EUV throughput. This is a durable monopoly for 15-20+ years.
ASML's three EUV customers -- TSMC, Samsung, Intel -- are all expanding capacity driven by AI chip demand and CHIPS Act funding. TSMC alone is spending $38-42B in FY2025. But customer concentration (only 3 buyers) creates vulnerability: Intel foundry struggles or TSMC capex cuts would hit EUV bookings disproportionately.
ASML's EUR 36B+ backlog provides multi-year visibility, but the market obsesses over quarterly bookings data. The Q3 2024 miss (EUR 2.6B vs EUR 5.6B expected) caused a 16% one-day stock drop, followed by a Q4 recovery to EUR 7.1B. The lesson: ASML's business is inherently lumpy, and any single quarter can mislead. Trailing 12-month bookings remain the better signal.