Definitive Healthcare
121 hedge funds and large institutions have $382M invested in Definitive Healthcare in 2025 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 46 increasing their positions, 37 reducing their positions, and 35 closing their positions.
29% more capital invested
Capital invested by funds: $295M → $382M (+$86.6M)
24% more repeat investments, than reductions
Existing positions increased: 46 | Existing positions reduced: 37
0.73% more ownership
Funds ownership: 90.54% → 91.26% (+0.73%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
11% less funds holding
Funds holding: 136 → 121 (-15)
37% less first-time investments, than exits
New positions opened: 22 | Existing positions closed: 35
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$3.43M |
| 2 |
D.E. Shaw & Co
New York
|
+$1.69M |
| 3 |
Renaissance Technologies
New York
|
+$1.27M |
| 4 |
Morgan Stanley
New York
|
+$724K |
| 5 |
Millennium Management
New York
|
+$713K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$9.07M |
| 2 |
BlackRock
New York
|
-$3.05M |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
-$2.85M |
| 4 |
WCA
Whetstone Capital Advisors
Shawnee Mission,
Kansas
|
-$2.51M |
| 5 |
AG
Algert Global
San Francisco,
California
|
-$622K |
DH Hedge Fund Activity: Q2 2025 in Review
121 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Definitive Healthcare (DH) for Q2 2025, worth a combined $382M — up 29% from $295M a quarter earlier.
Sellers outnumbered buyers: 35 funds closed out of DH and 22 opened new positions — a net loss of 13 holders — while 37 trimmed existing stakes and 46 added.
The largest buyer was Arrowstreet Capital, opening a new position worth an estimated $3.43M. The largest seller was Massachusetts Financial Services, exiting entirely with an estimated $9.07M sold.
- 121 institutional investors held Definitive Healthcare (DH) as of Q2 2025, down from 136 in Q1 2025.
- Funds reported $382M of Definitive Healthcare stock for Q2 2025, up 29% quarter-over-quarter.
- 22 funds opened new Definitive Healthcare positions in Q2 2025 and 35 closed out, a net change of -13 holders.
- The largest Definitive Healthcare buyer in Q2 2025 was Arrowstreet Capital, an estimated $3.43M added.
- The largest Definitive Healthcare seller in Q2 2025 was Massachusetts Financial Services, an estimated $9.07M sold.
Based on aggregated 13F filings for Q2 2025.