Welsh, Carson, Anderson & Stowe | 10,455 followers on LinkedIn. WCAS is a leading U.S. private equity firm focused on two target industries: technology and healthcare. Since its founding in 1979, the firm's strategy has been to partner with outstanding management teams and build value for its investors through a combination of operational improvements, growth initiatives and strategic acquisitions. WCAS has deep experience in acquiring founder-led businesses and corporate carve-outs.