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KOSPI surges 2.66% on Wall Street rally, foreign buying

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Summary

KOSPI surged in Seoul on Friday, reclaiming the 6,890 level after an overnight Wall Street rally and renewed foreign buying. It closed at 6,894.23, up 178.82 points, or 2.66 percent, after briefly topping 6,900. Semiconductor shares also rose, with Samsung Electronics and SK hynix up 3.4 percent and 6.4 percent, respectively.


Key Facts

  • Foreign investors bought a net 438.8 billion won in equities, while institutional investors bought 1.5 trillion won and retail investors sold 3.59 trillion won.
  • This was the first session of net buying by foreign investors since Sept. 8.
  • KOSDAQ opened at 832.72, briefly reached 833.57, and closed at 827.12, up 4.94 points, or 0.60 percent.
  • The won closed at 1,383.3 won against the U.S. dollar in onshore trading, weakening 1.1 won from the previous session.
By Jun Ji-hye
  • Published Sep 18, 2026 4:47 pm KST
  • Updated Sep 18, 2026 5:24 pm KST
The won-dollar exchange rate and KOSPI closing figure are displayed on an electronic board at Hana Bank’s headquarters in Seoul, Friday. KOSPI closed at 6,894.23, up 178.82 points, or 2.66 percent, from the previous session. Yonhap

The won-dollar exchange rate and KOSPI closing figure are displayed on an electronic board at Hana Bank’s headquarters in Seoul, Friday. KOSPI closed at 6,894.23, up 178.82 points, or 2.66 percent, from the previous session. Yonhap

KOSPI surged more than 2 percent on Friday, reclaiming the 6,890 threshold, driven by an overnight rally on Wall Street and a resurgence in foreign buying.

The main index opened at 6,885.70, up 170.29 points, or 2.54 percent, from the previous close. It briefly climbed to an intraday high of 6,914.08, up 2.96 percent, breaking above the 6,900 level before closing at 6,894.23, up 178.82 points, or 2.66 percent.

Foreign and institutional market participants led the buying spree, scooping up a net 438.8 billion won ($317 million) and 1.5 trillion won in equities, respectively. In contrast, retail investors unloaded a net 3.59 trillion won.

Notably, this marked the first session of net buying by foreign investors since Sept. 8.

The index turned around after holding up relatively well in the previous session, when it fell just 0.04 percent despite the U.S. Federal Reserve’s hawkish rate hike.

Local equities drew significant upward momentum from overnight gains in all three major U.S. stock indexes, supported by retreating U.S. Treasury yields and cooling global crude oil prices.

Market sentiment toward the semiconductor sector was also lifted by optimism following remarks from Nvidia CEO Jensen Huang, who said the firm’s sales could double next year from current annual levels.

Meanwhile, Samsung Electronics and SK hynix closed up 3.4 percent and 6.4 percent, respectively.

"The retreat in 10-year U.S. Treasury yields combined with stabilizing crude oil prices helped reignite risk appetite among investors," said Lee Kyung-min, an analyst at Daishin Securities. "A strong performance in U.S. tech stocks directly translated into a sentiment boost for domestic semiconductor shares."

The tech-heavy Kosdaq index, meanwhile, opened 10.54 points, or 1.28 percent, higher at 832.72 and briefly climbed to 833.57, up 1.39 percent, before paring some of its early gains. It eventually closed at 827.12, up 4.94 points, or 0.60 percent, extending its winning streak to four sessions.

In the Seoul foreign exchange market, the won closed at 1,383.3 won against the U.S. dollar in onshore trading, weakening 1.1 won from the previous session.

Read More

  • Investors turn from dollar to yen for FX bets
  • Won strength limited through year-end as corporate dollar flows fade: State Street
  • Seoul stocks shrug off Fed hike, but won weakens sharply


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