Shares of leading chip-equipment manufacturers jumped sharply on Tuesday after South Korea’s government reported that Samsung Electronics and SK Hynix intend to pledge roughly $1.3 trillion toward a major semiconductor expansion. With about an hour remaining in the trading session, KLA Corporation, Applied Materials, Lam Research and ASML were trading at or close to their 52-week highs as investors reacted to the scale of the announced commitments.
KLA Corporation (NASDAQ: KLAC) was the most pronounced mover, trading up 9.28% at $304.23, just shy of its 52-week high of $304.42. Applied Materials (NASDAQ: AMAT) rose 6.02% to $736.46 and had reached a fresh intraday 52-week high of $739.32. Lam Research (NASDAQ: LRCX) gained 5.86% to $435.00, near its 52-week peak of $436.06. ASML Holding (NASDAQ: ASML), the lone producer of extreme ultraviolet lithography systems, traded up 5.33% at $1,983.50 after briefly touching an intraday 52-week high of $1,990.
What was announced
The South Korean government said on Monday that Samsung Electronics and SK Hynix plan to commit more than $500 billion to establish a new chip-making hub in the country’s southwest. The two companies told officials they would each invest about 400 trillion won (roughly $260 billion) in the new hub, with the southwestern city of Gwangju identified as a likely location for Samsung’s new fabs. In addition, an extra 81 trillion won (roughly $53 billion) is expected to be allocated to chip-packaging facilities in the central region.
The program envisions four new memory chip plants in the southwest, a strategic diversification from the companies’ existing production centers, which are currently concentrated in the Seoul region. Samsung Group and SK Hynix stated they expect to invest a cumulative total of more than $2 trillion over the long term connected to these megaprojects. The government has framed these initiatives as part of three megaprojects designed to strengthen capabilities in semiconductors, AI data centers and AI-driven robotics.
Leadership comments and timing
President Lee Jae Myung announced the initiative in a televised address, saying: "We must secure absolute competitiveness in advanced technologies including semiconductors and AI, and make sure the fruits of this growth are distributed evenly nationwide and felt by all citizens." The substantive presentation of investment plans occurred at a meeting on June 29 hosted by the president at the presidential office, where Samsung and SK presented their commitments alongside government ministers responsible for industry, science, climate and land policy.
SK Group chairman Chey Tae-won said that the companies’ existing investments would not be sufficient to meet future demand, adding: "A new manufacturing base is needed to meet the memory shortage that’s expected to continue." He also noted that SK Hynix was accelerating work on new memory factories in Yongin and Cheongju. South Korea’s presidential policy chief Kim Yong-beom had signaled the scale of the announcement ahead of the event in a June 27 YouTube interview, saying that "very unusual figures" would be disclosed.
Why equipment suppliers rallied
The logic for toolmakers is direct: every new fabrication plant requires billions of dollars of process equipment. ASML’s EUV machines are indispensable for cutting-edge logic and DRAM production, positioning ASML as a direct beneficiary of any expansion in leading-edge fabs. Lam Research supplies etch and deposition systems that are central to scaling both NAND and DRAM, while KLA provides process control and inspection tools that are critical at multiple stages of advanced chip production. Applied Materials supplies equipment used across numerous stages of fab construction and production.
Market participants noted that the announced timeline spans a decade or longer, implying sustained order flows for equipment suppliers rather than a short-term capital expenditure spike. Analysts view a prolonged investment horizon as a more durable tailwind for equipment revenue.
Wider market context
The announcement arrives at a time when semiconductors represent a historic share of U.S. equity benchmarks. Chip stocks accounted for a record 19.7% of the S&P 500 as of June 30, a weighting driven in part by AI infrastructure buildout. Commentators described the Samsung and SK commitment as "one of the biggest bets yet on the artificial intelligence boom," noting that the investments reflect rising demand for AI chips, memory and data center infrastructure. Global demand for memory chips is increasing amid a worldwide shortage, with prices rising to record levels.
Outstanding questions for investors
Investors and market analysts are awaiting formal company-level press releases from Samsung Electronics and SK Group that confirm precise investment totals and timelines. Any formal confirmation or upward revision of the pledges could extend the rally among equipment stocks; conversely, if future statements scale back the headline figures, some of the gains seen on Tuesday could reverse quickly.
Beyond headline figures, a central concern for market participants is order book visibility. Street analysts will focus on whether management teams at ASML, KLA, Applied Materials and Lam Research revise capital expenditure guidance upward in upcoming earnings calls in response to the Korean commitments.
Bottom line
The reported commitment by Samsung and SK to pour roughly $1.3 trillion into regional chip-making infrastructure—and to plan for substantially larger, long-term investments—has translated into immediate upside for major equipment suppliers. The scale and multi-year nature of the program suggest a potential multi-year demand tailwind for process tools, but investors will be closely watching formal company confirmations and any subsequent changes to the stated figures.