South Korea's Samsung Electronics to Build 2nm, 4nm Foundry Fabs on Idle Giheung Site in approximately $18.7 Billion 'KAIROS' Project — BigGo Finance
Samsung Electronics (005930) plans to invest $18.7B-$22.4B in a 'KAIROS' project to build 2nm and 4nm foundry fabs at its Giheung Campus, aiming to meet AI-driven demand for high-bandwidth memory (HBM). The project includes converting some lines into advanced packaging facilities and is expected to boost HBM supply capacity. The investment will also create orders for semiconductor equipment and materials suppliers.
How this was made

The 30-second read
Why it matters
The KAIROS project positions Samsung to capture higher‑margin advanced‑node business, but requires significant capital and equipment procurement.
Market read
The announcement is a primary disclosure of a multi‑billion dollar capex plan, likely influencing Samsung's stock and the broader semiconductor supply chain.
What to watch
Potential supply‑chain constraints for EUV tools and the risk of overcapacity in a slowing AI demand environment.
Background
Samsung Electronics (005930.KS) is a leading global semiconductor manufacturer, currently expanding its foundry capabilities to meet AI‑driven HBM demand.
Ticker impact
Samsung Electronics announced a $18.7‑$22.4 B investment to build 2nm and 4nm foundry fabs at its Giheung campus, the first public disclosure of the KAIROS project.
potential upside as investors price in expanded foundry capacity and equipment orders
The sizable capital outlay and entry into leading‑edge nodes signal growth in Samsung's foundry and HBM business, likely supporting the stock.
Market effects
Boosts outlook for the global semiconductor equipment and materials sector as EUV tool orders rise.
Strengthens South Korean tech sector sentiment and may lift related Korean chipmakers.
Adds competitive pressure on TSMC and Intel in the advanced‑node foundry race.
Counterpoint
The massive capex could strain Samsung's balance sheet and delay returns, weighing on the stock if execution falters.
Key entities
- CompanySamsung Electronics
South Korean semiconductor giant launching the KAIROS fab project.
- SubsidiarySamsung E&A
Handles engineering, procurement and construction for the new fabs.



