Cullinan Oncology
CGEM
148 hedge funds and large institutions have $490M invested in Cullinan Oncology in 2025 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 44 increasing their positions, 51 reducing their positions, and 23 closing their positions.
1% more funds holding
Funds holding: 146 → 148 (+2)
9% more first-time investments, than exits
New positions opened: 25 | Existing positions closed: 23
1.54% less ownership
Funds ownership: 111.13% → 109.58% (-1.5%)
14% less repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 51
26% less call options, than puts
Call options by funds: $142K | Put options by funds: $193K
39% less capital invested
Capital invested by funds: $799M → $490M (-$309M)
44% less funds holding in top 10
Funds holding in top 10: 9 → 5 (-4)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LCM
Lynx1 Capital Management
San Juan,
Puerto Rico
|
+$18.8M |
| 2 |
KCM
Kynam Capital Management
Princeton,
New Jersey
|
+$10.4M |
| 3 |
DM
Deerfield Management
New York
|
+$4.62M |
| 4 |
Bank of America
Charlotte,
North Carolina
|
+$3.54M |
| 5 |
TCM
Tang Capital Management
San Diego,
California
|
+$1.92M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Adage Capital Partners
Boston,
Massachusetts
|
-$12.6M |
| 2 |
BCM
Boxer Capital Management
San Diego,
California
|
-$11.1M |
| 3 |
FCMV
Foresite Capital Management V
Larkspur,
California
|
-$8.01M |
| 4 |
Ameriprise
Minneapolis,
Minnesota
|
-$6.14M |
| 5 |
State Street
Boston,
Massachusetts
|
-$3.57M |
CGEM Hedge Fund Activity: Q1 2025 in Review
148 of the 7,472 institutional investors tracked by Wall St. Rank reported a position in Cullinan Oncology (CGEM) for Q1 2025, worth a combined $490M — down 39% from $799M a quarter earlier.
Buyers outnumbered sellers: 25 funds opened new CGEM positions and 23 closed out — a net gain of 2 holders — while 44 added to existing stakes and 51 trimmed.
The largest buyer was Lynx1 Capital Management, adding an estimated $18.8M. The largest seller was Adage Capital Partners, exiting entirely with an estimated $12.6M sold.
- 148 institutional investors held Cullinan Oncology (CGEM) as of Q1 2025, up from 146 in Q4 2024.
- Funds reported $490M of Cullinan Oncology stock for Q1 2025, down 39% quarter-over-quarter.
- 25 funds opened new Cullinan Oncology positions in Q1 2025 and 23 closed out, a net change of +2 holders.
- The largest Cullinan Oncology buyer in Q1 2025 was Lynx1 Capital Management, an estimated $18.8M added.
- The largest Cullinan Oncology seller in Q1 2025 was Adage Capital Partners, an estimated $12.6M sold.
Based on aggregated 13F filings for Q1 2025.