89bio
ETNB
ETNB was delisted on the 29th of October, 2025.
186 hedge funds and large institutions have $1.14B invested in 89bio in 2025 Q1 according to their latest regulatory filings, with 53 funds opening new positions, 91 increasing their positions, 33 reducing their positions, and 22 closing their positions.
176% more repeat investments, than reductions
Existing positions increased: 91 | Existing positions reduced: 33
141% more first-time investments, than exits
New positions opened: 53 | Existing positions closed: 22
50% more funds holding in top 10
Funds holding in top 10: 2 → 3 (+1)
20% more capital invested
Capital invested by funds: $949M → $1.14B (+$190M)
20% more funds holding
Funds holding: 155 → 186 (+31)
2.59% more ownership
Funds ownership: 103.14% → 105.72% (+2.6%)
60% less call options, than puts
Call options by funds: $3.12M | Put options by funds: $7.7M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
RA Capital Management
Boston,
Massachusetts
|
+$50M |
| 2 |
SCM
Suvretta Capital Management
New York
|
+$36.1M |
| 3 |
Janus Henderson Group
London,
United Kingdom
|
+$34.5M |
| 4 |
DTC
Deep Track Capital
Greenwich,
Connecticut
|
+$24.8M |
| 5 |
LGM
Logos Global Management
San Francisco,
California
|
+$21.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RI
RTW Investments
New York
|
-$48.2M |
| 2 |
BI
BVF Inc
San Francisco,
California
|
-$33.9M |
| 3 |
FLSM
Frazier Life Sciences Management
Palo Alto,
California
|
-$7.82M |
| 4 |
AllianceBernstein
Nashville,
Tennessee
|
-$7.77M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
-$5.97M |
ETNB Hedge Fund Activity: Q1 2025 in Review
186 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in 89bio (ETNB) for Q1 2025, worth a combined $1.14B — up 20% from $949M a quarter earlier.
Buyers outnumbered sellers: 53 funds opened new ETNB positions and 22 closed out — a net gain of 31 holders — while 91 added to existing stakes and 33 trimmed.
The largest buyer was RA Capital Management, adding an estimated $50M. The largest seller was RTW Investments, cutting an estimated $48.2M.
- 186 institutional investors held 89bio (ETNB) as of Q1 2025, up from 155 in Q4 2024.
- Funds reported $1.14B of 89bio stock for Q1 2025, up 20% quarter-over-quarter.
- 53 funds opened new 89bio positions in Q1 2025 and 22 closed out, a net change of +31 holders.
- The largest 89bio buyer in Q1 2025 was RA Capital Management, an estimated $50M added.
- The largest 89bio seller in Q1 2025 was RTW Investments, an estimated $48.2M sold.
Based on aggregated 13F filings for Q1 2025.