Korea's AI super investment plan reinforces the long-cycle memory capacity expansion thesis

Overview

This report comments on the super investment plans of the Korean government, Samsung Group, and SK Group around AI, semiconductors, and data centers, and assesses recent developments in memory industry pricing, customer procurement, potential litigation, and supply-demand disputes. The core conclusion is that the investment commitments from the Korean government and the two major groups show their intention to maintain leadership in AI semiconductors and memory, while expanding value-chain capabilities through AI data centers, robotics, HBM back-end packaging, and next-generation manufacturing bases.

Core views

J.P. Morgan believes that the roughly US$3.1T long-term investment plan spans a long period, and actual capacity deployment will still depend on the memory industry's supply-demand cycle; however, the investment scale and government backing send a clear long-term growth strategy signal. The report emphasizes two key words: "shortage" and "competition." Memory executives have repeatedly stated that supply can meet only half of demand and may worsen in the future; statements from Samsung and SK reflect an intention to ease supply bottlenecks, meet customer demand, and maintain Korea's leadership in memory. In the short term, accelerated capex may be interpreted by the market as positive or negative depending on the stage of the cycle; over the medium to long term, the report believes Korean memory stocks offer more attractive risk-reward, while semiconductor equipment, power infrastructure, and semiconductor EPC suppliers are more direct beneficiaries.

Analysis framework

The report combines event commentary with supply-demand analysis across the value chain: it first breaks down the disclosed investment amounts, regions, and business directions of the Korean government, Samsung Group, and SK Group, and then assesses market impact from the angles of memory industry supply and demand, capex pacing, AI data center demand, customer procurement conflicts, pricing litigation risk, and historical DRAM antitrust cases.

Methodology notes

• Industry cycleMemory supply-demand cycle analysis

  Supply-demand gap and capex pacing

  The report believes execution of memory capacity expansion will be constrained by the industry's supply-demand cycle; in the early to middle part of the cycle, faster capex can be viewed as a positive signal of strong demand, while in the later or peak stage it may trigger concerns about oversupply.

• Capex breakdownBreakdown of front-end, infrastructure, and back-end investment

  Allocation of investment use

  J.P. Morgan estimates that of the roughly US$3.1T long-term investment, 60%-70% will flow to front-end wafer equipment, 20%-30% to infrastructure and cleanrooms, and the remainder to back-end packaging facilities.

• Earnings opportunity estimationInferring revenue opportunity from capital intensity

  Estimating revenue opportunity using 15%-25% capital intensity

  The report uses 15%-25% capital intensity to translate the roughly US$3T investment into about US$12T-20T of cumulative revenue opportunity, and compares this with the roughly US$1.2T of cumulative revenue generated by Korean memory makers over the past 20 years.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• SK Inc (034730.KS)

  One of the semiconductor EPC/AI infrastructure operations-related names specifically favored in the report

  Strengths

  Linked to SK Group's memory capacity expansion and AI infrastructure investment, with the group planning W2,100T of investment, including W1,100T for memory and W1,000T for AI infrastructure.

  Weaknesses

  Affected by the memory cycle, the pace of AI data center construction, and the execution of group capex.

  Comparison

  Compared with pure memory manufacturers, SK Inc's benefit thesis is more tied to semiconductor EPC and infrastructure operations.

  Risks

  Delays in capacity expansion, weaker-than-expected demand for AI infrastructure, and capex at the top of the cycle being interpreted negatively by the market.

• Samsung C&T (028260.KS)

  One of the semiconductor EPC operations-related names specifically favored in the report

  Strengths

  Samsung Group's large-scale investments in semiconductors, displays, AI data centers, and green energy/power facilities may generate engineering and infrastructure demand.

  Weaknesses

  Earnings realization depends on actual project starts, order allocation, and construction cycles within the group.

  Comparison

  Relative to Samsung Electronics, Samsung C&T is more exposed to the engineering, procurement, construction, and infrastructure chain.

