89bio
ETNB
ETNB was delisted on the 29th of October, 2025.
153 hedge funds and large institutions have $1.07B invested in 89bio in 2023 Q4 according to their latest regulatory filings, with 33 funds opening new positions, 70 increasing their positions, 41 reducing their positions, and 40 closing their positions.
71% more repeat investments, than reductions
Existing positions increased: 70 | Existing positions reduced: 41
10.04% more ownership
Funds ownership: 95.34% → 105.38% (+10%)
4% less capital invested
Capital invested by funds: $1.11B → $1.07B (-$42.6M)
4% less funds holding
Funds holding: 160 → 153 (-7)
18% less first-time investments, than exits
New positions opened: 33 | Existing positions closed: 40
49% less call options, than puts
Call options by funds: $8.29M | Put options by funds: $16.2M
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RI
RTW Investments
New York
|
+$51.3M |
| 2 |
Janus Henderson Group
London,
United Kingdom
|
+$44.9M |
| 3 |
Morgan Stanley
New York
|
+$21.9M |
| 4 |
BI
BVF Inc
San Francisco,
California
|
+$20.2M |
| 5 |
SCM
Suvretta Capital Management
New York
|
+$20.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
B
Braidwell
Stamford,
Connecticut
|
-$24.6M |
| 2 |
OCA
Octagon Capital Advisors
New York
|
-$18.8M |
| 3 |
Alkeon Capital Management
New York
|
-$10.8M |
| 4 |
Victory Capital Management
San Antonio,
Texas
|
-$8.58M |
| 5 |
AGP
Artia Global Partners
Miami,
Florida
|
-$7.19M |
ETNB Hedge Fund Activity: Q4 2023 in Review
153 of the 6,860 institutional investors tracked by Wall St. Rank reported a position in 89bio (ETNB) for Q4 2023, worth a combined $1.07B — down 3.8% from $1.11B a quarter earlier.
Sellers outnumbered buyers: 40 funds closed out of ETNB and 33 opened new positions — a net loss of 7 holders — while 41 trimmed existing stakes and 70 added.
The largest buyer was RTW Investments, opening a new position worth an estimated $51.3M. The largest seller was Braidwell, exiting entirely with an estimated $24.6M sold.
- 153 institutional investors held 89bio (ETNB) as of Q4 2023, down from 160 in Q3 2023.
- Funds reported $1.07B of 89bio stock for Q4 2023, down 3.8% quarter-over-quarter.
- 33 funds opened new 89bio positions in Q4 2023 and 40 closed out, a net change of -7 holders.
- The largest 89bio buyer in Q4 2023 was RTW Investments, an estimated $51.3M added.
- The largest 89bio seller in Q4 2023 was Braidwell, an estimated $24.6M sold.
Based on aggregated 13F filings for Q4 2023.