Key facts
- Samsung Electro-mechanics shares surged 660% in the first half of 2026.
- Kioxia Holdings shares climbed 631% in the first half of 2026.
- Kingboard Laminates shares jumped 535% in the first half of 2026.
- Yageo Corporation shares rose 357% in the first half of 2026.
- Unimicron Technology shares climbed 345% in the first half of 2026.
- These companies supply components like semiconductor substrates, capacitors, memory chips, and printed circuit boards essential for AI hardware.
Japan, South Korea, and Taiwan are emerging as significant beneficiaries of the global AI infrastructure boom, with several companies supplying essential hardware components experiencing substantial stock market gains. These companies, often operating behind the scenes, produce critical parts such as semiconductor substrates, multilayer ceramic capacitors, NAND flash memory, and printed circuit board materials that enable advanced chips to store, process, and communicate data at high speeds.
Despite market volatility influenced by geopolitical tensions and recession fears, investors have poured capital into these manufacturers. This surge in demand for AI components has propelled stock markets in these Asian nations to record highs, outperforming US market gains. Analysts remain optimistic about the semiconductor memory supercycle, with Goldman Sachs predicting strong earnings growth for South Korea and Taiwan through 2027, although they caution about potential volatility driven by retail trading and shifting AI sentiment.
Among the top performers in the first half of 2026 were Samsung Electro-mechanics, whose shares soared 660% due to demand for its semiconductor substrates and capacitors. Japanese memory-chip maker Kioxia Holdings saw its shares climb 631% as AI data centers drove record earnings, making it Japan's most valuable company. Hong Kong-listed Kingboard Laminates jumped 535% by supplying materials for printed circuit boards, while Taiwan's Yageo Corporation rose 357% with its capacitors, resistors, and temperature sensors. Unimicron Technology, also from Taiwan, experienced a 345% stock climb driven by demand for its printed circuit boards and IC substrates used to connect AI processors.