  Risks

  Project execution delays, rising construction costs, and changes in policy support or funding arrangements.

• Samsung Electronics

  Core execution entity for Samsung Group's semiconductor investments

  Strengths

  Plans to invest W2,450T during 2026-2040, including W2,100T in semiconductors, while expanding in Yongin, HBM back-end, and next-generation displays.

  Weaknesses

  Large-scale capex may intensify market concerns about future supply expansion.

  Comparison

  Similar to SK Group, its investment goals are aimed at maintaining leadership in AI semiconductors and easing memory supply bottlenecks.

  Risks

  Falling memory prices, resistance from customer procurement, and antitrust or pricing litigation risk.

• SK Group / SK hynix

  Key investor in memory capacity expansion and AI infrastructure

  Strengths

  W1,100T of memory investment and W1,000T of AI infrastructure investment strengthen AI factory and memory supply capabilities.

  Weaknesses

  Construction cycles are long, and the 2033 and 2035 targets carry execution uncertainty.

  Comparison

  SK places greater emphasis on the shift of AI factories and data centers from storage toward a token-generation role.

  Risks

  Uncertainty around AI infrastructure utilization, power supply, and capex returns.

• Semiconductor equipment suppliers

  A part of the value chain that J.P. Morgan believes will benefit positively over the long term

  Strengths

  An estimated 60%-70% of the roughly US$3.1T investment is expected to flow to front-end wafer equipment.

  Weaknesses

  Order realization depends on specific fab timelines and the industry's supply-demand cycle.

  Comparison

  Compared with memory manufacturers, equipment suppliers have higher direct elasticity to expansion budgets.

  Risks

  Expansion delays, localization of equipment procurement or intensified competition, and order volatility at the top of the cycle.

• Power infrastructure suppliers

  Supporting beneficiaries of AI data centers and large fab construction

  Strengths

  Korea's AI data center plans involve multi-stage GW-scale construction, driving strong demand for power, green energy, and supporting facilities.

  Weaknesses

  Constrained by grid access, permits, energy prices, and project approvals.

  Comparison

  Compared with traditional semiconductor components, power infrastructure is more directly driven by GW-scale expansion in AI data centers.

  Risks

  Power bottlenecks, delays in regulatory approvals, and rising capital costs.

• Consumer electronics brands

  Downstream parties under pressure from rising memory prices

  Strengths

  They can attempt to diversify procurement, including seeking Chinese DRAM supply.

  Weaknesses

  The report believes additional supply still remains significantly below demand, creating uncertainty around securing sufficient memory.

  Comparison

  Compared with server and AI computing customers, consumer electronics brands are more easily squeezed by rising BOM costs.

  Risks

  Memory price increases, insufficient supply, and escalating profit-allocation conflicts with suppliers.

