Executive Summary / Key Takeaways

• Strategic Differentiation Drives Growth: United Microelectronics Corporation ($UMC) is strategically transforming into a specialty foundry, with its 22-nanometer and 28-nanometer portfolio now representing a record 40% of total sales in Q2 2025, driven by superior power efficiency and performance in high-end applications like OLED displays and wireless communications.
• Robust Financial Performance Amidst Headwinds: Despite macroeconomic uncertainties and foreign exchange pressures, UMC reported Q2 2025 consolidated revenue of NT$58.76 billion, a 1.6% sequential increase, and achieved a gross margin of 28.7%, demonstrating resilience through product mix optimization and cost management.
• Global Manufacturing Footprint Enhances Resilience: UMC's diversified manufacturing strategy, including the Singapore Fab 12i Phase 3 ramping in 2026 and the 12-nanometer collaboration with Intel targeting 2027 revenue, is crucial for supply chain resilience and attracting customers seeking geographically diverse options.
• Cautious but Optimistic Outlook: Management projects a mild increase in Q3 2025 wafer shipments with firm U.S. dollar ASPs, maintaining its full-year 2025 outlook to outgrow its low single-digit addressable market, underpinned by sustained demand for advanced specialty nodes and a moderating depreciation burden post-2025.
• Competitive Positioning and Innovation: UMC distinguishes itself from larger rivals like Taiwan Semiconductor Manufacturing Company and Chinese foundries by focusing on differentiated specialty technologies and cost-effective, high-volume production, while actively developing advanced packaging solutions for AI and exploring next-generation high-voltage FinFET solutions.

The Specialty Foundry Ascendancy: UMC's Strategic Evolution

United Microelectronics Corporation, established in 1980 and headquartered in Hsinchu City, Taiwan, has cemented its position as a leading global semiconductor wafer foundry. The company's core business revolves around manufacturing and selling integrated circuits, complemented by backend and design support services for diverse markets including mobile and wireless communications, IoT and wearables, computing, data processing, and automotive. UMC's overarching strategy centers on evolving into a specialty foundry, emphasizing differentiated technology solutions and a globally diversified manufacturing footprint to navigate the complex and often volatile semiconductor landscape.

This strategic pivot is critical in an industry characterized by intense competition and rapid technological advancement. UMC's historical journey has been marked by a consistent drive to provide best-in-class performance through innovation, particularly in its advanced technology nodes. This approach allows UMC to carve out a distinct competitive niche against both leading-edge giants like Taiwan Semiconductor Manufacturing Company and emerging players, especially those in China, who often compete on price in more commoditized mature nodes.

Technological Differentiation and Innovation: UMC's Competitive Edge

UMC's core differentiated technology lies in its 22-nanometer and 28-nanometer specialty platforms. These solutions offer significant advantages over standard processes, providing tangible and quantifiable benefits to customers. For instance, UMC's 22-nanometer ultra-low leakage and low-power technology delivers a remarkable 30% to 50% better power saving compared to standard 28-nanometer solutions. This makes it ideal for power-sensitive applications such as IoT devices, wearables, and AI applications, where energy efficiency is paramount. Furthermore, UMC's 22-nanometer display driver solution was the first to market, offering unparalleled performance and establishing the company as a leader in the high-end smartphone OLED display market.

The "so what" for investors is clear: these technological differentiators contribute directly to UMC's competitive moat, enabling the company to command resilient ASPs and secure higher-margin business. This focus on specialty technology allows UMC to increase its revenue contribution from these advanced nodes, thereby reducing its exposure to more price-sensitive, commoditized segments. The 22-nanometer and 28-nanometer portfolio has already demonstrated its financial impact, with revenue from this segment increasing by 15% in 2024 and reaching a record high of 40% of total sales in Q2 2025.

