Executive Summary / Key Takeaways

• ChipMOS TECHNOLOGIES INC. ($IMOS) is demonstrating a robust recovery in its memory product segment, driven by strong demand for DDR4/DDR5 and Flash, which is expected to be a primary growth engine in the second half of 2025.
• Despite a challenging Q2 2025 marked by a net loss of TWD 0.75 per share, largely due to significant foreign exchange losses and lower DDIC average selling prices, management anticipates a more favorable foreign exchange environment and improved profitability in Q3 2025.
• The company is strategically enhancing its competitive position through technological differentiation, notably with its low-cost silver alloy bump solution for display driver ICs (DDIC) and targeted CapEx investments in high-growth, high-margin areas like automotive panels and OLED.
• ChipMOS maintains a strong balance sheet and a disciplined capital allocation strategy, including a recent share repurchase program and a stable dividend policy, underscoring management's confidence in the company's long-term value.
• While cautious consumer demand and geopolitical uncertainties persist, ChipMOS is poised to benefit from increasing demand in data center, communications, AI-enhanced products, auto, and robotics, leveraging its specialized OSAT services.

Setting the Stage: A Specialized Leader in Semiconductor Backend Services

ChipMOS TECHNOLOGIES INC. (NASDAQ: IMOS) stands as an industry-leading provider of outsourced semiconductor assembly and test (OSAT) services, a critical link in the global semiconductor supply chain. Incorporated in 1997 and headquartered in Hsinchu City, Taiwan, ChipMOS offers end-to-end solutions to leading fabless semiconductor companies, integrated device manufacturers, and independent semiconductor foundries worldwide. Its comprehensive services span back-end testing for high-density memory, mixed-signal, and display driver semiconductors, alongside various packaging solutions and advanced bumping services. These semiconductors are integral to a vast array of end markets, including personal computers, communications equipment, office automation, and consumer electronics.

The company's overarching strategy consistently prioritizes supporting customers, expanding market share, enhancing profitability, and building shareholder value through disciplined capital allocation. This involves a continuous shift towards higher-growth, higher-margin product areas, a strategy particularly pertinent in the current dynamic semiconductor landscape. Broad industry trends, such as the escalating demand from data centers, the proliferation of AI-enhanced products, advancements in automotive electronics, and the growth of robotics, are creating significant tailwinds for specialized OSAT providers like ChipMOS. These drivers necessitate increasingly sophisticated and reliable assembly and test solutions, playing directly into ChipMOS's core strengths.

Technological Edge and Strategic Differentiation

ChipMOS's competitive advantage is deeply rooted in its specialized technological capabilities and continuous innovation. The company offers a full spectrum of back-end testing services, including engineering testing, wafer probing, and final testing, for complex integrated circuits. Its expertise extends to various packaging solutions, from small outline packages to advanced substrate-based packages, and comprehensive bumping services, including gold bumping, metal composite bumping, and copper pillar technology.

A significant technological differentiator for ChipMOS is its low-cost silver alloy bump solution for panel-level reliability qualification. This innovation has successfully passed reliability tests for small and medium-sized panels, leading to customer design-ins and substantial interest from both overseas and domestic clients. This solution is expected to materially enhance the company's DDIC product competitive position by offering a cost-effective yet reliable alternative, potentially leading to better margins and increased market penetration in the display segment. Furthermore, ChipMOS is actively investing in its memory test platforms to meet the evolving demand for memory upgrades, specifically supporting the transition from DDR3 to DDR4 and DDR5, which are crucial for high-performance computing and AI applications. These targeted investments and technological advancements are foundational to ChipMOS's strategy, contributing directly to its competitive moat by enabling higher average selling prices (ASPs), lower manufacturing costs, and ultimately, improved profitability and market positioning.

Competitive Landscape: Niche Strength in a Global Arena

In the highly competitive OSAT market, ChipMOS operates alongside global giants such as ASE Technology Holding Co., Ltd. (ASXFY), Amkor Technology, Inc. (AMKR), and Jiangsu Changjiang Electronics Tech Co., Ltd. (600584.SS). While these larger players often boast broader portfolios and greater economies of scale, ChipMOS carves out its niche through specialized expertise and high-precision offerings.

Compared to ASE, which focuses on a wide range of advanced packaging, ChipMOS demonstrates qualitatively superior precision in testing for display and memory semiconductors, potentially leading to enhanced reliability in specific applications. This specialized focus allows ChipMOS to attract premium clients in the automotive and display sectors, where stringent quality and reliability are paramount. However, ASE's larger scale often translates to a more extensive global footprint and potentially lower operating costs, giving it an an edge in high-volume production.

Against Amkor, another major OSAT player known for advanced packaging in mobile, automotive, and computing, ChipMOS's offerings may provide qualitatively greater precision in display and memory testing. Amkor, however, often leads in innovation cycles for high-density packaging, particularly for cutting-edge AI chips. ChipMOS's strategic emphasis on customized, high-precision solutions provides a unique value proposition, especially in international markets like Japan and China, contrasting with Amkor's volume-driven efficiency.

When compared to JCET, which is recognized for cost-competitive manufacturing in China, ChipMOS potentially offers qualitatively superior precision in high-integration services for display applications, resulting in better reliability in niche markets. While JCET may offer materially lower pricing for high-volume orders, ChipMOS differentiates itself through its quality excellence and required qualifications, particularly in serving automotive customers. ChipMOS actively improves its product mix by increasing market share in high-profit and high-margin products like OLED, auto panels, flip-chip memory, and other mixed-signal products, directly addressing competitive pressures by focusing on value rather than pure volume. The company also anticipates benefiting from higher quality level requirements for European and American brands, further solidifying its competitive standing.

