Welsh, Carson, Anderson & Stowe (WCAS) is a leading U.S. private equity firm focused on two target industries: healthcare and technology. Founded in 1979 and based in New York, the firm partners with management teams to acquire growing companies and drive value through operational improvements, growth initiatives, and strategic acquisitions.
They made 1 investment in the last 12 months. Average disclosed round size is $497.5M (across 4 rounds with reported amounts).
Portfolio
7
Fund Size
$5.0B
Top Stage
Unknown
Last 12 Mo
1
Team
D. Scott Mackesy
Managing Partner
Christopher W. Solomon
General Partner & Director of Capital Markets
Jonathan M. Rather
General Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
7 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Honest Health | Unknown | $140M | Feb 2026 |
 Shields Health Solutions | Growth | — | Jan 2022 |
| VValtruis | Unknown | $300M | Aug 2021 |
| CCuro Health Services | Unknown | $1.4B | Jan 2018 |
 Valeritas | Unknown | $150M | Sep 2011 |
 Clearwater Analytics | Growth | — | — |
| SSimplr | Series A | — | — |
Top Co-Investors
Durable Capital Partners2 shared
HLM Investment Partners1 shared
Kaiser Permanente Ventures1 shared
MPM Capital1 shared
Abingworth LLP1 shared
Advanced Technology Ventures1 shared
HLM Venture Partners1 shared
HPS Investment Partners, LLC1 shared
GTCR1 shared
Humana1 shared
K2 HealthVentures1 shared
Rubicon Founders1 shared
Oak HC/FT1 shared
NewSpring1 shared
Permira1 shared
Warburg Pincus LLC1 shared
Decelera Ventures1 shared
Berkshire Partners1 shared
Providence Ventures1 shared
Last updated: 27 September 2026