Traditional Memory Supply-Demand Imbalance, DDR4 Price Spike Boosts Profitability

Overview

This report focuses on investment opportunities arising from structural imbalances between supply and demand sides of traditional memory chips in the Greater China region. The report argues that capacity adjustments by international storage chip giants (Micron, SK Hynix) release signals of DDR4 supply contraction, while enterprise market demand for DDR4 (eSSD, data centers) is accelerating recovery. This supply-demand imbalance leads to significant DDR4 price increases, and this trend is expected to persist until 2027-2028. In addition, niche memory chip categories such as SLC NAND (Single Level Cell NAND) and SiCap (Silicon Capacitors) are beginning to penetrate servers and high-end applications, opening new growth space for Greater China memory chip manufacturers like Winbond Electronics and GigaDevice Semiconductor. Based on this judgment, the report upgrades Winbond and Nanya Technology ratings to Overweight, and significantly revises earnings forecasts for all three companies.

Core views

The core logic of the report revolves around supply-demand structure reversal. On the supply side, Micron announced shifting part of its capacity from Taiwan to the US, releasing DDR4 supply in the short term (Q2-Q4). At the same time, SK Hynix's D4/LPD4 capacity at Wuxi is also further shifted to DDR5 backend manufacturing, further compressing DDR4 supply. On the demand side, the report observes that enterprise market DDR4 demand is accelerating, especially order growth from eSSD and data centers is obvious. This contrasts with the sluggish consumer DRAM market, indicating the market structure is changing. Based on the supply-demand model calculation, the DDR4 supply shortage in 2H26 will reach 19-20% (prior expectation only 14%), and the shortage maintains at 18-20% in 2027-2028. Regarding price transmission, the report expects DDR4 prices to rise about 20% in Q3, and predicts this increase will continue during 2027-2028. This is consistent with historical data; current DDR4 8Gb 2666Mbps spot price has soared from $1-2 at the end of 2024 to $27.25 at the end of May 2026 (contract price $13), an increase of over 10 times. SLC NAND and SiCap are new growth points closely watched by the report. Due to their fast read/write speed characteristics, SLC NAND is beginning to be adopted in data center high-performance applications; Greater China suppliers like Winbond, GigaDevice, MegaChip Electronics can all benefit. SiCap as a niche emerging storage product, Winbond's cooperation with SEMCO suggests commercial prospects for this business. From valuation restructuring perspective, the report believes traditional memory chip companies have historically been valued lower due to large performance volatility. However, when supply-demand patterns show long-term structural improvement, and new product lines (SLC NAND, SiCap) provide growth diversification, these enterprises deserve higher valuation multiples. Winbond's P/B multiple should exceed its historical mean of 0.5-1.5x since 2017; GigaDevice's P/E should break through its ten-year mean of 40x.

Analysis framework

The report adopts a multi-layered analytical framework. First, starting from the major industry prosperity cycle, it infers short-term supply-side changes by tracking global memory chip capacity planning and manufacturer announcements (such as Micron's capacity transfer, Hynix's capacity adjustment). Second, through research and order feedback, it evaluates demand-side strength, especially the demand difference between enterprise applications (data centers, eSSD) vs consumer applications. In supply-demand gap calculation, the report established a quarterly DDR4 supply-demand model, classifying supply side by main manufacturers (Samsung, Hynix, Micron, Nanya, Winbond, etc.) and product lines (DDR4, DDR5, Others); demand side by application scenarios (consumer, enterprise, mobile, PC, etc.) and products (low density, medium-high density), dynamically updating shortage predictions. In price transmission and profit derivation, the report verifies the sustainability of price increases through historical price elasticity relationships, spot vs contract price spreads, and ASP changes of mainstream chip models, thereby deriving improvement space for gross margins and operating profits of each company. For Winbond and Nanya Technology, the report revised 2026-2028 EPS forecast increase rates up to 23%-94% and 15%-33%, reflecting this profit improvement expectation. Valuation-wise, the report uses P/B multiple method for Winbond (considering industry high volatility), believing its reasonable P/B multiple corresponding to 2026e BVPS should be 5.5x (vs historical 0.5-1.5x), target price NT$222. For GigaDevice, it uses Residual Income Model, internal assumptions cost of equity capital 8.9%, mid-term growth rate 16.4%, terminal growth rate 3%, deriving 2026e P/E target 46x (slightly higher than ten-year mean 40x), target price Rmb585.

