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What is the semiconductor supply chain from raw materials to chips?

AlphaOS investment intelligence · Research and education only — not investment advice · Updated Jul 5, 2026

The semiconductor supply chain is a complex, globalized process that transforms raw materials like silicon into highly integrated circuits, involving distinct stages from material refinement and wafer fabrication to chip design, manufacturing, assembly, testing, and packaging, with specialized companies dominating each segment.

Key Takeaways

  • The supply chain begins with raw materials such as silicon, gallium arsenide, and rare earth elements, which are refined into semiconductor-grade ingots.
  • Ingots are sliced into thin wafers, primarily by companies like Shin-Etsu Chemical and SUMCO, which are then polished and prepared for fabrication.
  • Chip design, or Intellectual Property (IP) core development, is a critical upstream stage, dominated by companies like Arm Holdings and Synopsys.
  • Wafer fabrication (foundry services) is highly concentrated, with TSMC holding approximately 60% of the global market share for advanced logic, followed by Samsung Foundry.
  • Semiconductor manufacturing equipment, essential for fabrication, is supplied by a few key players, including ASML for lithography, Applied Materials for deposition and etch, and KLA Corporation for process control.
  • After fabrication, chips undergo assembly, testing, and packaging (ATP) by Outsourced Semiconductor Assembly and Test (OSAT) companies like ASE Technology Holding and Amkor Technology.
  • Finally, integrated circuits are distributed to original equipment manufacturers (OEMs) for integration into electronic devices, completing the supply chain.
  • The supply chain is characterized by high capital expenditure, specialized expertise, and significant geopolitical considerations.

Evidence & Analysis

  • TSMC's market share in the foundry industry reached 59% in Q4 2023, according to TrendForce.
  • ASML holds a near-monopoly on EUV lithography machines, which are essential for producing the most advanced chips (e.g., 3nm, 5nm).
  • Arm's CPU designs are foundational to the mobile computing industry, with billions of chips shipped annually based on its architecture.
  • The semiconductor manufacturing equipment market was valued at approximately $107 billion in 2023, with Applied Materials, ASML, Lam Research, and KLA being major players.
  • The global semiconductor market is projected to reach over $1 trillion by 2030, underscoring the industry's scale and complexity.

Key Companies

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