U.S. CoWoS Market

CoWoS Market Overview

According to Kings Research, the U.S. CoWoS market size was valued at USD 308.21 million in 2025 and is projected to reach USD 1,939.02 million by 2033, growing at a CAGR of 26.10% from 2026 to 2033. The market is driven by increasing demand for advanced semiconductor packaging capable of integrating multiple processors, high-bandwidth memory (HBM) stacks, and memory dies within a single high-performance package.

The CoWoS (Chip-on-Wafer-on-Substrate) technology enables heterogeneous integration of logic processors, GPUs, AI accelerators, SoCs, chiplets, and HBM into a single package. The technology addresses the increasing computational and memory-bandwidth requirements of artificial intelligence (AI), high-performance computing (HPC), and data-center applications. Rising investments in advanced packaging technologies, semiconductor fabrication capacity, and next-generation processors are creating further opportunities for the U.S. CoWoS market.

Key companies operating in the market, including Taiwan Semiconductor Manufacturing Company, Samsung Electronics, ASE Technology Holding, Amkor Technology, Intel Corporation, NVIDIA, AMD, Broadcom, Deca Technologies, Micron Technology, Powertech Technology, and others, are expanding production and advanced packaging capabilities to address increasing demand for AI and high-performance computing applications. 

• In June 2026, TSMC and Amkor Technology announced a 10-year strategic partnership to expand advanced semiconductor packaging and testing capabilities in Arizona (U.S.). The agreement involves TSMC procuring advanced packaging and testing services from Amkor to address rising demand for high-performance computing, artificial intelligence, and advanced electronics. 

Key Market Highlights

• According to Kings Research, the U.S. CoWoS market size was valued at USD 308.21 million in 2025.
• The market is projected to grow at a CAGR of 26.10% from 2026 to 2033.
• CoWoS-L is forecast to register the highest CAGR of 33.38% during the forecast period.
• ASIC accounted for the largest component-type share in 2025, with a 63.40% share valued at USD 195.40 million.
• Cloud service providers (CSPs) and hyperscalers accounted for the largest end-user share in 2025, with a 55.80% share valued at USD 171.98 million.

How is the rise in high-performance computing driving the U.S. CoWoS market growth?

Increasing demand for AI, machine learning, and data-center applications is driving the adoption of advanced semiconductor packaging technologies such as CoWoS. The technology enables GPUs and AI accelerators to be integrated with HBM on a common substrate, improving memory bandwidth and processing performance for demanding workloads.

The U.S.'s strong data-center and HPC ecosystem is further supporting demand for high-performance processors.

• January 2025: OpenAI, SoftBank, Oracle, and MGX announced the Stargate AI infrastructure initiative, initially targeting USD 500 billion in investment and 10 GW of AI computing infrastructure, highlighting the scale of investment in AI computing capacity. 

How does the concentration of CoWoS packaging capacity negatively impact the U.S. semiconductor market?

The concentration of advanced CoWoS packaging capacity represents a major constraint for the U.S. market. Rising demand from AI chip manufacturers has placed substantial pressure on existing capacity, while limited production availability and long lead times can restrict the supply of advanced packaged chips.

TSMC's dominant position in CoWoS manufacturing creates additional supply-chain concentration. In December 2025, its CoWoS-S and CoWoS-L lines were reportedly fully booked, with lead times ranging from 52 to 78 weeks. NVIDIA, Broadcom, and AMD together accounted for more than 85% of TSMC's CoWoS capacity, further highlighting the concentration of demand.

To address these constraints, semiconductor companies are investing in alternative advanced packaging technologies and domestic production capabilities. In March 2026, Intel moved its EMIB-T advanced packaging technology into production, targeting greater diversification in the advanced packaging ecosystem. 

How is the adoption of Panel-Level Packaging (PLP) and CoPoS emerging as a notable trend in the U.S. advanced semiconductor packaging market?

