The Aporia · South Korean shares soar after chip stock rout

South Korean shares surged on Friday, with the Kospi index rising nearly 18% driven by chip makers SK Hynix and Samsung Electronics. SK Hynix saw its shares jump almost 30%, while Samsung's shares were up by 28%, after earnings updates from Amazon and Microsoft boosted optimism over artificial intelligence investments. The rally also pushed markets in Japan and Taiwan higher, as investors became more confident in the tech sector. The Kospi index had previously been halted multiple times this year due to volatility, but remains over 50% higher than its value at the end of 2025 despite recent falls.

Written locally by qwen2.5:14b on 2026-08-21, using this article's own text rather than the other coverage of the same event (that is the story summary below).

Story summary

On Friday, the South Korean stock market rebounded with a strong gain, with the benchmark Kospi index closing almost 18% higher. This recovery was driven by the performance of chip makers SK Hynix and Samsung Electronics, which saw their shares increase by almost 30% and 28% respectively. The surge in these companies' stock prices helped to partially reverse a three-day rout that had wiped out hundreds of billions of dollars from the market's value. The turnaround was fueled by optimism over investments in artificial intelligence, following earnings updates from US technology giants Amazon and Microsoft. South Korean regulators have announced measures to curb the recent sell-off, which had been exacerbated by concerns over the massive amounts of money being invested in AI by major tech firms.

Written for “Korean Tech Stock Market Rally” on 2026-10-17, grounded in this article and the 0 other(s) covering the same event.

📰 Korean Tech Stock Market Rally

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Osmond Chia

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- Published Share prices jumped in South Korea on Friday, partly reversing a three-day rout that wiped hundreds of billions of dollars off the value of the country's stock market. asserted

that → publish → market

The benchmark Kospi index closed almost 18% higher, driven by chip makers SK Hynix and Samsung Electronics. asserted

index → close → makers

It came after earnings updates from US technology giants Amazon and Microsoft helped boost optimism over the huge amounts of money being invested in artificial intelligence (AI). asserted

updates → come → intelligence

South Korean regulators have also announced measures aimed at curbing this week's sell-off. asserted

regulators → announce → off

Surging chip stocks also helped push markets in Japan and Taiwan higher. asserted

stocks → surge → Japan

SK Hynix, which is a major supplier to leading AI chip firm Nvidia, saw its shares gain almost 30%, while Samsung was up by 28%. asserted

Samsung → lead → %

Both firms had seen their stock market value slump this week as a sell-off in AI-related stocks deepened. asserted

off → see → stocks

Investors had become concerned over the hundreds of billions of dollars being poured into in AI by big technology firms. asserted

Investors → become → firms

In recent months stock market trading has been particularly volatile in South Korea as it has attracted large numbers of retail investors. asserted

it → attract → investors

South Korea's tech-heavy Kospi has been halted multiple times this year under a stock market mechanism known as a circuit breaker, which is designed to calm panic selling. asserted

which → halt → selling

The index had more than doubled in value this year and despite a series of big falls since hitting a record high in mid-June it is still more than 50% higher than it was at the end of 2025. asserted

it → double → 2025

Shares of AI-related companies rallied after Amazon and Microsoft beat earnings expectations. asserted

Amazon → relate → expectations

On Thursday Amazon jumped by more than 9% in after-hours trading in New York on Thursday, while Microsoft gained more than 15%. asserted

Microsoft → jump → %

South Korean shares soar after chip stock rout

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