# Samsung and SK hynix see KOSPI weighting fall to 50 percent

*The combined weighting of South Korea's two chipmakers fell to 50.0% of market capitalization, leaving non-tech exporters starved of liquidity as retail capital retreats.*

**Published:** October 25, 2026  
**By:** Dae-hyun Kim  
**Section:** Analysis & Comparison — South Korea  
**Format:** Why It Matters  
**Confidence:** high  
**Source:** https://eastasiabrief.com/analysis/samsung-sk-hynix-see-kospi-weighting-fall-50-percent-922  
**Publisher:** East Asia Brief (https://eastasiabrief.com/)

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## What to know

- Samsung Electronics and SK hynix KOSPI weighting fell to 50.0% on Oct. 24
- Two chipmakers drove 69% of the 2,182 trillion won index market cap decline
- SK hynix reports earnings on Oct. 28, followed by Samsung Electronics on Oct. 29

![Automated equipment processes a semiconductor wafer inside a cleanroom facility as technicians work in the background. (AI-generated image)](https://eastasiabrief.com/media/2026-10-25-17015a8203d0.webp)
*Automated equipment processes a semiconductor wafer inside a cleanroom facility as technicians work in the background. (AI-generated image)*

Samsung Electronics and SK hynix saw their combined weighting on the benchmark KOSPI index fall to 50.0% on Oct. 24, according to Korea Exchange data.

The dip marks a five-point retreat from June 22, when the two semiconductor manufacturers accounted for 55.7% of total market capitalization. That historic peak occurred before global technology hardware spending slowed.

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Cite as: East Asia Brief, "Samsung and SK hynix see KOSPI weighting fall to 50 percent," October 25, 2026. https://eastasiabrief.com/analysis/samsung-sk-hynix-see-kospi-weighting-fall-50-percent-922