Methodology notes

• Industry/Industrial Analysis FrameworkSupply-demand framework

  DRAM market is a typical supply-constrained cyclical industry; prices are mainly determined by chip capacity utilization and inventory levels. When leading manufacturers voluntarily cut production or shift capacity, supply gaps form quickly, pushing up prices.

  The report quantifies that based on tracking Micron and SK Hynix capacity transfer plans, the DDR4 supply shortage in 2H26 will expand from expected 14% to 19-20%. This expanded shortage directly leads to sustained DDR4 price increases, subsequently improving storage chip manufacturers' gross margins and ROE.

• Company Fundamentals & Financial FrameworkGross Margin Analysis

  Gross margin of storage chip companies is highly sensitive to product ASP (Average Selling Price). When industry price upward cycle arrives, gross margins expand significantly, driving net profit margin and ROE rapid improvement.

  Winbond gross margin rose from 35% in 2025 to 57% in 2026e, then to 58% in 2027e; Nanya Technology gross margin also rebounded to above 50% from lows. This rapid gross margin expansion is the main driver pushing EPS major revisions.

• Valuation MethodPB valuation

  For cyclical industries with highly volatile profits, P/B (Price-to-Book) is more stable than P/E, better reflecting the company's ability to create value long-term. When ROE is at high level, reasonable P/B should rise accordingly.

  Winbond is expected to reach ROE of 85%, 84% and 48% in 2026-2028 respectively, far higher than historical 10-year average level. Under this ROE environment, its P/B multiple rising from historical 0.5-1.5x to 5.5x is reasonable (implied annual Book Yield Rate approx 18%).

• Industry/Industrial Analysis FrameworkPenetration Rate S-Curve

  Adoption of new products or new applications follows S-curve law in the market. Early penetration is slow; after reaching critical point it accelerates, finally saturating. SLC NAND and SiCap applications in data centers are at early acceleration stage.

  The report considers SLC NAND due to its fast read/write characteristics is accelerating penetration in data center high-performance NAND applications. Winbond, GigaDevice manufacturers' SLC NAND sales are expected to rapidly expand from small quantities in 2026, opening differentiated growth paths for them.

• Company Fundamentals & Financial FrameworkROIC–WACC spread

  When enterprise ROIC (Return on Invested Capital) far exceeds WACC (Weighted Average Cost of Capital), it represents the enterprise is creating value. Storage chip manufacturers typically ROIC greatly surpasses WACC during prosperity rise period, but falls below WACC during downswing period.

  Winbond's ROE in 2026e is as high as 85%, ROIC will also rise accordingly to above 40%, far exceeding its cost of equity capital (approx 8-10%), indicating the company has strong value creation power during this period.

• Cycle & Sentiment FrameworkSentiment Pivot Analysis

  Storage chip industry has clear sentiment cycle pivot points. From surplus→tight→price hike→profit expansion→capacity expansion→over-surplus again. Report believes 2026 is exactly the pivot turning from surplus to tight.

  2023-2024 storage chip market was in serious surplus state, prices low, some enterprises loss-making. Capacity reduction started mid-2025, demand recovery, 2026 supply-demand situation significantly improved, price rise, this is exactly the period of upward cycle pivot.

Asset mapping & comparison

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

• Winbond Electronics (2344.TW)

  Core beneficiary target. DDR4 price increase directly improves its DRAM gross margin; SLC NAND and SiCap new businesses open growth space; Cooperation with SEMCO SiCap presages commercial prospects.

  Strengths

  Strong NOR Flash competitiveness, leading market share; DRAM capacity flexibility, can quickly adapt to price changes; Cooperate with international giant SEMCO in SiCap field, expected to open new growth points.

  Weaknesses

  DRAM still primary revenue source, sensitive to price fluctuations; SLC NAND application scale in data centers still small, needs time verification; Obvious scale disadvantage in competition with large factories like Micron, Hynix.

