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Aquatic Capital Management’s Biogen BIIB Stock Holding History

Aquatic Capital Management’s Portfolio BIIB Stock Details BIIB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-2,909
Closed -$512K – 1382
2025
Q4 		$512K Buy
+2,909
New +$475K 0.01% 727
2025
Q3 		– Sell
-2,792
Closed -$351K – 1392
2025
Q2 		$351K Sell
2,792
-32,440
-92% -$4.04M 0.01% 907
2025
Q1 		$4.82M Sell
35,232
-29,713
-46% -$4.25M 0.12% 219
2024
Q4 		$9.93M Buy
64,945
+10,845
+20% +$1.83M 0.27% 91
2024
Q3 		$10.5M Buy
+54,100
New +$11.3M 0.27% 98
2024
Q2 		– Sell
-80,500
Closed -$17.4M – 1242
2024
Q1 		$17.4M Buy
80,500
+73,700
+1,084% +$17.3M 0.57% 44
2023
Q4 		$1.76M Buy
6,800
+5,920
+673% +$1.45M 0.04% 359
2023
Q3 		$226K Sell
880
-7,520
-90% -$2.01M 0.01% 652
2023
Q2 		$2.39M Buy
+8,400
New +$2.5M 0.13% 173
2023
Q1 		– Sell
-34,700
Closed -$9.61M – 1281
2022
Q4 		$9.61M Buy
+34,700
New +$9.8M 0.7% 17
2022
Q3 		– Sell
-4,500
Closed -$918K – 1189
2022
Q2 		$918K Buy
+4,500
New +$920K 0.3% 89
2022
Q1 		– Sell
-1,200
Closed -$288K – 1101
2021
Q4 		$288K Buy
+1,200
New +$309K 0.56% 16

Other funds holding BIIB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Aquatic Capital Management's BIIB Position: Q1 2026 in Review

Aquatic Capital Management sold out of Biogen (BIIB) in Q1 2026, closing a stake of 2,909 shares — an estimated $512K sold.

Aquatic Capital Management first reported a position in BIIB in Q4 2021 and held it in 12 quarters. The position peaked at $17.4M in Q1 2024. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Aquatic Capital Management reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Aquatic Capital Management sold 2,909 Biogen shares in Q1 2026, an estimated $512K.
  • Aquatic Capital Management first reported a position in Biogen in Q4 2021 and held it in 12 quarters.
  • Aquatic Capital Management's Biogen position peaked at $17.4M in Q1 2024.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Aquatic Capital Management's 13F filing for Q1 2026, filed 15 May 2026.