ASE Technology Holding Co., Ltd. (NYSE: ASX) is up about 3% in U.S. trading as investors react to a fresh earnings-driven catalyst from the company’s first-quarter 2026 report and outlook updates. The move follows a Q1 print that beat consensus on both revenue and earnings, with management highlighting strength in its assembly, testing and materials (ATM) business and continued momentum in advanced packaging services.

For Q1 2026, ASE posted revenue of about $5.43 billion versus roughly $5.28 billion expected, a beat of about $154 million. Earnings also came in ahead of expectations, with actual EPS of $0.20 versus $0.17 consensus. Management commentary also emphasized record ATM revenue of TWD 112.4 billion and framed LEAP (advanced packaging-related) services as a primary growth engine.

Beyond the beat, the bigger support for the stock today is the forward view. Management raised 2026 LEAP revenue guidance by about 10% to over $3.5 billion and issued a bullish Q2 setup, guiding for consolidated revenue growth of about 7%–9% quarter-over-quarter and ATM revenue growth of about 9%–11%. The company also guided to modest sequential gross-margin improvement, reinforcing the idea that the advanced packaging mix can keep lifting profitability even as the company invests for capacity expansion.

Investors are also weighing the cost of growth: management flagged rising capex and heavy spending extending into 2027, with increased depreciation likely to be a near-term headwind for free cash flow. Still, today’s price action suggests the market is prioritizing the revenue beat, ATM strength, and raised LEAP trajectory over near-term cash-flow pressure.