South Korean stocks trade with sharp swings as investors react to changing expectations around a potential U.S.-Iran diplomatic breakthrough and to volatility in semiconductor shares. On Friday morning, the Korea Composite Stock Price Index (KOSPI) rises after a steep prior-session drop, with investors buying “bargain-priced” chip stocks following heavy selling of bellwether companies such as Samsung Electronics and SK hynix.

Several reports link the market’s earlier surge and broader risk appetite to news from the United States and hopes that hostilities in the Middle East may end soon. In parallel, U.S. market moves—especially shifts in tech stocks—feed into sentiment in Seoul. One source also highlights a specific market development: Korea Exchange (KRX) activates a buy-side “sidecar” tied to KOSPI 200 futures after the index jumps sharply, while program-trading interruptions occur during rapid moves in either direction.

Across outlets, the angles differ between optimism and caution. Some emphasize hopes for an Iran deal and improved Wall Street performance, while others stress profit-taking after a tech-led rally, uncertainty around peace negotiations, and fresh weakness in U.S. semiconductor stocks. Additional factors cited include expectations for AI-chip development involving Samsung and company-specific moves.