KOSPI surges 2.1% as Samsung, SK hynix rebound on Anthropic chip deal reports
Synopsis
Seoul's stock market staged a sharp 2.11% rebound on 3 July after reports emerged that AI startup Anthropic is in talks with Samsung Electronics to build a custom AI chip — reversing the previous session's 7.89% crash. Meanwhile, South Korea's FDI pledges jumped 9.1% to $14.28 billion in the first half of 2026, with actual inflows surging 42.6%, pointing to deepening global confidence in Korean tech.
Key Takeaways
The KOSPI rose 163.52 points (2.11%) to 7,809.61 as of 11:20 am on 3 July 2026 , recovering from a 7.89% plunge the previous session.
Samsung Electronics surged 6.12% and SK hynix gained 3.02% after reports that Anthropic is in talks with Samsung to develop a custom AI chip.
The Philadelphia Semiconductor Index fell 5.4% overnight, extending its decline for a second straight session.
The Korean won strengthened to 1,539.15 per US dollar , up 16.65 won from the prior session.
South Korea's FDI pledges rose 9.1% year-on-year to $14.28 billion in H1 2026 ; actual inflows surged 42.6% to $10.73 billion .
The Korea Composite Stock Price Index (KOSPI) climbed 163.52 points, or 2.11 percent, to 7,809.61 as of 11:20 am local time on Friday, 3 July 2026, as investors moved to buy beaten-down semiconductor stocks following the previous session's steep losses. The rebound came in choppy trading, with the index opening 1.2 percent higher before extending gains through the morning.
What Triggered the Recovery
The primary catalyst was a report that AI startup Anthropic is in talks with Samsung Electronics to co-develop a custom artificial intelligence chip. The news revived appetite for South Korean semiconductor names after a bruising prior session that had seen the KOSPI plunge 7.89 percent — one of its sharpest single-day falls in recent memory — dragged by a heavy sell-off in Samsung Electronics and SK hynix.
Tech Heavyweights Lead the Charge
Samsung Electronics advanced 6.12 percent, recovering a portion of the previous day's losses. Chip giant SK hynix rose 3.02 percent. Not all tech names participated in the rally, however: AI investment firm SK Square slipped 0.79 percent, while battery maker LG Energy Solution edged up a modest 0.28 percent.
Global Cues: Wall Street Mixed, Philadelphia Semi Index Slides
Overnight, the Dow Jones Industrial Average rose more than 1 percent to a record high after weaker-than-expected June jobs data from the United States eased concerns over a near-term interest rate hike. The tech-heavy Nasdaq, however, fell 0.8 percent, weighed by another sharp sell-off in semiconductor stocks. The Philadelphia Semiconductor Index tumbled 5.4 percent, extending its decline for a second consecutive session — a signal that the global chip sector remains under pressure even as Seoul bargain hunters stepped in.
Won Strengthens, FDI Pledges Hit $14.28 Billion
The Korean won strengthened on Friday, trading at 1,539.15 won per US dollar as of 11:20 am, up 16.65 won from the previous session. Separately, data released on Friday showed that foreign direct investment (FDI) pledges to South Korea rose 9.1 percent year-on-year in the January–June 2026 period, reaching US$14.28 billion, up from $13 billion a year earlier, according to the Ministry of Trade, Industry and Resources. Notably, the amount of investment that actually arrived in the country surged 42.6 percent to $10.73 billion — suggesting that earlier pledges are translating into real capital inflows at an accelerating pace.
What to Watch Next
The durability of Friday's rebound will depend on whether the Anthropic–Samsung chip collaboration advances beyond preliminary talks, and on the trajectory of the Philadelphia Semiconductor Index, which remains a key barometer for global chip sentiment. Any further softening in US macro data could renew pressure on export-oriented Korean tech names. The strong FDI numbers, however, offer a broader structural cushion for South Korean equities heading into the second half of 2026.
Point of View
But a single unconfirmed deal report reversing a near-8% crash underscores how sentiment-driven Korean chip stocks have become. The Anthropic–Samsung talks are preliminary, and the Philadelphia Semiconductor Index's continued slide is a reminder that the structural headwinds facing the global chip sector have not eased. The FDI data is the more durable positive story — a 42.6% jump in actual inflows signals real conviction, not just pledges. If that capital lands in advanced manufacturing, it could reduce South Korea's vulnerability to the kind of one-day panic sells that defined this week.
NationPress
3 Jul 2026
Frequently Asked Questions
Why did the KOSPI rise on 3 July 2026?
The KOSPI climbed 2.11% to 7,809.61 as investors bought semiconductor stocks at lower prices following the previous session's 7.89% crash. The rebound was fuelled primarily by reports that AI startup Anthropic is in talks with Samsung Electronics to co-develop a custom AI chip.
What is the Anthropic–Samsung chip deal about?
According to reports, AI startup Anthropic is in preliminary discussions with Samsung Electronics to develop a custom artificial intelligence chip. No deal has been confirmed, but the news was enough to lift Samsung shares by 6.12% on Friday morning.
How much did South Korea receive in FDI in the first half of 2026?
South Korea received $14.28 billion in FDI pledges in the January–June 2026 period, up 9.1% year-on-year from $13 billion, according to the Ministry of Trade, Industry and Resources. The amount of investment that actually arrived surged 42.6% to $10.73 billion.
How did global markets affect South Korean stocks?
The Dow Jones Industrial Average rose more than 1% overnight to a record high after soft US jobs data eased rate-hike fears, providing a positive backdrop. However, the Nasdaq fell 0.8% and the Philadelphia Semiconductor Index tumbled 5.4% for a second straight session, capping gains in Korean chip names.
Which stocks led the KOSPI recovery on 3 July?
Samsung Electronics led with a 6.12% gain, followed by SK hynix at 3.02%. SK Square slipped 0.79% and LG Energy Solution edged up 0.28%, making the rally narrowly concentrated in the semiconductor segment.