  Comparison

  Compared to Nanya Technology, Winbond product structure more diversified (NOR Flash, SiCap), less impacted by single product price fluctuation. Compared to GigaDevice, Winbond has larger DRAM capacity, can benefit more fully from DDR4 price increase.

  Risks

  If Micron and Hynix capacity transfer not as expected, supply gap may shrink, price increase lower than expected; Consumer DRAM demand may remain weak, offsetting enterprise demand growth; Geopolitical risks may affect customer orders.

• Nanya Technology (2408.TW)

  Beneficiary target. Specialized operation in DDR4, directly benefits from price increase; LTA increase with server and enterprise SSD customers provides stability; Wuxi capacity shift to DDR5 frees up capacity for DDR4.

  Strengths

  High DDR4 business proportion, deep specialization; High enterprise customer proportion (servers, SSD), relatively anti-cyclical; Establish long-term purchase agreements (LTA) with main customers, income stability good.

  Weaknesses

  Product relatively single, mainly DDR4, affected heavily by industry prosperity fluctuations; High dependence on large customers (such as Intel), customer concentration risk exists; Lack new product lines like SLC NAND.

  Comparison

  Compared to Winbond, Nanya Technology has higher DDR4 specialization, but poorer product diversity. Compared to GigaDevice, Nanya Technology is pure storage chip manufacturer, GigaDevice is design plus foundry, product line richer.

  Risks

  If enterprise data center investment growth slows down, LTA order growth may be lackluster; After Wuxi capacity shifts to DDR5, whether remaining DDR4 capacity sufficient is questionable; Competition intensifies with domestic DRAM manufacturers (such as CXMT).

• GigaDevice Semiconductor (603986.SS)

  Beneficiary target. SLC NAND is one of its core businesses, directly benefits from data center adoption acceleration; MCU business benefits from consumer recovery; DDR4 and specialty DRAM price increase also contributes.

  Strengths

  Most diversified product line, including MCU, NOR Flash, SLC NAND, DDR4, least impacted by single product price fluctuation; MCU business grows fast in domestic substitution wave; Design plus foundry mode flexibility strong.

  Weaknesses

  SLC NAND application scale in data centers still small, commercialization still early; MCU market competition fierce, competition from domestic and foreign manufacturers increasing; Cooperation channels with large international customers relatively not as deep as Winbond and Nanya.

  Comparison

  Compared to Winbond and Nanya Technology, GigaDevice product structure most balanced, growth prospects most diverse. But in terms of DRAM capacity scale inferior to Winbond and Nanya Technology. Compared to consumer electronics chip manufacturers, GigaDevice has highest storage chip proportion.

  Risks

  Commercial uncertainty of SLC NAND greatest; if penetration rate falls short of expectations, impact is significant; Domestic MCU market acceleration but profit margin pressure obvious; Cost management failure may offset price increase benefits.

Key data

• DDR4 Supply-Demand Gap (2H26)19-20%Significantly expanded from prior report expectation of 14%, reflecting actual impact of Micron and Hynix capacity reductions
• DDR4 Supply-Demand Gap (2027-2028)18-20%Expected future two years supply pressure persists, supporting prices
• DDR4 Price Q3 Expected Increase20%Price push calculation based on supply contraction expectations
• Winbond 2026/27/28 EPS Revision Amount23% / 65% / 94%Reflects comprehensive impact of DDR4 price increase, SLC NAND and SiCap business growth
• Nanya Technology 2026/27/28 EPS Revision Amount15% / 29% / 33%Mainly from DDR4 price increase, and LTA increase with server customers
• GigaDevice 2026/27 EPS Revision Amount58% / 60%Benefiting from DDR4 price increase and SLC NAND application acceleration
• Winbond Target PriceNT$222Increased by 122% from previous NT$100, based on 5.5x 2026e BVPS P/B valuation
• Nanya Technology Target PriceNT$380Increased by 36.7% from previous NT$278, based on 3.22x 2026e BVPS P/B valuation
• GigaDevice Target PriceRmb585Increased by 68.1% from previous Rmb348, implied 2026e P/E is 46x
• Winbond Historical P/B Mean (Since 2017)0.5-1.5xSuggested 5.5x P/B significantly exceeds historical mean, reflecting significant improvement in prosperity cycle
• GigaDevice Historical P/E Mean (Since 2016)40xCurrent target P/E 46x slightly higher than historical mean, reflecting improved growth outlook
• DDR4 8Gb 2666Mbps Spot Price (End May 2026)US$27.25Soared over 10 times compared to US$1-2 end of 2024, contract price is US$13
• Winbond 2026e Gross Margin56.8%Significant increase from 34.9% in 2025, main driver of EPS growth
• Winbond 2026e ROE84.9%Far exceeds cost of equity capital 8-10%, indicating sufficient value creation
• Nanya Technology 2026e ROE74%Also at historical high level, supporting valuation increase
• Winbond 2026e P/E10.9xFar below high multiple implied by P/B, because P/B multiplied by high ROE yields reasonable P/E still attractive

