ASML Holding N.V. (ASML) vs Berkshire Hathaway Inc. (BRK-A)

ASML Holding NV is the global leader in semiconductor lithography systems, with an estimated 90% market share. Lithography is the process of using a light source to project circuit patterns from a photomask onto a semiconductor wafer. This technology enables chipmakers to pack more transistors into the same silicon area, and it has historically accounted for a significant share of the cost of producing leading-edge chips. ASML outsources the production of most components and primarily operates as an assembler. Its largest customers include TSMC, Samsung, Intel, SK Hynix, and Micron.