South Korea Stock Market Volatility Amid Iran Conflict

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  • March 5, 2026 at 10:42 PM ET
  • Est. Read: 2 Mins
South Korea Stock Market Volatility Amid Iran ConflictAI-generated illustration — does not depict real events

Key Takeaways

South Korea's stock market experienced significant volatility due to concerns over the escalating Iran conflict and its potential impact on semiconductor supply chains and energy costs. Key takeaways:

  • South Korean stocks plunged over 12% on Wednesday, marking the steepest one-day decline since September 2001.
  • The KOSPI index rebounded nearly 10% on Thursday, driven by a reversal of leveraged selling and stabilization in oil prices.
  • Semiconductor companies like Samsung Electronics and SK Hynix are particularly vulnerable due to their reliance on materials sourced from the Middle East.
  • The conflict has raised concerns about higher energy costs and potential disruptions in semiconductor production.

The South Korean stock market experienced significant volatility this week amid escalating tensions in the Iran conflict. According to multiple reports, the benchmark Korea Composite Stock Price Index (KOSPI) tumbled more than 12% on Wednesday, marking its steepest one-day decline since September 2001.

The sharp drop was driven by mounting concerns over the economic fallout from the escalating Middle East conflict. South Korean stocks rebounded nearly 10% on Thursday, snapping a three-session losing streak and marking the largest daily gain in terms of points in KOSPI history.

According to UPI, individual investors drove the steep rally, scooping up a net 1.79 trillion won, while foreigners and institutions sold a net 144.6 billion won and 1.7 trillion won, respectively.

The conflict has raised concerns about higher energy costs and potential disruptions in semiconductor production. South Korea's chip industry supplies around two-thirds of global memory chips and relies heavily on the Middle East for key materials like helium, bromine, and chip inspection equipment.

According to TimesLive, Samsung Electronics and SK Hynix have assured that they have secured diverse supply chains and sufficient inventory of critical materials. However, industry experts warn that a prolonged conflict could deal a setback to plans by big tech firms to build AI data centers in the Middle East.

The volatility in South Korea's stock market highlights its sensitivity to geopolitical risks and energy price fluctuations. As reported by CNBC, the KOSPI index is heavily concentrated in a few technology stocks, which amplifies market moves relative to more diversified indices.

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