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Top Security Information and Event Management (SIEM) companies in United States - October, 2026
Listed below are the top companies in US - All States by revenue as of October 2026. With $23B in revenue, Allied Universal is
ranked first on the list, followed by Securitas USA
with $19.7B in revenue and CSC
with $12.3B in revenue.
Find additional information about companies in US - All States such as their contact details,
employees, location, org chart, news and much more.
Security Information and Event Management (SIEM) , Business Services
Chicago, Illinois, United States
$2B
5K - 10K
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Frequently Asked Questions Regarding Top Security Information and Event Management (SIEM) companies in United States - October, 2026
Is Allied Universal the biggest company in the world? Allied Universal is the top company in US - All States by revenue, with $23B in revenue Is Securitas USA the biggest company in the world? Securitas USA is the second largest company in US - All States by revenue, with $19.7B in revenue Is Allied Universal the largest company by revenue? Allied Universal is the largest company by revenue, with $23B in revenue What is Allied Universal's revenue? Allied Universal's revenue is $23B What is Securitas USA's revenue? Securitas USA's revenue is $19.7B What is CSC's revenue? CSC's revenue is $12.3B