Avidity Partners is a Dallas-based investment management firm focused on the healthcare and biotechnology sectors. Founded in 2019, it uses fundamental, bottom-up research to invest in both public and private equities across the healthcare sector globally.
37% of their portfolio is in Biotech & Life Sciences. Average disclosed round size is $155.7M (across 43 rounds with reported amounts).
Portfolio
41
Fund Size
—
Top Stage
Series B
Last 12 Mo
2
Team
MG
Michael Gregory
Managing Partner, Co-Founder
AL
Amy Liu
Managing Director - Biotech VC
HS
Hailey Spencer
Vice President
PC
Peter Chhoy
Biotech Venture Capital
DW
David Witzke
Co-Founder Emeritus
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
46 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Artios Pharma | Series D | $115M | Nov 2025 |
| AArtios | Series D | $115M | Nov 2025 |
 OrganOx | Unknown | $142M | Jan 2025 |
 Sirona Medical | Series C | $42M | Nov 2024 |
 Aktis Oncology | Series B | $175M | Sep 2024 |
 MBrace | Series A | $85M | Nov 2023 |
 Aledade | Growth | — | Jun 2023 |
 Octave | Series C | $52M | Jun 2023 |
 Quanta Therapeutics | Series D | $50.7M | May 2023 |
 MBrace Therapeutics | Series B | $85M | Jan 2023 |
| OOctave Health Group Inc. | Series C | $52M | Jan 2023 |
| UUpStream Healthcare | Series B | $140M | Dec 2022 |
 Upstream | Series B | $140M | Dec 2022 |
 Nested Therapeutics | Series A | $90M | Oct 2022 |
 Innovaccer | Series E | $150M | Dec 2021 |
| Sirona Medical | Series B | $40M | Nov 2021 |
 Elemy | Series B | $219M | Oct 2021 |
 Sonoma Biotherapeutics | Series B | $265M | Aug 2021 |
 Exo Labs | Series C | $220M | Jul 2021 |
| Artios Pharma | Series C | $153M | Jul 2021 |
 Artios Pharma | Series C | $153M | Jul 2021 |
 Affinia | Series B | $110M | May 2021 |
| CCrossover Health | Series D | $168M | Mar 2021 |
 Crossover Health | Series D | $168M | Mar 2021 |
 Amunix | Series B | $117M | Mar 2021 |
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Top Co-Investors
RA Capital Management13 shared
Omega Funds10 shared
Sofinnova Partners10 shared
The Invus Group, LLC9 shared
Perceptive Advisors8 shared
Casdin Capital7 shared
Andera Partners7 shared
Schroders Capital7 shared
SV Health Investors7 shared
M Ventures7 shared
IP Group plc7 shared
Pfizer Ventures7 shared
CaaS Capital7 shared
Venrock7 shared
RTW Investments, LP6 shared
Franklin Templeton6 shared
EQT Life Sciences5 shared
Deep Track Capital5 shared
Soleus Capital5 shared
Last updated: 9 September 2026