AC
ETNB

Aaron Cowen’s 89bio ETNB Stock Holding History

Aaron Cowen’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
Q4 		– Sell
-8,280,000
Closed -$122M – 96
2025
Q3 		$122M Sell
8,280,000
-5,930,000
-42% -$60.4M 3.12% 6
2025
Q2 		$140M Sell
14,210,000
-125,244
-0.9% -$1.04M 4.21% 4
2025
Q1 		$104M Buy
14,335,244
+4,132,548
+41% +$36.1M 3.87% 7
2024
Q4 		$79.8M Buy
10,202,696
+2,211,052
+28% +$18.2M 2.72% 9
2024
Q3 		$59.1M Sell
7,991,644
-40,201
-0.5% -$338K 1.89% 14
2024
Q2 		$64.3M Buy
8,031,845
+1,733,841
+28% +$15.5M 2.36% 13
2024
Q1 		$73.3M Buy
6,298,004
+1,409,570
+29% +$15.6M 2.72% 10
2023
Q4 		$54.6M Buy
4,888,434
+2,194,030
+81% +$20.2M 2.47% 13
2023
Q3 		$41.6M Buy
2,694,404
+301,168
+13% +$5.06M 2.25% 14
2023
Q2 		$45.4M Buy
2,393,236
+182,700
+8% +$3.21M 2.42% 11
2023
Q1 		$33.7M Buy
+2,210,536
New +$28.8M 1.42% 28

Other funds holding ETNB

DekaBank Deutsche Girozentrale
DekaBank Deutsche Girozentrale Frankfurt, Germany $59.2B AUM 26.02% 1-Year Est. Return
IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

Aaron Cowen's ETNB Position: Q4 2025 in Review

Aaron Cowen sold out of 89bio (ETNB) in Q4 2025, closing a stake of 8,280,000 shares — an estimated $122M sold.

Aaron Cowen first reported a position in ETNB in Q1 2023 and held it in 11 quarters. The position peaked at $140M in Q2 2025. 2 funds tracked by Wall St. Rank hold ETNB as of Q4 2025.

  • Aaron Cowen reported no remaining 89bio position as of Q4 2025 after selling out during the quarter.
  • Aaron Cowen sold 8,280,000 89bio shares in Q4 2025, an estimated $122M.
  • Aaron Cowen first reported a position in 89bio in Q1 2023 and held it in 11 quarters.
  • Aaron Cowen's 89bio position peaked at $140M in Q2 2025.
  • 2 funds tracked by Wall St. Rank held 89bio as of Q4 2025.

Based on Suvretta Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.