RSCM
ETNB

Rock Springs Capital Management’s 89bio ETNB Stock Holding History

Rock Springs Capital Management’s Portfolio ETNB Stock Details ETNB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-40,000
Closed -$393K – 97
2025
Q2 		$393K Sell
40,000
-804,441
-95% -$6.66M 0.02% 89
2025
Q1 		$6.14M Buy
844,441
+291,700
+53% +$2.55M 0.35% 59
2024
Q4 		$4.32M Buy
+552,741
New +$4.55M 0.16% 81

Other funds holding ETNB

RCM
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PCM
Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
SCM
Suvretta Capital Management New York $3.92B AUM 86.67% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Rock Springs Capital Management's ETNB Position: Q3 2025 in Review

Rock Springs Capital Management sold out of 89bio (ETNB) in Q3 2025, closing a stake of 40,000 shares — an estimated $393K sold.

Rock Springs Capital Management first reported a position in ETNB in Q4 2024 and held it in 3 quarters. The position peaked at $6.14M in Q1 2025. 198 funds tracked by Wall St. Rank hold ETNB as of Q3 2025.

  • Rock Springs Capital Management reported no remaining 89bio position as of Q3 2025 after selling out during the quarter.
  • Rock Springs Capital Management sold 40,000 89bio shares in Q3 2025, an estimated $393K.
  • Rock Springs Capital Management first reported a position in 89bio in Q4 2024 and held it in 3 quarters.
  • Rock Springs Capital Management's 89bio position peaked at $6.14M in Q1 2025.
  • 198 funds tracked by Wall St. Rank held 89bio as of Q3 2025.

Based on Rock Springs Capital Management's 13F filing for Q3 2025, filed 14 Nov 2025.