Impact & implications

This supply-demand pattern improvement is significant for Greater China storage chip industry chain. First, for Winbond and Nanya Technology, this round of price upward cycle will significantly boost their profit margins and ROE, consequently forming double click on stock prices (profit improvement + valuation expansion). Report's target price implies Winbond has 43% upside potential within 12-18 months, Nanya Technology has 22% upside potential. Second, emergence of new product lines such as SLC NAND and SiCap opens opportunity for these enterprises to break through the red ocean of consumer DRAM competition. These niche fields' gross margins and growth potential usually exceed general DRAM, helping to enhance enterprises' long-term value. Third, this cycle upward attracts external industry capital attention to storage chip sector. Traditionally DRAM industry regarded as cyclical, no-growth "sunset industry", but this supply constraint brought structural improvement may change market perception of this sector. Fourth, from policy and industrial level, Greater China storage chip enterprises' profit improvement helps them continue invest in R&D and capacity construction, enhancing competitiveness and status in global storage chip industry. It needs to be noted, report's optimistic prospect relies on assumption supply constraint lasts 2-3 years. If international giant capacity transfer falls short of expectations, or demand suddenly slides down, these companies face larger downside risks. In addition, competitive landscape in consumer DRAM market remains fierce, Winbond and Nanya Technology still face competition pressure from giants like Micron and Hynix in this business.

Risks

• Micron and SK Hynix capacity transfer not as expected, or transfer progress delayed, leading to supply gap smaller than expected, price increase may fall below 20% target
• Enterprise DRAM demand (eSSD, data centers) growth slows down, cannot offset consumer demand continued weakness, overall demand growth lackluster
• Geopolitical risk escalation, may affect customer orders (especially European and American customers) or capacity acquisition (especially if mainland manufacturers capacity restricted)
• Domestic DRAM manufacturers such as CXMT technology progress accelerates, capacity releases quickly, leading to price competition intensifies, suppressing industry profitability
• Consumer electronics demand below expectations (such as smartphones, PC shipment volume slump), dragging overall DRAM market demand
• SLC NAND and SiCap commercialization progress slower than expected, or terminal application expansion hindered, difficult to contribute significant revenue growth
• US chip export controls to China upgrade, may affect Greater China enterprises customer acquisition and technology access

What to watch

• Track actual progress of Micron capacity shift from Taiwan to US, monitor 2H26 quarterly supply changes conform to expectations
• Focus on SK Hynix Wuxi capacity shift to DDR5 completion schedule, and released DDR4 capacity
• Monitor enterprise DRAM order trends, especially procurement plans from data centers and eSSD manufacturers
• Track Winbond, Nanya Technology, GigaDevice quarterly gross margins and ASP changes, verify price increase transmission effects
• Focus on SLC NAND adoption progress in data centers, including customer trials, large order situations
• Monitor SiCap market development dynamics, especially Winbond cooperation with SEMCO commercialization progress
• Pay attention to CXMT and other domestic DRAM manufacturers capacity release progress and product yield progress
• Follow latest policy trends of US chip export controls to China, assess impact on supply chain