Kospi jumps 3.1% to 5,638.34 as chip stocks rise and Anthropic files for listing
Key Facts
South Korea’s Kospi closed up 3.1% at 5,638.34 on October 27, with SK Hynix shares rising 5.2% and Samsung Electronics shares gaining 4.2%, according to The Associated Press. The gains came as Asian markets tracked a rally in U.S. technology and artificial intelligence stocks. The index had jumped more than 4% during the session before paring some of its gains by the close. U.S. stocks also advanced in Monday’s session, with the S&P 500 up 0.7%, the Dow Jones 0.3% and the Nasdaq 0.8%. The two Korean stocks rose as Anthropic filed a registration statement that sets the stage for a potential U.S. public offering.
Anthropic filed an S-1 registration statement with the U.S. Securities and Exchange Commission on October 26, 2026, according to SEC records. The filing says the proposed Class A shares will be listed on the Nasdaq Global Select Market under the ticker ANT. However, a public sale is conditional on the registration statement becoming effective, and the filing itself does not provide a final date for trading to begin. The filing says the proposed sale will begin “as soon as practicable after the registration statement becomes effective.” The filing puts the company on a path toward a public offering, while the next step depends on completing the registration process.
Figures cited in Associated Press coverage show how quickly the company’s business is expanding, with revenue exceeding 16 billion dollars in the first half of 2026. That was 14 times revenue in the same period a year earlier, the news agency reported. But sales growth came alongside a net loss of 80.7 billion dollars in the first half of 2026. The loss included a one-time accounting adjustment of 72.4 billion dollars related to financing agreements, according to the report. Anthropic recorded a loss of 13 billion dollars in the first half of 2025, underscoring the widening gap between accelerating revenue and the accounting costs recorded in the more recent period.
The company’s filing also touches on the high-bandwidth memory market, whose products are used in AI accelerators. It names SK hynix, Samsung Electronics and Micron Technology among the leading producers of this memory. The filing also warns that the company cannot guarantee suppliers will be able to provide the required quantities quickly enough. Anthropic said these components are “largely manufactured” by the three companies, pointing to concentrated production among a limited number of suppliers. The disclosure places supply considerations alongside growing demand for computing, as the two Korean memory makers lead gains in their market during the session.
After the stock gains, attention is turning to results from Korean companies, starting with SK Hynix. The company said it will announce third-quarter results before 9:00 a.m. on October 28 Seoul time, then hold a conference call at 9:00 a.m. Samsung Electronics is scheduled to report results the following day, according to The Associated Press. In its preliminary guidance for the third quarter of 2026, Samsung estimated sales of about 195 trillion won and operating profit of about 107.40 trillion won. Those figures compare with sales of 86.06 trillion won and operating profit of 12.17 trillion won in the third quarter of 2025, according to Samsung Global Newsroom.