# South Korea's KOSPI falls more than 5% as SK Hynix shares slump 10% on earnings outlook cut
> South Korea's KOSPI stock index dropped more than 5 percent in Monday morning trading on July 13 as SK Hynix shares fell around 10 percent following a cut to the chipmaker's earnings outlook; The Asia Business Daily attributed the drop to renewed investor concern about the US-Iran conflict weighing on risk appetite, alongside the earnings revision, after SK Hynix completed a record-setting Nasdaq debut on July 10

**Meta:** type: event · date: 2026-07-13 · heads: Whose Money, The Quiet Shift · 5 takes · 3 lenses · 4 regions

## Summary

South Korea's KOSPI stock index fell more than 5 percent on Monday morning, July 13, with SK Hynix shares dropping around 10 percent after analysts cut the chipmaker's earnings outlook. The Asia Business Daily cited two concurrent drivers: a downward revision to SK Hynix earnings expectations, and renewed investor risk-off behaviour tied to US-Iran war escalation concerns. The selloff came three trading days after SK Hynix completed a record US$26.5 billion Nasdaq dual-listing on July 10, during which its Seoul-listed shares had already eased as capital shifted to the US-listed shares.

## Why it matters

SK Hynix is South Korea's second-largest company by market capitalisation and one of only two makers of high-bandwidth memory (HBM) chips used in Nvidia AI accelerators, making its KOSPI trajectory a proxy for global AI infrastructure confidence. A 5 percent KOSPI drop is a significant single-session move for one of Asia's major indexes. The divergence between the successful Nasdaq listing and the Seoul selloff reflects how geopolitical risk (Iran-war inflation fears) and domestic earnings revision pressure can override sector-level AI demand fundamentals in a single session.

## What to watch

- SK Hynix's own earnings release and guidance, which will confirm or revise the analyst outlook cut.
- KOSPI recovery or continued pressure as the US-Iran situation develops.
- Whether the Nasdaq-listed SK Hynix ADRs hold value even as Seoul shares decline, and whether that arbitrage normalises.

## Regional takes (batched by bias / lens)

### Korean financial daily; sole outlet to identify both the US-Iran war concerns and the earnings outlook cut as dual drivers of the KOSPI sell-off, and to raise the overheating debate
- **The Asia Business Daily** (South Korea, ko) — The Asia Business Daily, Korea's major financial press outlet, attributes the KOSPI correction to two converging factors: renewed concern about US-Iran war escalation depressing risk appetite, and a downward revision to SK Hynix's earnings outlook despite the chipmaker's strong Nasdaq debut. The outlet explicitly raises whether the KOSPI 'overheating debate' will reignite, placing the drop in the context of a market that had rallied sharply on AI-related stocks.
  > "The KOSPI is undergoing a correction amid renewed concerns about the resumption of war between the United States and Iran; SK hynix Earnings Outlook Lowered."
  Source: https://www.asiae.co.kr/en/article/stock-etc/2026071310103520294

### Thai-based international financial news; provides the Southeast Asian investor perspective and frames the SK Hynix KOSPI drop against the backdrop of its recent strong Nasdaq listing and AI demand
- **Kaohoon International** (Thailand, en) — Kaohoon International, covering Asian markets for a Thai and ASEAN investor audience, reports SK Hynix shares diving on Seoul's KOSPI, sparking broader chip-stock losses despite the company's strong recent Nasdaq debut and robust AI memory demand; the ASEAN framing foregrounds the regional portfolio exposure to Korean tech as regional chip stocks fell in sympathy.
  > "SK Hynix shares dive on Seoul's KOSPI, sparking chip stock losses despite strong recent Nasdaq debut and AI demand."
  Source: https://www.kaohooninternational.com/markets/586545

### unlabelled
- **Bloomberg** (Global, en) — 
  Source: https://www.bloomberg.com/news/articles/2026-07-13/sk-hynix-shares-drop-in-seoul-after-much-hyped-us-trading-debut
- **Invezz** (Global, en) — 
  Source: https://invezz.com/news/2026/07/13/heres-why-the-kospi-index-is-in-a-freefall-today-july-13/
- **BSS News (AFP)** (Bangladesh, en) — 
  Source: https://www.bssnews.net/business/405001

## Across the graph
- Related: [[sk-hynix-nasdaq-ipo-jul10]], [[sk-hynix-dossier]], [[ai-semiconductor-selloff-jun23]]
- Entities: Corporate:sk Hynix, South Korea

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