Capital Fund Management (CFM)
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Capital Fund Management (CFM)’s Biogen BIIB Stock Holding History

Capital Fund Management (CFM)’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 		$3.13M Sell
17,100
-44,800
-72% -$8.25M 0.01% 1142
2025
Q4 		$10.9M Sell
61,900
-28,700
-32% -$4.69M 0.03% 783
2025
Q3 		$12.7M Sell
90,600
-84,900
-48% -$11.5M 0.03% 711
2025
Q2 		$22M Sell
175,500
-234,400
-57% -$29.2M 0.06% 427
2025
Q1 		$56.1M Buy
409,900
+286,400
+232% +$40.9M 0.16% 175
2024
Q4 		$18.9M Buy
123,500
+57,700
+88% +$9.73M 0.05% 498
2024
Q3 		$12.8M Sell
65,800
-14,700
-18% -$3.08M 0.03% 627
2024
Q2 		$18.7M Sell
80,500
-7,500
-9% -$1.63M 0.05% 437
2024
Q1 		$19M Buy
88,000
+2,900
+3% +$679K 0.05% 473
2023
Q4 		$22M Buy
85,100
+62,900
+283% +$15.4M 0.06% 420
2023
Q3 		$5.71M Buy
+22,200
New +$5.94M 0.02% 854
2023
Q2 		– Sell
-11,800
Closed -$3.28M – 1682
2023
Q1 		$3.28M Buy
+11,800
New +$3.27M 0.02% 893
2022
Q4 		– Sell
-15,500
Closed -$4.14M – 1405
2022
Q3 		$4.14M Sell
15,500
-23,400
-60% -$4.97M 0.03% 621
2022
Q2 		$7.93M Sell
38,900
-12,000
-24% -$2.45M 0.07% 381
2022
Q1 		$10.7M Buy
+50,900
New +$11.1M 0.09% 317
2020
Q2 		– Sell
-12,100
Closed -$3.83M – 1057
2020
Q1 		$3.83M Buy
12,100
+11,100
+1,110% +$3.37M 0.06% 357
2019
Q4 		$297K Buy
+1,000
New +$277K ﹤0.01% 1603
2019
Q3 		– Sell
-14,400
Closed -$3.37M – 1664
2019
Q2 		$3.37M Sell
14,400
-6,200
-30% -$1.43M 0.03% 644
2019
Q1 		$4.87M Sell
20,600
-31,900
-61% -$10M 0.04% 507
2018
Q4 		$15.8M Sell
52,500
-62,400
-54% -$19.9M 0.14% 186
2018
Q3 		$40.6M Sell
114,900
-70,300
-38% -$24.2M 0.22% 101
2018
Q2 		$53.8M Buy
185,200
+26,000
+16% +$7.31M 0.28% 83
2018
Q1 		$43.6M Buy
159,200
+118,300
+289% +$36.7M 0.26% 93
2017
Q4 		$13M Buy
40,900
+25,800
+171% +$8.28M 0.07% 330
2017
Q3 		$4.73M Buy
+15,100
New +$4.47M 0.03% 553
2017
Q1 		– Sell
-15,200
Closed -$4.31M – 1467
2016
Q4 		$4.31M Sell
15,200
-2,100
-12% -$622K 0.04% 541
2016
Q3 		$5.42M Buy
17,300
+12,500
+260% +$3.7M 0.05% 441
2016
Q2 		$1.16M Sell
4,800
-300
-6% -$79.1K 0.01% 909
2016
Q1 		$1.33M Sell
5,100
-137,400
-96% -$36.3M 0.01% 806
2015
Q4 		$43.7M Buy
142,500
+133,800
+1,538% +$38.4M 0.45% 41
2015
Q3 		$2.54M Buy
8,700
+2,000
+30% +$660K 0.03% 548
2015
Q2 		$2.71M Sell
6,700
-2,100
-24% -$843K 0.03% 521
2015
Q1 		$3.72M Sell
8,800
-19,900
-69% -$7.84M 0.05% 421
2014
Q4 		$9.74M Sell
28,700
-24,800
-46% -$8.02M 0.12% 242
2014
Q3 		$17.7M Sell
53,500
-54,200
-50% -$17.9M 0.2% 122
2014
Q2 		$34M Sell
107,700
-40,300
-27% -$12.1M 0.36% 47
2014
Q1 		$45.3M Buy
148,000
+54,300
+58% +$17.2M 0.55% 10
2013
Q4 		$26.2M Buy
93,700
+13,200
+16% +$3.41M 0.32% 35
2013
Q3 		$19.4M Buy
80,500
+77,100
+2,268% +$17.3M 0.27% 75
2013
Q2 		$732K Buy
+3,400
New +$727K 0.01% 883

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

Capital Fund Management (CFM)'s BIIB Position: Q4 2025 in Review

Capital Fund Management (CFM) sold out of Biogen (BIIB) in Q4 2025, closing a stake of 47,727 shares — an estimated $7.8M sold.

Capital Fund Management (CFM) first reported a position in BIIB in Q2 2013 and held it in 31 quarters. The position peaked at $36.8M in Q4 2024. 997 funds tracked by Wall St. Rank hold BIIB as of Q4 2025.

  • Capital Fund Management (CFM) reported no remaining Biogen position as of Q4 2025 after selling out during the quarter.
  • Capital Fund Management (CFM) sold 47,727 Biogen shares in Q4 2025, an estimated $7.8M.
  • Capital Fund Management (CFM) first reported a position in Biogen in Q2 2013 and held it in 31 quarters.
  • Capital Fund Management (CFM)'s Biogen position peaked at $36.8M in Q4 2024.
  • 997 funds tracked by Wall St. Rank held Biogen as of Q4 2025.

Based on Capital Fund Management (CFM)'s 13F filing for Q4 2025, filed 17 Feb 2026.