Panel-Level Packaging (PLP) is emerging as a potential alternative to conventional wafer-based packaging by using larger rectangular panels to improve manufacturing efficiency, throughput, and cost economics. The technology can support larger packages and the high-density interconnects required for AI accelerators and HPC applications.

Chip-on-Panel-on-Substrate (CoPoS) is another emerging technology that replaces conventional silicon interposers with glass-based substrates, enabling larger AI chip packages.

• In June 2026, TSMC launched a CoPoS pilot line at its Longtan facility, targeting limited-volume production during the second half of 2026 and 2027. 

 CoWoS Market Report Segmentation

Why is CoWoS-L expected to witness strong growth?

Based on technology, the market is categorized into CoWoS-S, CoWoS-R, and CoWoS-L. CoWoS-L is expected to register the highest CAGR of 33.38% over the forecast period as AI accelerators and HPC processors require increasingly large package sizes, higher interconnect density, and advanced multi-chip integration.

The technology combines the advantages of CoWoS architecture with advanced interconnect capabilities, making it suitable for next-generation AI processors and high-performance computing applications. The increasing complexity of AI accelerator architectures is expected to support demand for CoWoS-L technology.

Why do ASICs account for the largest component share?

Based on component type, the market is classified into ASIC, CPU, FPGA, GPU, and Others. ASICs represented the largest component segment of 63.40% in 2025, supported by their increasing deployment in AI accelerators and specialized computing systems.

ASICs benefit from application-specific architectures that can provide high performance and power efficiency for targeted workloads. As AI infrastructure expands, demand for specialized accelerators is increasing, supporting the use of CoWoS packaging for high-performance ASIC designs.

GPUs also represent a significant opportunity as they remain widely deployed across AI training, inference, cloud computing, and HPC applications.

Why do cloud service providers and hyperscalers lead CoWoS adoption?

Based on end user, the market is segmented into Cloud Service Providers (CSPs) & Hyperscalers, AI Cloud & GPU-as-a-Service Providers, Enterprise Data Centers, Telecommunications & Networking, Government, Defense & Supercomputing Centers, and Others.

Cloud service providers and hyperscalers accounted for the largest share of 55.80% in 2025. Their leading position is supported by rapid expansion of AI infrastructure, hyperscale data centers, and cloud-based computing services.

The increasing deployment of GPUs and AI accelerators for model training and inference requires advanced packaging solutions that deliver high memory bandwidth and processing performance. Continued investment in AI-focused data centers is therefore expected to support CoWoS demand among hyperscale operators.

What is the market scenario across the U.S. advanced semiconductor packaging ecosystem?

The dominance of the U.S. in data centers, artificial intelligence, and high-performance computing fuels the demand for logic chips required to train, deploy, and enhance the computational power of AI models. The rise in demand is driving investments in the U.S. semiconductor industry to increase chip production, with the CHIPS and Science Act acting as a pivotal base boosting new private investments in semiconductor manufacturing estimated at USD 450 billion across 28 states in the U.S. The demand for efficient chips that combine multiple dies and pack on a single substrate and offer improved power efficiency, thermal performance, and a compact footprint critical for AI, HPC, and cloud workloads drives the growth of the CoWoS market in the U.S.

Additionally, advanced LLMs and increasing generative AI applicability across the commercial and industrial landscape of the U.S. further fuel high-capacity and fast memory processing chips that handle the rising computing workloads. The transition of artificial intelligence beyond pilot projects towards embedding AI directly into core business operations further drives the demand for efficient computing chips, thereby creating growth avenues for CoWoS in the U.S. market.

• In April 2026, the Semiconductor Equipment and Materials International (SEMI) projected investments exceeding USD 151 billion in 300 mm memory fabrication equipment by 2027. The high demand is driven by strong AI-led demand for advanced memory technologies, including HBM, DDR5, and 3D NAND. CoWoS equipment spending is further anticipated to reach USD 37 billion, driven by rising adoption of AI accelerators and cloud infrastructure. 

