A breakdown of the 467 companies running IBM z Systems.
Top industries
Information technology and services221
Financial services92
Professional and business services52
Media and telecommunications19
Health and wellness12
Education and training11
Industrial and manufacturing9
Government and public services8
No industry recorded: 14
Company size
1–1032 (7%)
11–5055 (13%)
51–25094 (22%)
251–50036 (8%)
501–1,00017 (4%)
1,001–5,00056 (13%)
5,001–10,00029 (7%)
10,001+117 (27%)
Share of companies with a recorded size, by employees.
No size recorded: 31
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Frequently asked questions
About the IBM z Systems data on this page.
How many companies use IBM z Systems?
Firmable holds confirmed IBM z Systems detections for 467 distinct companies, 127 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use IBM z Systems?
Diné Development Corporation, Imt Insurance and Illinois State Comptroller are among the most prominent in the current set.
What industries use IBM z Systems?
Information technology and services, financial services and professional and business services lead the set, across 18 industries in total.
What size companies use IBM z Systems?
Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.
Where are IBM z Systems users based?
The United States, Australia, Canada and Indonesia account for most detections, across 13 countries.
How current is this data?
127 companies were confirmed in the last 90 days. Last detection 20 September 2026.
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