Operational Intensity.
Middle-Market Focus.
Deep Technology Expertise.

Since 2011, Siris has raised $6.2 billion of committed capital across four institutional funds and has made about 20 platform investments and about 40 add-on acquisitions in technology and technology-enabled services companies.* The firm’s investment team and Operating Partners help build companies, add value and sell them to strategic buyers. Siris’ portfolio companies, current and realized, are shown on the Portfolio page.

In October 2026, Siris announced the creation of October Capital, a private equity firm dedicated to investing in services businesses that enable enterprises to adopt and scale transformative technologies. Learn more at octobercapital.com.

Our portfolio consists of companies providing services across the tech and tech-enabled services landscape.

Combining investment acumen and hands-on operating expertise.