AnaptysBio
ANAB
153 hedge funds and large institutions have $743M invested in AnaptysBio in 2025 Q1 according to their latest regulatory filings, with 44 funds opening new positions, 44 increasing their positions, 43 reducing their positions, and 26 closing their positions.
150% more funds holding in top 10
Funds holding in top 10: 2 → 5 (+3)
69% more first-time investments, than exits
New positions opened: 44 | Existing positions closed: 26
58% more capital invested
Capital invested by funds: $469M → $743M (+$274M)
13.89% more ownership
Funds ownership: 116.39% → 130.28% (+14%)
13% more funds holding
Funds holding: 135 → 153 (+18)
11% more call options, than puts
Call options by funds: $5.68M | Put options by funds: $5.12M
2% more repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 43
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$62.8M |
| 2 |
Point72 Asset Management
Stamford,
Connecticut
|
+$39.5M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
+$18.8M |
| 4 |
SI
Sofinnova Investments
Menlo Park,
California
|
+$17.1M |
| 5 |
Citigroup
New York
|
+$17M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FFM
Fairmount Funds Management
West Conshohocken,
Pennsylvania
|
-$24.1M |
| 2 |
FLSM
Frazier Life Sciences Management
Palo Alto,
California
|
-$20.8M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$18.8M |
| 4 |
CCM
Camber Capital Management
Boston,
Massachusetts
|
-$8.34M |
| 5 |
State Street
Boston,
Massachusetts
|
-$7.09M |
ANAB Hedge Fund Activity: Q1 2025 in Review
153 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in AnaptysBio (ANAB) for Q1 2025, worth a combined $743M — up 58% from $469M a quarter earlier.
Buyers outnumbered sellers: 44 funds opened new ANAB positions and 26 closed out — a net gain of 18 holders — while 44 added to existing stakes and 43 trimmed.
The largest buyer was First Light Asset Management, adding an estimated $62.8M. The largest seller was Fairmount Funds Management, exiting entirely with an estimated $24.1M sold.
- 153 institutional investors held AnaptysBio (ANAB) as of Q1 2025, up from 135 in Q4 2024.
- Funds reported $743M of AnaptysBio stock for Q1 2025, up 58% quarter-over-quarter.
- 44 funds opened new AnaptysBio positions in Q1 2025 and 26 closed out, a net change of +18 holders.
- The largest AnaptysBio buyer in Q1 2025 was First Light Asset Management, an estimated $62.8M added.
- The largest AnaptysBio seller in Q1 2025 was Fairmount Funds Management, an estimated $24.1M sold.
Based on aggregated 13F filings for Q1 2025.