Walleye Capital
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Walleye Capital’s Biogen BIIB Stock Holding History

Walleye Capital’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
Q2 		$123K Sell
569
-34,770
-98% -$6.65M ﹤0.01% 3773
2026
Q1 		$6.48M Buy
35,339
+33,764
+2,144% +$6.22M 0.03% 635
2025
Q4 		$277K Sell
1,575
-62
-4% -$10.1K ﹤0.01% 3365
2025
Q3 		$229K Sell
1,637
-2,318
-59% -$313K ﹤0.01% 3229
2025
Q2 		$497K Sell
3,955
-65,950
-94% -$8.22M ﹤0.01% 2641
2025
Q1 		$9.57M Buy
69,905
+59,865
+596% +$8.56M 0.04% 462
2024
Q4 		$1.54M Buy
10,040
+5,387
+116% +$909K ﹤0.01% 2022
2024
Q3 		$902K Sell
4,653
-42,642
-90% -$8.92M ﹤0.01% 2759
2024
Q2 		$11M Buy
47,295
+37,711
+393% +$8.2M 0.02% 695
2024
Q1 		$2.07M Buy
+9,584
New +$2.24M ﹤0.01% 1974
2023
Q4 		– Sell
-1,438
Closed -$353K – 4947
2023
Q3 		$370K Sell
1,438
-13,250
-90% -$3.54M ﹤0.01% 3054
2023
Q2 		$4.18M Buy
14,688
+994
+7% +$296K 0.02% 845
2023
Q1 		$3.81M Sell
13,694
-20,803
-60% -$5.76M 0.06% 414
2022
Q4 		$9.55M Buy
+34,497
New +$9.74M 0.17% 128
2022
Q2 		– Sell
-1,685
Closed -$355K – 2367
2022
Q1 		$355K Buy
+1,685
New +$366K 0.01% 1204
2020
Q2 		– Sell
-180
Closed -$57K – 626
2020
Q1 		$57K Sell
180
-30
-14% -$9.1K 0.01% 674
2019
Q4 		$62K Sell
210
-3,342
-94% -$927K ﹤0.01% 1476
2019
Q3 		$827K Buy
3,552
+3,392
+2,120% +$790K 0.05% 522
2019
Q2 		$37K Buy
+160
New +$36.9K ﹤0.01% 1435
2018
Q3 		$562K Buy
+1,591
New +$548K 0.26% 113

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Walleye Capital's BIIB Position: Q2 2026 in Review

Walleye Capital reduced its Biogen (BIIB) stake by 98% in Q2 2026, selling an estimated $6.65M and leaving 569 shares worth $123K. The position accounts for ﹤0.01% of the portfolio, ranked #3773.

Walleye Capital first reported a position in BIIB in Q3 2018 and has held it in 20 quarters since. The position peaked at $11M in Q2 2024. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Walleye Capital held 569 shares of Biogen worth $123K as of Q2 2026.
  • Walleye Capital sold 34,770 Biogen shares in Q2 2026, an estimated $6.65M.
  • Biogen made up ﹤0.01% of Walleye Capital's portfolio in Q2 2026, its #3773 holding.
  • Walleye Capital first reported a position in Biogen in Q3 2018 and has held it in 20 quarters since.
  • Walleye Capital's Biogen position peaked at $11M in Q2 2024.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Walleye Capital's 13F filing for Q2 2026, filed 3 Aug 2026.