Kospi Rises 1.53% After Nvidia Forecast Boosts Samsung Electronics and SK Hynix Despite Rate Hike

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South Korean shares climbed as Nvidia projected a 70% revenue increase, fueling semiconductor demand optimism. Samsung Electronics rose 1.72% and SK Hynix gained 2.49%, though the Bank of Korea's second consecutive interest rate hike to 3% tempered early gains that briefly pushed the index toward 7,000.

Nvidia Outlook Drives Early Rally in South Korean Stock Market

The Kospi surged in early trading on Thursday, opening at 6,996.12—up 2.76% from the previous session—after Nvidia reported fiscal second-quarter revenue of $96.2 billion, representing a 106% year-over-year increase that exceeded Wall Street estimates

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. The U.S. technology giant forecast a 70% revenue increase for its next fiscal year, signaling continued robust AI computing demand despite warning that memory component shortages could constrain expansion

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. This Nvidia outlook reinforced expectations that AI infrastructure investment and semiconductor demand remain resilient, providing immediate momentum to chipmakers across the South Korean stock market.

Samsung Electronics and SK Hynix Lead Chipmaker Gains

The upbeat AI computing demand forecast delivered substantial gains to South Korean semiconductor stocks. Samsung Electronics climbed 1.72% to 266,000 won, while SK Hynix advanced 2.49% to 1.73 million won by market close

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. Battery manufacturer LG Energy Solution also benefited from the positive market sentiment, rising 3.42%

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. The rally in chipmakers reflects investor confidence that memory component demand will persist as companies continue expanding their artificial intelligence capabilities, positioning South Korean manufacturers as critical suppliers in the global AI supply chain.

Bank of Korea Rate Hike Tempers Afternoon Trading

Source: Korea Times

Source: Korea Times

The Kospi's rally narrowed sharply around 10 a.m. following the Bank of Korea's decision to raise its benchmark interest rate by 25 basis points to 3%, marking the second consecutive interest rate hike as inflation remains above target and financial stability risks persist

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. Despite the monetary tightening, the central bank upgraded its growth forecast for 2026 to 3.3% from the 2.6% projected in July, suggesting confidence in the economy's underlying strength

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. The Kospi ultimately closed at 6,912.37, up 1.53%, falling just short of reclaiming the psychologically significant 7,000 mark

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Foreign and Institutional Investors Drive Market Activity

Foreign and institutional investors demonstrated strong buying interest, with foreign investors purchasing a net 152.4 billion won ($111 million) and institutional investors acquiring 177.6 billion won in shares

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. Retail investors, however, moved in the opposite direction, selling a net 1.91 trillion won as they took profits from the early rally

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. This divergence in investor behavior highlights the tension between short-term trading strategies and longer-term institutional positioning. The Korean won strengthened 0.63% to 1,377.6 per dollar on the onshore settlement platform, while the Kosdaq secondary bourse closed at 837.65, up 1.3%

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Market Outlook Balances AI Growth Against Economic Headwinds

Byun Jun-ho, an analyst at IBK Securities, noted that "Nvidia's strong earnings should ease some of the concerns surrounding the AI and semiconductor industries, but the prospect of a peak in the economic cycle will likely keep investors wary of heightened market volatility"

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. The tug-of-war between AI-driven earnings growth and the trajectory of base interest rates is expected to shape the Kospi's direction in September, with the Korean market likely to remain range-bound amid signs of economic slowdown, the U.S.-China summit, and U.S. midterm elections

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. Treasury bond yields reflected this uncertainty, with the three-year Korean Treasury bond yield rising 3.7 basis points to 3.854% and the benchmark 10-year yield increasing 3.9 basis points to 4.311%

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. Investors will closely monitor Governor Shin Hyun-song's policy guidance for signals about further monetary tightening while assessing whether semiconductor demand can sustain current valuations.

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