On July 30, 2026, Amkor Technology, a global leader in semiconductor packaging and test services, released its Q2 earnings for the period ending June 30, 2026. Revenue reached $1.82 billion, up 16% year-over-year, and net profit was $280 million, up 22%, both surpassing Wall Street analysts' expectations. This outstanding performance reaffirms that the advanced packaging industry is in a period of strong demand, providing solid support for the valuation recovery of the US OSAT sector.

Earnings Highlights: Advanced Packaging as Growth Engine

Amkor's Q2 earnings showed that advanced packaging (including 2.5D/3D packaging, fan-out packaging, system-in-package, etc.) contributed 58% of total revenue, up from 48% in the same period last year. CEO Giel Rutten said in the conference call: "This quarter we saw strong orders from AI, high-performance computing, and automotive electronics, especially with 2.5D packaging utilization near full capacity." The earnings also showed gross margin improved to 24.5%, mainly due to higher value-added from advanced packaging and operational efficiency improvements.

Industry Background: Dual-track Capacity Shift in Asia Pacific and US Return

Amkor's performance is not isolated. Asia Pacific, as a global OSAT hub, is undergoing profound structural changes. On one hand, Southeast Asian countries like Malaysia and Vietnam continue to attract OSAT giants to expand capacity to diversify manufacturing risks. Amkor earlier this year announced a $2 billion investment in a new Vietnam plant focused on advanced packaging. On the other hand, the US government is promoting domestic packaging capabilities through the CHIPS and Science Act, with Amkor's Arizona plant expected to start production in 2027. This "dual-track" strategy reflects the complex restructuring of the global semiconductor supply chain, and advanced packaging, as a key technology for improving chip performance in the post-Moore era, has become a crucial battleground.

US OSAT Sector: Rebalancing Valuation and Growth

OSAT leaders like Amkor, ASE, and JCET show divergent performance in the US market. Amkor currently has a P/E ratio of about 18, slightly below the semiconductor equipment sector average, but considering its revenue growth and margin improvement, valuations still have upside. ASE (ADR ticker ASX) also benefits from advanced packaging orders but trades at a discount due to geopolitical uncertainties. While JCET is not directly listed in the US, as the world's third-largest OSAT, it influences US OSAT ETFs (e.g., SOXX, SMH) through industry chain linkages. Notably, several Wall Street investment banks have recently upgraded OSAT sector ratings. Morgan Stanley noted, "As AI chip heterogeneous integration accelerates, advanced packaging will contribute over 40% of industry profits by 2027, and leading companies will benefit from both volume and price increases."

Investment Strategy: Focus on Technology and Customer Structure

For investors looking to invest in US-listed advanced packaging stocks, three key points are recommended:

  • Technology Roadmap: Prioritize companies with mass production experience in cutting-edge areas like 2.5D/3D packaging, hybrid bonding, and panel-level packaging. The depth of Amkor's cooperation with IDMs such as TSMC and Intel is an important indicator.
  • Customer Concentration: A diversified customer base helps withstand single demand fluctuations. Amkor's top five customers account for 35% of revenue, a relatively balanced mix including NVIDIA, AMD, and Qualcomm.
  • Geopolitical Risk Hedging: Southeast Asia capacity deployment becomes a key consideration. Companies with production in Vietnam and Malaysia are more favored by long-term capital.

Additionally, investors can consider US OSAT ETFs such as the "AI Chip & Packaging ETF" (ticker CHIP), which holds Amkor, ASE, Applied Materials (equipment supplier), etc., to diversify stock risk.

Risk Warning and Outlook

Despite high industry sentiment, several risks remain: First, US technology export controls on China may escalate further; if advanced packaging equipment or materials are affected, capacity expansion could be hindered. Second, global economic slowdown may dampen consumer electronics demand, dragging down OSAT utilization. Third, technology roadmap debates persist, such as the competition between hybrid bonding and 3D SoIC, making single-technology bets risky. Overall, Amkor's Q2 earnings strongly endorse the robustness of advanced packaging. In the long cycle driven by AI and HPC, OSAT leaders with technological advantages are likely to benefit continuously. Investors should closely track subsequent quarterly earnings and industry capacity utilization changes to capture tactical trading opportunities.

As of press time, Amkor's after-hours stock price rose 3.5% to $32.40. The market is awaiting next week's investor conferences from ASE and TSMC to further confirm industry trends.