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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
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

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

InceptionR's BIIB Position: Q1 2026 in Review

InceptionR reduced its Biogen (BIIB) stake by 54% in Q1 2026, selling an estimated $484K and leaving 2,248 shares worth $412K. The position accounts for 0.1% of the portfolio, ranked #377.

InceptionR first reported a position in BIIB in Q3 2023 and has held it in 11 quarters since. The position peaked at $1.34M in Q1 2024. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • InceptionR held 2,248 shares of Biogen worth $412K as of Q1 2026.
  • InceptionR sold 2,628 Biogen shares in Q1 2026, an estimated $484K.
  • Biogen made up 0.1% of InceptionR's portfolio in Q1 2026, its #377 holding.
  • InceptionR first reported a position in Biogen in Q3 2023 and has held it in 11 quarters since.
  • InceptionR's Biogen position peaked at $1.34M in Q1 2024.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on InceptionR's 13F filing for Q1 2026, filed 14 May 2026.