---
symbol: "SKHX"
name: "SK Hynix"
date: 2026-10-07
change_pct: -3.855693348365273
direction: "down"
event_type: "sector_sympathy"
url: "https://perplo.app/why/SKHX/2026-10-07"
updated_at: 2026-10-07T11:06:40.670Z
---

# Why SK Hynix (SKHX) fell 3.86% on October 7, 2026

SK Hynix (SKHX) fell 3.86% on October 7, 2026 — Trump's 300% tariff threat hits Korea stocks.

## What happened

Trump threatened tariffs up to 300% on Korea, and foreign investors sold W20.3 trillion in Korean stocks, including SK Hynix, as tariff risk and capex uncertainty hit the memory-chip narrative.

## Why it moved

SK Hynix (SKHX) depends on US markets for HBM and DRAM revenue; tariff threats raise input costs, lower demand visibility, and weaken the won, all pressuring margins and growth forecasts.

## Why it matters

Samsung and SK Hynix anchored Korea Tech on AI-chip and HBM tailwinds, but tariff shock exposes export exposure and capex risk, deflating the premium valuation the theme had earned.

## What would break the thesis

If tariffs are delayed or exempted for semiconductors, or if Korea commits to larger US capex, the hit reverses; if tariffs widen and stick, memory demand and pricing face a structural reset.

## Sources

- [Trump threatens tariffs of up to 300% as Korea faces pressure over US investment](https://www.koreaherald.com/article/10892919) — Korea Herald
- [Foreign investors sell W20.3tr in Korean stocks, led by SK hynix and Samsung Electronics](https://www.koreaherald.com/article/10892894) — Korea Herald

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