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TwinBeech Capital’s Biogen BIIB Stock Holding History

TwinBeech 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 		– Sell
-1,100
Closed -$202K – 397
2026
Q1 		$202K Sell
1,100
-1,734
-61% -$320K 0.02% 515
2025
Q4 		$499K Buy
+2,834
New +$463K 0.04% 402
2025
Q2 		– Sell
-64,253
Closed -$8.79M – 656
2025
Q1 		$8.79M Buy
+64,253
New +$9.19M 0.16% 161
2024
Q4 		– Sell
-61,264
Closed -$11.9M – 627
2024
Q3 		$11.9M Buy
+61,264
New +$12.8M 0.23% 126
2024
Q2 		– Sell
-102,251
Closed -$22M – 540
2024
Q1 		$22M Buy
+102,251
New +$23.9M 0.46% 63
2023
Q4 		– Sell
-816
Closed -$210K – 656
2023
Q3 		$210K Buy
+816
New +$218K ﹤0.01% 598
2023
Q2 		– Sell
-19,311
Closed -$5.37M – 607
2023
Q1 		$5.37M Sell
19,311
-1,541
-7% -$426K 0.11% 230
2022
Q4 		$5.77M Buy
+20,852
New +$5.89M 0.11% 222
2022
Q3 		– Sell
-10,663
Closed -$2.17M – 627
2022
Q2 		$2.17M Sell
10,663
-634
-6% -$130K 0.1% 207
2022
Q1 		$2.38M Buy
11,297
+9,516
+534% +$2.07M 0.1% 219
2021
Q4 		$427K Buy
+1,781
New +$458K 0.02% 439
2020
Q3 		– Sell
-4,009
Closed -$1.07M – 429
2020
Q2 		$1.07M Buy
+4,009
New +$1.21M 0.24% 134

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

TwinBeech Capital's BIIB Position: Q2 2026 in Review

TwinBeech Capital sold out of Biogen (BIIB) in Q2 2026, closing a stake of 1,100 shares — an estimated $202K sold.

TwinBeech Capital first reported a position in BIIB in Q2 2020 and held it in 12 quarters. The position peaked at $22M in Q1 2024. 1,044 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • TwinBeech Capital reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
  • TwinBeech Capital sold 1,100 Biogen shares in Q2 2026, an estimated $202K.
  • TwinBeech Capital first reported a position in Biogen in Q2 2020 and held it in 12 quarters.
  • TwinBeech Capital's Biogen position peaked at $22M in Q1 2024.
  • 1,044 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on TwinBeech Capital's 13F filing for Q2 2026, filed 14 Aug 2026.