Financial Performance: Navigating Headwinds with Memory Tailwinds

ChipMOS's financial performance in the first half of 2025 reflects a mixed environment, with strong memory demand offsetting challenges in other segments. In the second quarter of 2025, total revenue increased 3.7% quarter-over-quarter to TWD 5,736 million. However, the company reported a net loss attributable to the company of TWD 533 million, translating to a net loss of TWD 0.75 per basic common share or USD 0.51 per basic ADS. This loss was primarily driven by a significant foreign exchange loss of TWD 690 million, a stark reversal from a TWD 62 million gain in Q1 2025.

Gross margin in Q2 2025 decreased to 6.6% from 9.4% in Q1 2025. This decline was attributed to several factors: lower DDIC test average selling prices (ASPs), the appreciation of the New Taiwan Dollar (NTD) (accounting for a 1.5 percentage point decrease in gross margin), higher electricity charges (a TWD 102 million increase due to summer rates, impacting gross margin by 1.6 percentage points), and a substantial increase in gold material costs (over 30% compared to Q2 2024).

Despite these headwinds, the memory product segment demonstrated significant strength, representing 45.3% of Q2 2025 revenue and growing 21.2% quarter-over-quarter and 17.6% year-over-year. DRAM revenue surged 19.8% quarter-over-quarter, with Niche DRAM increasing 29.3%. Flash revenue also saw robust growth, up 21.7% quarter-over-quarter and 23.1% year-over-year, with NAND Flash revenue notably increasing around 40% year-over-year. In contrast, the Driver IC (DDIC) and Gold Bump segment experienced a 9.4% quarter-over-quarter and 17.9% year-over-year decline in revenue, impacted by ASP and foreign exchange pressures.

ChipMOS maintains a strong balance sheet, with cash and cash equivalents of TWD 13,662 million as of June 30, 2025. Net free cash inflow for the first half of 2025 was TWD 1,667 million, an increase from TWD 1,433 million in the same period of 2024, primarily due to reduced CapEx and favorable income tax changes. This strong liquidity position provides the company with flexibility to navigate market uncertainties and pursue strategic investments.

Strategic Initiatives and Outlook: Building for Future Growth

Looking ahead to the third quarter and the second half of 2025, ChipMOS anticipates a continued solid momentum in its memory product business. This is expected to be driven by a supply and demand imbalance for DDR4 and MLC NAND, largely due to their End-of-Life (EOL) status, coupled with strong demand for DDR5. To mitigate the impact of rising material costs, particularly for substrates and gold, ChipMOS implemented OSAT price increases for memory products ranging from 5% to 18% in Q3 2025, aiming to improve profitability. Management also expects a more favorable foreign exchange rate to positively impact operations in Q3.

While DDIC product demand weakness is expected to persist in Q3 2025, OLED products are projected to benefit from seasonal restocking, and automotive panel momentum is anticipated to remain relatively stable. The company remains positive about the long-term prospects of its DDIC business.

ChipMOS is taking a conservative approach to its 2025 CapEx budget, similar to prior years, with targeted investments in higher-growth, higher-margin product areas to reduce depreciation pressure. The 2025 CapEx is guided to be roughly 15% to 20%. This disciplined capital allocation strategy, combined with a focus on cost reductions, quality improvements, and operational strength, is designed to enhance profitability and maintain competitive advantage. The company recently distributed a cash dividend of approximately NT$1.23 per common share in July 2025 and authorized a new share repurchase program of up to NT$480 million (approximately US$15.7 million) in September 2025, reflecting management's conviction that the shares are undervalued and a commitment to shareholder value.

Risks and Challenges

Despite the optimistic outlook for certain segments, ChipMOS faces several risks. Cautious end-consumer demand, stemming from global economic uncertainty and early restocking in the first half of the year, could temper overall growth. The ongoing fluid trade policies, particularly those related to U.S. and China restrictions, continue to cause uncertainty about future quarters, although the direct impact on ChipMOS's operations has been low to none thus far. Persistent demand weakness in the DDIC segment, especially for TV panels and smartphones, also presents a challenge. Furthermore, the slowing momentum in auto panel and OLED businesses, with customers adopting more conservative order patterns, could impact revenue in these otherwise promising areas.

Conclusion

ChipMOS TECHNOLOGIES INC. is demonstrating resilience and strategic foresight in a dynamic semiconductor market. The company's core investment thesis rests on its specialized leadership in OSAT services, particularly its robust memory product segment and its targeted technological advancements in DDIC. While Q2 2025 presented financial headwinds, notably from foreign exchange losses and DDIC ASP pressure, the anticipated memory resurgence, strategic price increases, and expected favorable foreign exchange rates in Q3 2025 signal a path towards improved profitability.

ChipMOS's disciplined capital allocation, commitment to shareholder returns through dividends and share repurchases, and continuous focus on higher-growth, higher-margin product areas like AI-enhanced products, data centers, automotive, and OLED, position it favorably for long-term value creation. The company's technological edge, exemplified by its low-cost silver alloy bump solution, provides a crucial competitive advantage against larger rivals by offering specialized, high-precision solutions. Investors should monitor the execution of its strategic initiatives and the broader macroeconomic environment, but ChipMOS's foundational strengths and proactive management suggest a compelling opportunity for growth as the semiconductor industry cycles upwards, driven by next-generation technologies.