Beyond its current offerings, UMC is actively investing in research and development for new technological frontiers. The company is preparing advanced packaging solutions to address the growing energy consumption of cloud AI and the potential growth in the edge AI market. This includes developing 2.5D interposers with Deep Trench Capacitors (DTC) and discrete DTC for power efficiency in high-computing processors. UMC is also leveraging scalable 3D wafer-to-wafer stacking and Through-Silicon Via (TSV) to enhance the competitiveness of its specialty technology. The company is already in mass production for extremely small form factor 5G and 6G RFICs using wafer-to-wafer stacking and is developing memory-to-memory and memory-to-logic stacking services for high-bandwidth computation requirements. While significant revenue contributions from advanced packaging are not expected in 2025, these initiatives are crucial for UMC's long-term growth strategy, positioning it to capture opportunities in emerging AI-driven markets.

UMC's commitment to innovation extends to exploring solutions beyond its current nodes. The collaboration with Intel on 12-nanometer technology is a testament to this, aiming to offer customers a migration path beyond 22-nanometer. This program is progressing well, with early PDKs expected to be ready for the first wave of customers by June 2026 and customer product tape-outs commencing in 2027. This partnership is strategically vital, providing UMC with a Western manufacturing footprint and access to more advanced process technology, further strengthening its competitive standing.

Financial Performance and Operational Resilience

UMC's recent financial performance reflects its strategic focus and operational effectiveness amidst a challenging global environment. For the second quarter of 2025, UMC reported consolidated revenue of NT$58.76 billion, marking a 1.6% sequential increase from Q1 2025 and a 3.4% year-over-year increase. This growth was primarily driven by a 6.2% quarter-over-quarter increase in wafer shipments, fueled by strong demand in communications (imaging signal processors, NAND controllers, WiFi, and LCD controllers). The capacity utilization rate also improved, rising to 76% in Q2 2025 from 69% in Q1 2025.

Gross margin for Q2 2025 stood at 28.7%. While this figure was impacted by an unfavorable NT dollar appreciation, which eroded the gross margin by nearly 3 percentage points, UMC's ability to maintain this level underscores its product mix optimization and cost management efforts. Net income attributable to shareholders of the parent reached NT$8.90 billion, translating to earnings per ordinary share of NT$0.71. For the first half of 2025, revenue increased by 4.7% to NT$116 billion, with a gross margin of 27.7%.

UMC's liquidity remains robust, with cash on hand exceeding NT$100 billion, reaching approximately NT$111 billion at the end of the first half of 2025.

Total equity for the company was around NT$337.4 billion. The company's 2025 cash-based CapEx budget remains unchanged at USD 1.8 billion. This disciplined capital allocation, combined with an anticipated moderation in depreciation growth to single digits in 2026 and 2027, is expected to lead to a better cost structure and support long-term profitability.

Competitive Landscape and Strategic Positioning

UMC operates in a highly competitive semiconductor foundry market, contending with industry giants like Taiwan Semiconductor Manufacturing Company , GlobalFoundries , Samsung Foundry , and Intel Foundry Services . UMC's strategic positioning is to differentiate itself through specialty technology offerings and a diversified global manufacturing footprint, rather than directly competing on the bleeding edge of process technology or purely on price.

Compared to Taiwan Semiconductor Manufacturing Company , the undisputed leader in advanced nodes, UMC focuses on providing cost-effective and reliable manufacturing for mature and specialty nodes. While Taiwan Semiconductor Manufacturing Company excels in cutting-edge innovation and premium performance, UMC's strength lies in operational reliability and efficiency in established processes, appealing to customers who prioritize cost-effective, scalable production without requiring the absolute latest nodes. This allows UMC to maintain a unique value proposition, particularly in volume-driven segments.

Against GlobalFoundries , another significant player in mature and specialty technologies, UMC competes intensely in sectors like automotive and industrial. UMC's offerings emphasize efficiency in high-volume production and a broad international presence, while GlobalFoundries (GFS) highlights its regional manufacturing resilience in North America and Europe. UMC's ability to offer reliable, scalable fabrication services, potentially with faster turnaround times in certain regions, provides a competitive edge.

UMC's strategy also contrasts with integrated players like Samsung Foundry , which leverages its in-house ecosystem. UMC, as a pure-play foundry, offers greater flexibility and neutrality to third-party customers. While Samsung (SSNLF) benefits from technological synergies, UMC's dedicated foundry model and focus on customer trust in a neutral environment serve as key differentiators.

