89bio
ETNB
ETNB was delisted on the 29th of October, 2025.
198 hedge funds and large institutions have $2.27B invested in 89bio in 2025 Q3 according to their latest regulatory filings, with 57 funds opening new positions, 58 increasing their positions, 63 reducing their positions, and 41 closing their positions.
175% more funds holding in top 10
Funds holding in top 10: 4 → 11 (+7)
44% more capital invested
Capital invested by funds: $1.58B → $2.27B (+$690M)
39% more first-time investments, than exits
New positions opened: 57 | Existing positions closed: 41
8% more funds holding
Funds holding: 184 → 198 (+14)
8% less repeat investments, than reductions
Existing positions increased: 58 | Existing positions reduced: 63
6.12% less ownership
Funds ownership: 110.42% → 104.3% (-6.1%)
80% less call options, than puts
Call options by funds: $20.3M | Put options by funds: $101M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PCM
Pentwater Capital Management
Naples,
Florida
|
+$120M |
| 2 |
Adage Capital Partners
Boston,
Massachusetts
|
+$72.7M |
| 3 |
GCL
Glazer Capital LLC
New York
|
+$57.5M |
| 4 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
+$34.8M |
| 5 |
SCS
Syquant Capital SAS
Paris,
France
|
+$26.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Janus Henderson Group
London,
United Kingdom
|
-$157M |
| 2 |
SCM
Suvretta Capital Management
New York
|
-$60.4M |
| 3 |
Pictet Asset Management
Carouge,
Switzerland
|
-$41M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$37.6M |
| 5 |
Holocene Advisors
New York
|
-$30.1M |
ETNB Hedge Fund Activity: Q3 2025 in Review
198 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in 89bio (ETNB) for Q3 2025, worth a combined $2.27B — up 44% from $1.58B a quarter earlier.
Buyers outnumbered sellers: 57 funds opened new ETNB positions and 41 closed out — a net gain of 16 holders — while 58 added to existing stakes and 63 trimmed.
The largest buyer was Pentwater Capital Management, opening a new position worth an estimated $120M. The largest seller was Janus Henderson Group, cutting an estimated $157M.
- 198 institutional investors held 89bio (ETNB) as of Q3 2025, up from 184 in Q2 2025.
- Funds reported $2.27B of 89bio stock for Q3 2025, up 44% quarter-over-quarter.
- 57 funds opened new 89bio positions in Q3 2025 and 41 closed out, a net change of +16 holders.
- The largest 89bio buyer in Q3 2025 was Pentwater Capital Management, an estimated $120M added.
- The largest 89bio seller in Q3 2025 was Janus Henderson Group, an estimated $157M sold.
Based on aggregated 13F filings for Q3 2025.