#SKHynixTopsKOSPIByMarketCap SK Hynix leads KOSPI by market cap — SK Hynix tops KOSPI by market cap in 2026, driven by demand for AI and HBM chips. Why it matters: SK Hynix surpassed Samsung in market cap on the KOSPI stock exchange, marking the first change at the top in ~25 years and reflecting the weight of the semiconductor sector in the Korean market. Key data to note:


1) Intraday market cap ~2,080–2,100 trillion won (~1.3 trillion USD),
2) the KOSPI closed at a record ~9,114.55 the same day,
3) Hynix and Samsung already represent more than a quarter each of the index, concentrating a large part of the rally.

The game changer: the AI wave (and HBM boom) revalued memory manufacturers; SK Hynix reached levels that were previously associated only with Samsung and Micron, and investors are now looking at potential ADR listings and related ETFs.
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