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Amkor's Communications Business Weakens: Can a Recovery Take Hold?
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Key Takeaways
Amkor's Communications revenues fell 28% year over year in Q3 2026, with its sales share dropping to 37%.
SiP transfers to Vietnam and memory constraints are weighing on sales, with another Q4 decline expected.
Computing and Automotive and Industrial sales each rose 37% as gross margin climbed to 18.3% from 14.3%.
Amkor Technology (AMKR - Free Report) is grappling with a sharp contraction in its Communications business, as smartphone-related production disruptions and material constraints weigh on sales. Communications revenues declined 28% year over year and 8% sequentially in third-quarter 2026. The end market accounted for 37% of total revenues, down from 51% a year earlier, limiting consolidated revenue growth to just 0.2%.
The weakness primarily reflects the strategic migration of system-in-package (SiP) programs from Korea to Vietnam and associated preproduction activities. Memory supply constraints, higher component costs and changes in smartphone build patterns have added pressure. Management expects these headwinds to persist into the fourth quarter, with Communications revenues projected to decline a high-single-digit percentage sequentially. Both iOS- and Android-related business is expected to weaken, while lower-tier Android devices face greater difficulty absorbing higher memory prices.
Nevertheless, the transfer could improve Amkor's longer-term operating model. Management sees a meaningful SiP pipeline and expects business to rebound as Vietnamese production scales. The move also frees Korean cleanroom capacity for higher-value advanced packaging. Meanwhile, Computing and Automotive and Industrial revenues each rose 37% year over year in the third quarter, cushioning the Communications decline and supporting gross-margin expansion to 18.3% from 14.3% a year earlier.
A Communications recovery therefore appears possible, but not imminent. Its pace depends on completing the SiP transition, easing supply constraints and stronger smartphone demand; for now, growth elsewhere offers the clearer offset.
AMKR Faces Stiff Competition in Advanced Chip Packaging
GlobalFoundries (GFS - Free Report) poses competition to Amkor through advanced packaging solutions for mobile connectivity chips. GlobalFoundries has qualified its SLATE wafer-bonding technology for compact 5G radio-frequency components, potentially improving semiconductor integration and efficiency. Although primarily a foundry rather than a traditional outsourced assembly-and-test provider, GlobalFoundries offers integrated manufacturing and packaging capabilities that could intensify competition for selected communications-related semiconductor programs.
Intel (INTC - Free Report) competes with Amkor through advanced packaging technologies, including Foveros 3D stacking and EMIB interconnect solutions. Intel is strengthening its position in heterogeneous integration and chiplet-based architectures, targeting AI and high-performance computing applications. Intel’s extensive manufacturing infrastructure and advanced packaging expertise could intensify competition for high-value semiconductor projects, although Amkor maintains a stronger focus on outsourced packaging and smartphone-related SiP services.
AMKR’s shares have declined 12.7% year to date, underperforming the broader Zacks Computer and Technology sector’s 6.2% rise.
AMKR’s YTD Price Performance
Image Source: Zacks Investment Research
From a valuation standpoint, AMKR trades at a forward 12-month P/E of 13.38X, higher than the industry average of 9.47X. The company carries a Value Score of A.
AMKR’s Valuation
Image Source: Zacks Investment Research
The Zacks Consensus Estimate for AMKR’s 2026 earnings is pegged at $2.50 per share, reflecting downward revisions over the past 30 and 60 days. Nevertheless, the estimate implies 66.67% year-over-year earnings growth.
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Amkor's Communications Business Weakens: Can a Recovery Take Hold?
Key Takeaways
Amkor Technology (AMKR - Free Report) is grappling with a sharp contraction in its Communications business, as smartphone-related production disruptions and material constraints weigh on sales. Communications revenues declined 28% year over year and 8% sequentially in third-quarter 2026. The end market accounted for 37% of total revenues, down from 51% a year earlier, limiting consolidated revenue growth to just 0.2%.
The weakness primarily reflects the strategic migration of system-in-package (SiP) programs from Korea to Vietnam and associated preproduction activities. Memory supply constraints, higher component costs and changes in smartphone build patterns have added pressure. Management expects these headwinds to persist into the fourth quarter, with Communications revenues projected to decline a high-single-digit percentage sequentially. Both iOS- and Android-related business is expected to weaken, while lower-tier Android devices face greater difficulty absorbing higher memory prices.
Nevertheless, the transfer could improve Amkor's longer-term operating model. Management sees a meaningful SiP pipeline and expects business to rebound as Vietnamese production scales. The move also frees Korean cleanroom capacity for higher-value advanced packaging. Meanwhile, Computing and Automotive and Industrial revenues each rose 37% year over year in the third quarter, cushioning the Communications decline and supporting gross-margin expansion to 18.3% from 14.3% a year earlier.
A Communications recovery therefore appears possible, but not imminent. Its pace depends on completing the SiP transition, easing supply constraints and stronger smartphone demand; for now, growth elsewhere offers the clearer offset.
AMKR Faces Stiff Competition in Advanced Chip Packaging
GlobalFoundries (GFS - Free Report) poses competition to Amkor through advanced packaging solutions for mobile connectivity chips. GlobalFoundries has qualified its SLATE wafer-bonding technology for compact 5G radio-frequency components, potentially improving semiconductor integration and efficiency. Although primarily a foundry rather than a traditional outsourced assembly-and-test provider, GlobalFoundries offers integrated manufacturing and packaging capabilities that could intensify competition for selected communications-related semiconductor programs.
Intel (INTC - Free Report) competes with Amkor through advanced packaging technologies, including Foveros 3D stacking and EMIB interconnect solutions. Intel is strengthening its position in heterogeneous integration and chiplet-based architectures, targeting AI and high-performance computing applications. Intel’s extensive manufacturing infrastructure and advanced packaging expertise could intensify competition for high-value semiconductor projects, although Amkor maintains a stronger focus on outsourced packaging and smartphone-related SiP services.
AMKR’s Share Price Performance, Valuation & Estimates
AMKR’s shares have declined 12.7% year to date, underperforming the broader Zacks Computer and Technology sector’s 6.2% rise.
AMKR’s YTD Price Performance
Image Source: Zacks Investment Research
From a valuation standpoint, AMKR trades at a forward 12-month P/E of 13.38X, higher than the industry average of 9.47X. The company carries a Value Score of A.
AMKR’s Valuation
Image Source: Zacks Investment Research
The Zacks Consensus Estimate for AMKR’s 2026 earnings is pegged at $2.50 per share, reflecting downward revisions over the past 30 and 60 days. Nevertheless, the estimate implies 66.67% year-over-year earnings growth.
Image Source: Zacks Investment Research
AMKR stock currently carries a Zacks Rank #3 (Hold). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.