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BIIB icon

InceptionR’s Biogen BIIB Stock Holding History

InceptionR’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 		$272K Sell
1,261
-987
-44% -$189K 0.07% 496
2026
Q1 		$412K Sell
2,248
-2,628
-54% -$484K 0.1% 377
2025
Q4 		$858K Sell
4,876
-426
-8% -$69.6K 0.24% 149
2025
Q3 		$743K Sell
5,302
-4,198
-44% -$567K 0.18% 201
2025
Q2 		$1.19M Buy
9,500
+2,954
+45% +$368K 0.28% 105
2025
Q1 		$896K Buy
6,546
+741
+13% +$106K 0.27% 130
2024
Q4 		$888K Sell
5,805
-889
-13% -$150K 0.2% 191
2024
Q3 		$1.3M Buy
6,694
+3,142
+88% +$657K 0.32% 84
2024
Q2 		$823K Sell
3,552
-2,644
-43% -$575K 0.23% 153
2024
Q1 		$1.34M Buy
6,196
+3,727
+151% +$873K 0.34% 76
2023
Q4 		$639K Sell
2,469
-898
-27% -$221K 0.46% 50
2023
Q3 		$865K Buy
+3,367
New +$901K 0.49% 34

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

InceptionR's BIIB Position: Q2 2026 in Review

InceptionR reduced its Biogen (BIIB) stake by 44% in Q2 2026, selling an estimated $189K and leaving 1,261 shares worth $272K. The position accounts for 0.07% of the portfolio, ranked #496.

InceptionR first reported a position in BIIB in Q3 2023 and has held it in 12 quarters since. The position peaked at $1.34M in Q1 2024. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • InceptionR held 1,261 shares of Biogen worth $272K as of Q2 2026.
  • InceptionR sold 987 Biogen shares in Q2 2026, an estimated $189K.
  • Biogen made up 0.07% of InceptionR's portfolio in Q2 2026, its #496 holding.
  • InceptionR first reported a position in Biogen in Q3 2023 and has held it in 12 quarters since.
  • InceptionR's Biogen position peaked at $1.34M in Q1 2024.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on InceptionR's 13F filing for Q2 2026, filed 11 Aug 2026.