Regulatory Frameworks

• The SEMI S2 guidelines specify guidelines for maintaining chemical emissions from semiconductor equipment to be kept in the air extremely low, as less than 1% of the American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) or permissible exposure limit (PEL) during normal equipment operation. 

• The Semiconductor Superiority Act amends the CHIPS and Science Act and extends Section 48D tax credits to space-based semiconductor manufacturing. The Act is targeted at boosting U.S. investment in microgravity chip production; strengthening domestic semiconductor capabilities; improving supply chain resilience; and enhancing global competitiveness. 

What key strategies are companies adopting to strengthen their position and drive growth in the CoWoS market?

Key players operating in the market are incorporating strategic mergers, acquisitions, and technical collaborations to strengthen their competitive positioning and capture a larger share of the market. Market players are emphasizing expansion of advanced packaging capacity, strengthening supply chain capabilities, and securing long-term manufacturing partnerships to address the rising demand for AI and high-performance computing applications. Companies are further undertaking strategic acquisitions to accelerate capacity expansion and gain access to advanced production infrastructure and investing in next-generation packaging technologies to cater to future demands for AI chips. 

• In April 2026, Taiwan Semiconductor Manufacturing Company (TSMC) unveiled plans to open an advanced chip packaging facility in Arizona by 2029 to support the growing demand for AI chips and strengthen semiconductor manufacturing in the United States. The plant will provide CoWoS and 3D-IC packaging technologies, which are essential for assembling modern AI processors used by companies such as Nvidia and Apple. 

• In January 2026, Micron Technology, Inc. signed a Letter of Intent for the acquisition of the P5 fabrication site of PSMC in Tongluo, Taiwan, for USD 1.8 billion. The acquisition is targeted at expanding the CoWoS production and addressing rising global demand for memory solutions. 

• In April 2025, TSMC Limited announced the expansion of CoWoS capabilities to support larger interposers. The company announced a transition from 3.5X reticle size to 5X, 9X, and beyond to address the rising AI demand for logic and HBM. 

Key Companies In The U.S. CoWoS Market 

• Taiwan Semiconductor Manufacturing Company Limited
• Samsung Electronics Co., Ltd.
• ASE Technology Holding Co, Ltd.
• Amkor Technology, Inc.
• Intel Corporation
• NVIDIA Corporation
• Advanced Micro Devices, Inc.
• Broadcom Inc.
• Marvell Technology, Inc.
• Deca Technologies, Inc.
• Micron Technology, Inc.
• Powertech Technology Inc.
• United Microelectronics Corporation
• Chipbond Technology Corporation
• JCET Group Co., Ltd.

 Recent Developments 

• In June 2026, AMD introduced Versal Premium Gen 2 Memory-on-Package (MoP) adaptive SoCs, which integrate up to 32 GB of LPDDR5X memory directly into the chip package and deliver 288 GB/s memory bandwidth, resulting in board space reduction by up to 60%. 

• In October 2025, TSMC introduced Direct-to-Silicon Liquid Cooling Integrated on CoWoS Platform, which addresses thermal challenges associated with HPC and AI applications. The innovation enables higher power densities, improved thermal efficiency, and enhanced performance for AI accelerators and high-bandwidth memory (HBM)-based processors while supporting next-generation multi-die architectures. 

• In February 2025, NVIDIA scaled its CoWoS orders from TSMC owing to the strong demand for Blackwell architecture GPUs of NVIDIA. The company secured approximately 70% of TSMC's CoWoS-L advanced packaging capacity for 2025, with total annual shipments expected to surpass 2 million units.

Research Methodology

How We Gather This Information

Our methodology triangulates insights from multiple independent and publicly available research databases and is further validated against regulatory filings and public company disclosures. All estimates are cross-verified; no single-source data is presented without validation.

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