Key data

• Total size of Korea's long-term investmentAbout W4,755T, or roughly US$3.1TJ.P. Morgan's combined measure of the relevant long-term investment plans of Samsung Group and SK Group.
• Three major growth pillars of the Korean governmentSemiconductors, AI robotics/physical AI, AI data centersMOTIR announced the "three major project plans" and proposed the 3S+1F semiconductor growth strategy.
• Memory capacity targetMemory capacity to double within the next five yearsExpected by MOTIR, which also plans to move forward the ramp-up timeline for the Yongin advanced wafer fab from 2045-2047 to 2033-2040.
• Samsung Group investmentW2,655T; of which Samsung Electronics will invest W2,450T during 2026-2040, including W2,100T in semiconductorsIncludes the Yongin fab cluster, existing semiconductor fabs, a potential manufacturing hub in Gwangju, HBM back-end packaging in Cheonan/Onyang, next-generation display in Asan, and physical AI/humanoid robot production lines in Gumi.
• SK Group investmentW2,100TOf this, W1,100T is for memory and W1,000T for AI infrastructure; the AI infrastructure target is about 15GW by 2035.
• Samsung-related HBM back-end investmentW56TDirected to HBM back-end packaging lines in Cheonan/Onyang.
• Breakdown of SK memory investmentYongin W600T, Cheongju NAND W100T, next semiconductor cluster W400TSK plans to move the Yongin ramp-up timeline forward from 2045 to 2033.
• J.P. Morgan estimate of investment use60%-70% front-end wafer equipment; 20%-30% infrastructure and cleanrooms; the rest back-end packagingAllocation of use corresponding to the roughly US$3.1T long-term plan.
• Implication for capacity scaleMore than a dozen wafer fabs of roughly 400k WSPM; about 2x current installed DRAM WSPM capacityThe report believes the pace of new DRAM capacity construction after the turning point in the late 2020s could be significantly faster than in the past.
• Potential revenue opportunityAbout US$12T-20TDerived from the roughly US$3T investment based on 15%-25% capital intensity; compared with about US$1.2T in cumulative revenue for Korean memory makers from 2006-2025.
• Companies and ratingsSK Inc (034730.KS/W799,000/OW); Samsung C&T (028260.KS/W478,500/OW)The report lists prices as of the close on 2026-06-29.
• Industry sentiment eventA dispute emerged between Apple and MU over sharp near-term price increasesThe report believes this reflects market concerns that the current profit allocation favoring memory makers is unsustainable.
• Legal risk eventU.S. consumers filed a class action lawsuit against the three major DRAM manufacturersAlleging potential collusion and price manipulation; the report emphasizes that there is currently no government investigation involved, but it should continue to be monitored.

Impact & implications

In investment terms, the report is more constructive on semiconductor equipment, power infrastructure, and semiconductor EPC suppliers that are directly driven by capacity expansion, and specifically highlights SK Inc and Samsung C&T from the perspective of semiconductor EPC operations. For memory manufacturers, the market may react negatively in the short term due to concerns over accelerated capex, supply expansion, pricing sustainability, and customer pushback; but over the medium to long term, if demand for AI computing, servers, and LPDDR continues to exceed expectations, tight supply-demand conditions and larger revenue opportunities may support improved risk-reward.

Risks

• The long-term investment plan extends to 2033E, 2035E, and 2040E, and the specific implementation timeline remains unclear.
• The memory industry is highly cyclical, and accelerated capex in the middle to late stage of the cycle may be viewed by the market as a future oversupply risk.
• Rapid memory price increases have triggered customer dissatisfaction, and the Apple-MU dispute shows the market is questioning the sustainability of profit allocation.
• U.S. consumers have already filed a class action lawsuit against the three major DRAM manufacturers; although no government investigation is currently involved, any escalation would increase legal and reputational risk.
• Construction of AI data centers and wafer fabs depends on power, cleanrooms, land, approvals, and supporting infrastructure, making execution highly complex.
• The willingness of Chinese DRAM makers to expand capacity may introduce a competitive variable, although the report believes additional supply may still remain below demand.
• The report includes disclosures regarding investment banking business, market making, client relationships, and potential conflicts of interest, and investors should make independent judgments in light of these disclosures.

What to watch

• Whether Samsung and SK provide more specific fab phases, investment timelines, and capacity plans in the upcoming earnings season and company events.
• Whether the ramp-up of the Yongin advanced wafer fab proceeds according to the accelerated 2033-2040 timeframe.
• The power and funding arrangements for SK's 15GW AI infrastructure target and Korea's GW-scale AI data center construction.
• Supply-demand and pricing trends for HBM back-end packaging, NAND, and LPDDR in 2H26E-2027E.
• Whether the Apple-MU pricing dispute spreads to more consumer electronics customers and procurement strategies.
• Whether the U.S. DRAM class action lawsuit leads to a government investigation, settlement, or stronger regulatory action.
• Changes in orders, revenue recognition, and margins for semiconductor equipment, power infrastructure, and semiconductor EPC suppliers.