---
symbol: "KR200"
name: "KOSPI 200"
date: 2026-08-03
change_pct: -3.625474146536228
direction: "down"
event_type: "earnings"
url: "https://perplo.app/why/KR200/2026-08-03"
updated_at: 2026-08-03T13:06:34.441Z
---

# Why KOSPI 200 (KR200) fell 3.63% on August 3, 2026

KOSPI 200 (KR200) fell 3.63% on August 3, 2026 — Biotech earnings miss weighs on Korea tech.

## What happened

KOSPI 200 fell 3.6%, tracking the broader Korea Tech selloff (peer median -3.3%), as Samsung and SK Hynix—the index's largest anchors—reversed gains from months of HBM/DRAM demand acceleration.

## Why it moved

The index move reflects the chip supply chain retreat and domestic regulatory headwinds (foreign HFT scrutiny, tighter retail curbs) simultaneously pressuring sentiment; the group mechanism — shared DRAM/HBM pricing and…

## Why it matters

Korea Tech rode the global AI capex supercycle for months, with won strength and foreign inflows anchored on Samsung/SK Hynix dominance in memory; now that cycle is repricing lower amid tech-sector rotation, exposing…

## What would break the thesis

Samsung and SK Hynix capex plans and memory pricing guidance will be critical; if either signals demand moderation or oversupply, the index could test lower support.

## Sources

- [Krystal Biotech stock falls 7% on revenue miss despite earnings beat](https://www.investing.com/news/earnings/krystal-biotech-stock-falls-7-on-revenue-miss-despite-earnings-beat-93CH-4830809) — Investing.com
- [Seoul stocks dip over 5% on chip sell-off after record surge](https://www.koreaherald.com/article/10829419) — Korea Herald
- [Foreign high-frequency trading exposes limits of retail curbs](https://www.koreaherald.com/article/10829310) — Korea Herald

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