ASE Technology

ASE Technology is a leader in the OSAT segment of the semiconductor & AI supply chain, headquartered in Kaohsiung. Its key suppliers include Tokyo Electron, Advantest, Teradyne. Its key customers include NVIDIA, AMD, Qualcomm.

World's largest OSAT, includes SPIL; key advanced packaging partner.

Ticker
NYSE: ASX
Headquarters
Kaohsiung
Founded
1984
Revenue
$20.6B (FY2025) · +13.3% YoY
Net income
$1.3B
Operating margin
8.0%
Market position
leader
Value-chain segment
Outsourced Assembly & Test, Advanced Packaging Services
Key products
Advanced IC packaging (Fan-Out, Flip-Chip), SiP (System-in-Package) modules, Wire-bonding assembly and test, CoWoS substrate interposer assembly (with TSMC), Testing services (burn-in, final test)

About ASE Technology

ASE Technology, headquartered in Taiwan, operates in the Outsourced Assembly & Test and Advanced Packaging Services segments of the semiconductor & AI supply chain and is positioned as a market leader there. Its key products include Advanced IC packaging (Fan-Out, Flip-Chip), SiP (System-in-Package) modules, Wire-bonding assembly and test, CoWoS substrate interposer assembly (with TSMC), Testing services (burn-in, final test). wafergraph maps 20 tracked suppliers and 72 tracked customers for ASE Technology across the value chain. It has a supply-chain criticality score of 81/100, with 235 companies downstream of it.

Advanced Semiconductor Engineering, Inc., previously known as ASE Group, is a leading provider of independent semiconductor packaging and test manufacturing services, with its headquarters in Kaohsiung, Taiwan.

Role in the chain

ASE Technology is a market leader in OSAT (Outsourced Assembly & Test), headquartered in Taiwan. World's largest OSAT, includes SPIL; key advanced packaging partner.

Diligence questions

  1. The dataset records 20 tracked suppliers for ASE Technology. Which of those edges are researched (named in a filing or primary source) versus segment-inferred, and what happens if one of them stops shipping?
  2. 9 of ASE Technology's tracked suppliers are a monopoly or leader (including Advantest, ASMPT, BE Semiconductor Industries, DISCO). Which of those are actually single-source for the process step you care about?
  3. The dataset names 72 tracked customers for ASE Technology. How concentrated is demand among those names, and which of them have a documented second source in this graph?
  4. ASE Technology is positioned as a leader in OSAT. How replaceable is this vendor on the process step you are buying?
  5. ASE Technology is headquartered in Taiwan. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
  6. ASE Technology trades as NYSE:ASX. What does the latest reported period say about capacity and backlog versus the graph position above?

Full diligence pack for ASE Technology

Key products

  • Advanced IC packaging (Fan-Out, Flip-Chip)
  • SiP (System-in-Package) modules
  • Wire-bonding assembly and test
  • CoWoS substrate interposer assembly (with TSMC)
  • Testing services (burn-in, final test)

Suppliers

Customers

More OSAT companies

Compare with

JCET Group · Tongfu Microelectronics · Amkor Technology · King Yuan Electronics (KYEC) · Huatian Technology · Powertech Technology (PTI)

Sources

Open the interactive supply-chain view →

Cite as: wafergraph, “ASE Technology — supply chain, financials & market position”, https://wafergraph.com/company/ase (data as of 2026-09-05).

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