ReliaQuest Secures $500M in Funding, Soars to $3.4B Valuation

ReliaQuest Secures $500M in Funding, Soars to $3.4B Valuation

At a glance

• ReliaQuest raised more than $500 million in a new funding round.
• The round values the company at $3.4 billion.
• EQT led the round, with KKR, FTV Capital, Ten Eleven Ventures and others taking part.
• The money will fund AI automation and international growth.
• ReliaQuest sells security operations through its GreyMatter platform.

The funding round

ReliaQuest announced on March 31, 2025 that it had raised more than $500 million. The round values the Tampa-based company at $3.4 billion. It was one of the largest private rounds for a security operations company that year, and investors are betting that ReliaQuest’s heavy use of AI can make security operations cheaper and faster for large companies that cannot hire enough analysts.

Who invested

The round was led by EQT, with participation from existing investors KKR and FTV Capital, and from Ten Eleven Ventures and Finback Investment Partners. That mix of private equity and specialist security investors shows broad confidence in the company and in demand for outsourced security operations.

What ReliaQuest will do with the money

ReliaQuest plans to use the money to expand internationally and add more AI-driven automation to its GreyMatter platform. GreyMatter connects a customer’s existing security tools and helps teams detect, investigate and respond to threats. Speed is the pitch. Attacks are getting more sophisticated, and many security teams cannot hire fast enough to keep up.

Why investors are betting on security operations

The investment reflects confidence in ReliaQuest’s products. It also reflects a broader view. Companies need help with the flood of alerts their tools produce every day, and ReliaQuest sells its automated security operations as an alternative to building a large in-house team.

CEO’s Vision and Company Mission

ReliaQuest’s leadership presents security as something that should help a business run, not slow it down. The company argues for an integrated approach in which security tools work together and automation handles routine tasks, leaving analysts to focus on the hardest problems.

What to watch next

A $3.4 billion valuation puts ReliaQuest among the most valuable privately held security companies. That is a high bar. Customers face more complex attacks every year and want partners that can handle the daily work of detection and response.

The next test is execution. ReliaQuest has to turn the new money into better automation and new international customers. If it does, it will be one of the companies shaping how security operations are run.

Fred Templeton, CISA, CASP, SEC+

Fred Templeton is a practicing Information Systems Auditor in the Washington DC area. Fred works as a government contractor and uses his skills in cyber security to make our country's information systems safer from cyber threats. Fred holds a master's degree in cybersecurity and is currently working on his PHD in Information Systems.