SEOUL, June 29, 2026, 17:07 (KST)
- South Korea’s official chip production plan stands at 800 trillion won ($518.3 billion), which is roughly 40% of the 2,000 trillion won group-level number reported before the briefing.
- Samsung Electronics KRX:005930 and SK Hynix KRX:000660 plan to set up two big fab sites each in the southwest. The government is also looking to see another 81 trillion won spent on a new packaging cluster.
- Samsung dropped 4.86% and SK Hynix slid 1.68% in Seoul trading, with overseas investors net sellers of 7.73 trillion won in Korean equities.
- Semiconductors accounted for 41.2% of South Korea’s exports in the first 20 days of June, with chip shipments up 188.4%.
South Korea put a number on its AI-chip plan: 800 trillion won from Samsung Electronics Co KRX:005930, SK Hynix Inc KRX:000660 and suppliers to build four new fab sites in the southwest. That’s still a big wager, but well below the $1.3 trillion headline that moved memory shares ahead of the announcement. The figure is also less than the earlier 2,000 trillion won group total floated before Monday’s presidential briefing.
The gap matters since shareholders pay for capacity with cash, not just headlines. The fab pledge is where memory supply, equipment orders and later depreciation show up. The larger numbers include data centers, physical AI projects and plans from conglomerates that might fall outside listed memory or could run through the next chip cycle.
| Scope | Amount | Confirmed detail | Investor read-through |
|---|---|---|---|
| Pre-event total group guide | Up to 2,000 trillion won / $1.3 trillion | Korea Economic Daily via Bloomberg/Fortune, 10-year span | Too wide for a direct line to memory capex numbers |
| Official fab ecosystem | 800 trillion won / $518.3 billion | Includes Samsung, SK Hynix, suppliers; each has two fabs in the southwest | This is the main DRAM/HBM supply risk figure |
| Packaging cluster | 81 trillion won | Chungcheong region, closer to Seoul | HBM stacking and advanced packaging angle is here |
| Local government support | 5 trillion–20 trillion won | Gwangju and South Jeolla | Shows infrastructure hurdles with power, water, land |
| SK separate plan | 1,100 trillion won by 2035 | Yonhap details SK Hynix’s new cluster, 400 trillion won southwest | Use as group guide until filings confirm schedule |
Samsung dropped 4.86% to 323,000 won, while SK Hynix slipped 1.68% to 2.62 million won as the KOSPI closed down 0.2% at 8,394.65. Foreign investors sold a net 7.73 trillion won worth of stocks. The moves came even though traders didn’t get a clear sign of stronger demand.
Lee Kyoung-min, analyst at Daishin Securities, said the AI infrastructure plan is a long-term boost for semiconductors, but the move provides “only limited support for chip stocks” because price worries continue to hang over the sector. Yonhap News Agency
| Market gauge | Latest reading | Why it matters |
|---|---|---|
| KOSPI close | 8,394.65, down 0.2% | Policy headlines could not shake off pressure on tech |
| Samsung Electronics | 323,000 won, down 4.86% | Capex debate kept weighing on the stock |
| SK Hynix | 2.62 million won, down 1.68% | Smaller drop but the new plan didn’t reverse the move |
| Foreign net flow | -7.73 trillion won | Foreign investors sold into the end of the session |
| KOSPI turnover | 42.26 trillion won | Trading volume picked up with Korea in focus |
| June 1-20 chip exports | +188.4% y/y | Big jump helps explain the policy push on capacity |
| Chip share of exports | 41.2% | Korea’s export story relies on memory chips |
Samsung Chairman Jay Y. Lee called Gwangju the candidate site with “the greatest potential” due to power, water, labor and state support, Aju Press wrote. Lee also said Samsung’s high-bandwidth memory spending will center on Cheonan and Onyang, where it’s adding advanced packaging. Aju Press
SK Group Chairman Chey Tae-won told investors that supply is set to lag demand. “Demand will continue to outstrip supply,” he said, Aju Press reported. Chey pitched an initial 5 gigawatts of AI data centers, expanding later to 10 gigawatts. Aju Press
Execution is the hurdle. Chey told the event that “a chip factory requires massive land, power, water and talent,” Reuters said. He added it took SK nine years to get its Yongin cluster done. Reuters
South Korea’s macro story is holding up. A Reuters poll found exports likely jumped 61.0% in June, the fastest since October 1978, mainly on chip demand. An Ki-tae, economist at NH Investment & Securities, said memory chip exports will probably stay strong. Park Sang-hyun at iM Securities pointed to more support for non-chip shipments from a global rebound and cheaper oil.
The next market moves aren’t about ceremony numbers. Investors are watching Samsung and SK Hynix capex schedules, permits, utility deals and tool orders linked to the four southwest fabs.
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