ChipMOS TECHNOLOGIES INC. (NASDAQ: IMOS) saw its shares climb 11.7% on Tuesday, closing at $59.28, after the chip testing company reported its strongest quarterly revenue since 2014 and a significant rebound in profitability. The stock's surge was accompanied by trading volume of 227,508 shares, nearly 1.9 times its three-month average, indicating strong investor interest.
Record Revenue and Margin Expansion
For the second quarter of 2026, ChipMOS generated revenue of NT$7.38 billion, a 28.7% year-over-year increase. Gross margin expanded to 18.0%, up from 6.6% in the same period last year, while operating margin improved dramatically to 12.8% from just 0.4%. Net profit attributable to shareholders reached NT$891.7 million, translating to a net margin of 12.1%.
The 11.4-percentage-point recovery in gross margin underscores that pricing and utilization are now aligned with robust demand. Chairman and President S.J. Cheng noted, "Q2 revenue reached its highest level since 2014, as demand continues to exceed capacity." He added, "Better pricing, product mix and utilization are now translating demand strength into meaningful operating leverage."
Segment Performance and Demand Drivers
Memory products accounted for 51% of total revenue, growing over 46% year-over-year. DRAM sales surged more than 70%, fueled by strong demand for DDR4 and the scaling of DDR5. Automotive and industrial product sales also climbed over 45% year-over-year, representing 28.9% of total sales. Overall utilization stood at 72%, with assembly at 78%, test at 74%, DDIC at 69%, and bumping at 65%.
Cheng highlighted that available supply still lags behind ongoing AI-related demand. The company has secured increased pricing for services tied to limited equipment and resources, and plans to pass these increases on to customers.
Capital Expenditure and Cash Flow Concerns
Despite the strong operational performance, capital expenditure remains a key focus. Second-quarter capital spending totaled NT$2.38 billion, representing 32.2% of revenue. Free cash flow for the first half declined 55.9% to NT$735.9 million, though cash reserves stood at NT$12.55 billion. Management projects capital intensity for 2026 to exceed 25% of revenue, with further expansion planned for 2027.
ChipMOS is building a new facility in Tainan Science Park to expand memory testing and mixed-signal operations, adding capacity for DRAM, NAND, and logic production. Investors are counting on sustained demand to justify the heavy spending.
Market Reaction and Outlook
The stock's positive response reflects the market's approval of the operating leverage. However, shares remain 24.3% below their 52-week peak, as investors have already priced in much of the recovery from the lows. The stock trades at 2.22 times annualized Q2 sales, based on a market value of US$2.06 billion.
Analyst coverage in the US is limited, with only one Hold rating reported by MarketBeat and no consensus from StockAnalysis. This places greater emphasis on company guidance and operational metrics.
Risks include a downturn in memory prices, weaker end demand, or delays in customer qualifications, which could reduce utilization and pressure margins. High capital expenditures may also keep free cash flow below profit recovery levels.
With operating margin at 12.8% and capital spending exceeding a quarter of annual sales, ChipMOS's ability to maintain demand strength in the second half will be critical to sustaining shareholder value.