Intel Foundry Services , an emerging competitor, emphasizes high-performance computing and U.S.-based production. UMC's collaboration with Intel on 12-nanometer technology is a strategic move to gain a Western footprint and address high-performance needs, while UMC's broader global operations continue to offer flexible, cost-efficient options.

UMC's competitive advantages, or "moats," include its cost leadership in manufacturing and its established global network. The company's focus on mature nodes often translates into lower manufacturing costs, enhancing capital efficiency and allowing it to compete effectively against rivals with higher operational costs. Its diversified manufacturing footprint, with operations in Taiwan, China (where its 12X facility runs at full capacity), Japan, and Singapore, provides supply chain resilience and flexibility, attracting customers seeking to mitigate geopolitical risks and diversify their sourcing.

However, UMC faces vulnerabilities, primarily technological gaps in the most advanced nodes compared to Taiwan Semiconductor Manufacturing Company (TSM). This limits its access to the highest-value contracts in cutting-edge AI and high-performance computing. The company actively addresses this by focusing on specialty derivatives of its existing nodes and strategic partnerships like the Intel collaboration to bridge these gaps.

Outlook and Guidance

UMC's management maintains a cautious yet optimistic outlook for the remainder of 2025. For the third quarter of 2025, UMC expects a mild increase in wafer shipments. However, NT dollar-denominated revenue is projected to decline due to adverse foreign exchange movements, as UMC's revenue is fully exposed to currency fluctuations. A 5% appreciation in the NT dollar, for instance, would result in a corresponding 5% reduction in reported NT dollar revenue. Despite this, ASP in U.S. dollar terms is expected to remain firm, driven by a favorable product mix. Gross margin for Q3 2025 is guided to be approximately equal to Q2's, assuming the foreign exchange rate remains at current levels. The capacity utilization rate is projected to be in the mid-70% range.

For the full year 2025, UMC's outlook remains unchanged. The company anticipates its addressable market to grow by a low single-digit percentage, and UMC aims to outgrow this market. This growth is expected to be driven by the continuous strong demand for its 22-nanometer and 28-nanometer business, which management has high confidence will continue to grow in 2025 and beyond into 2026. The new Phase 3 facility at Singapore Fab 12i is on track to start production in January 2026, with higher volumes expected in the second half of 2026, contributing to revenue from that period.

Depreciation expenses, a significant headwind, are expected to increase by a high 20% in 2025. However, the magnitude of this increase is projected to decline significantly to single digits in 2026 and 2027, which should lead to a better cost structure in those years. This long-term trend supports UMC's goal of eventually restoring gross margins to a healthy level in the low 30s to low 40s range post-2025, through improved loading and cost structure management.

Risks and Challenges

Several risks could impact UMC's investment thesis. Foreign exchange fluctuations pose a significant challenge, directly impacting NT dollar-denominated revenue and gross margins. Geopolitical and macroeconomic uncertainties, including potential U.S. tariff policies, create low visibility and cautious customer behavior. While UMC's diversified manufacturing footprint helps mitigate some of these risks, the broader impact on global demand remains a concern.

Capacity oversupply in the industry, particularly in mature nodes, continues to exert pricing pressure. UMC counters this by focusing on technology differentiation and specialty solutions, but the competitive intensity remains high. Additionally, while consumer and communication inventories are healthy, high inventory levels in the automotive and industrial segments are expected to take more time to digest, potentially impacting demand in those areas.

Conclusion

United Microelectronics Corporation is executing a well-defined strategy to thrive in the competitive semiconductor foundry market by focusing on specialty technologies and global manufacturing diversification. Its leadership in 22-nanometer and 28-nanometer solutions, coupled with strategic investments in advanced packaging and the 12-nanometer collaboration with Intel (INTC), positions UMC for sustained growth in key high-value segments. While macroeconomic headwinds, foreign exchange volatility, and industry oversupply present ongoing challenges, UMC's disciplined financial management, robust liquidity, and anticipated moderation in depreciation expenses post-2025 provide a solid foundation. The company's commitment to technological leadership and supply chain resilience underscores its potential to outgrow its addressable market and deliver consistent shareholder value in the long term.