Welsh, Carson, Anderson & Stowe Acquires Majority Stake in GovernmentCIO

Welsh, Carson, Anderson & Stowe Acquires Majority Stake in EquiLend

January 18, 2024

Financial Services

Welsh, Carson, Anderson & Stowe (WCAS) has completed its majority acquisition of EquiLend, a global financial technology, data and analytics provider for the securities finance industry, following regulatory approvals in the U.S., UK and Ireland. Founding shareholders and customers — including Bank of America, BlackRock, Goldman Sachs, Morgan Stanley, National Bank of Canada, State Street and UBS — joined WCAS as owners; WCAS previously committed $200 million to support EquiLend's organic growth and acquisitions.

Welsh, Carson, Anderson & Stowe Invests in Constitution Surgery Alliance

June 16, 2025

Healthcare Services

Welsh, Carson, Anderson & Stowe (WCAS) has made a strategic growth investment in Constitution Surgery Alliance (CSA), an independent developer and operator of ambulatory surgery centers. The investment will provide capital and healthcare scaling expertise to help CSA expand nationally; CSA currently manages 16 facilities across five states and performs over 100,000 procedures annually.

Welsh, Carson, Anderson & Stowe Makes Strategic Growth Investment in ImageTrend, Inc.

February 10, 2023

Software

Welsh, Carson, Anderson & Stowe (WCAS) made an equity growth investment in ImageTrend, Inc., a market-leading provider of public safety and healthcare software, to accelerate growth and product innovation. WCAS partners with ImageTrend’s management and will add investment team members to the board to support continued expansion of the company’s software, analytics, and services across EMS, hospitals, fire, and public safety end markets.

Welsh, Carson, Anderson & Stowe Acquires Majority Stake in AIA Contract Documents

July 9, 2025

Cloud & SaaS

Welsh, Carson, Anderson & Stowe (WCAS) has made a majority investment in AIA Contract Documents (ACD), the leading risk-management and contract workflow platform for the architecture, engineering, and construction (AEC) industry. WCAS is partnering with The American Institute of Architects (AIA) and existing investor True Wind Capital, which will remain investors and strategic partners; terms were not disclosed.

Welsh, Carson, Anderson & Stowe Acquires Green Street Advisors from Golden Gate Capital

June 3, 2019

Data & Analytics

Welsh, Carson, Anderson & Stowe (WCAS) has signed a definitive agreement to acquire Green Street Advisors from Golden Gate Capital. Management will reinvest and WCAS plans to accelerate organic growth, invest in product innovation and pursue strategic M&A to expand Green Street's research, data and analytics offerings for the commercial real estate market.

Welsh, Carson, Anderson & Stowe Acquires Argos Health

September 23, 2021

Healthcare Services

Welsh, Carson, Anderson & Stowe (WCAS) completed the acquisition of Argos Health, a provider of complex claims revenue cycle services for hospitals, health systems and physician groups. WCAS said it will scale Argos organically and via acquisitions to build a specialized revenue integrity platform and drive greater automation and growth.