TSMC

Taiwan Semiconductor Manufacturing Company is the world's largest contract chipmaker and the single most critical node in the AI supply chain. It fabricates the leading-edge chips designed by NVIDIA, AMD, Apple, Broadcom, and Google, and its advanced packaging capacity (CoWoS) is often the true bottleneck on AI accelerator supply. No frontier AI system exists without TSMC's manufacturing.

Founded in 1987 by Morris Chang, TSMC pioneered the pure-play foundry model — manufacturing chips designed by others rather than competing with its customers. That model let fabless designers like NVIDIA and AMD flourish, and decades of process-technology leadership made TSMC the default manufacturer for anything at the leading edge.

In the AI era, TSMC's most advanced nodes (3nm and below) and its chip-on-wafer-on-substrate (CoWoS) advanced packaging are the gating resources for accelerator production. When AI chips are "sold out," the constraint is frequently TSMC's packaging capacity rather than the designers' order books, giving the company extraordinary pricing power and visibility into industry demand.

Geopolitics shadows its dominance: TSMC's concentration in Taiwan makes advanced-chip supply a matter of national security for the US and China alike. The company is building large fabs in Arizona, Japan, and Germany to diversify, backed in part by US and allied government incentives, though the most advanced processes remain anchored in Taiwan.