Ajax Health is a global investment firm that partners with industry leaders to build and scale high-quality healthcare businesses, with a focus on medical technology, healthcare IT, and healthcare services. The firm has raised successive $100 million funds (Ajax I, II, and 3), with its latest fund, Ajax 3, closing at $100 million; the fund_size_usd field reflects the size of this latest individual fund, not total capital raised across all funds.
Their most common stage is series-a (50% of deals). Average disclosed round size is $33.3M (across 8 rounds with reported amounts).
Portfolio
7
Fund Size
$100M
Top Stage
Series A
Last 12 Mo
0
Team
Joe Koblish
Operating Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
8 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Cortica | Growth | $75M | Apr 2023 |
| CCortica Care | Unknown | $75M | Jan 2023 |
 XII Medical | Series A | $30M | May 2022 |
| PProtaryx | Series A | $5.1M | Jan 2020 |
 Verix Health | Series A | $8M | Oct 2019 |
| EEP Map System | Series A | $25M | Oct 2019 |
 Advanced Cardiac Therapeutics, Inc. | Unknown | $45M | — |
| PProtaryx | Seed | $3.2M | — |
Top Co-Investors
Aperture Venture Partners4 shared
Longitude Capital2 shared
.406 Ventures2 shared
Optum Ventures2 shared
RA Capital Management2 shared
Deerfield2 shared
W Health Ventures1 shared
Quiet Capital1 shared
Undisclosed Angel Investors1 shared
CincyTech1 shared
JobsOhio1 shared
Broadview Ventures1 shared
Cleveland Clinic1 shared
Western Technology Investment1 shared
Keiretsu Forum1 shared
New Enterprise Associates1 shared
Last updated: 8 September 2026