Capital Fund Management (CFM)
BIIB icon

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 		– Sell
-47,500
Closed -$8.36M – 2068
2025
Q4 		$8.36M Sell
47,500
-24,000
-34% -$3.92M 0.02% 920
2025
Q3 		$10M Sell
71,500
-36,700
-34% -$4.96M 0.03% 829
2025
Q2 		$13.6M Sell
108,200
-116,300
-52% -$14.5M 0.04% 609
2025
Q1 		$30.7M Buy
224,500
+137,800
+159% +$19.7M 0.09% 315
2024
Q4 		$13.3M Buy
86,700
+45,100
+108% +$7.61M 0.03% 627
2024
Q3 		$8.06M Sell
41,600
-39,500
-49% -$8.26M 0.02% 800
2024
Q2 		$18.8M Buy
81,100
+50,400
+164% +$11M 0.06% 435
2024
Q1 		$6.62M Sell
30,700
-16,900
-36% -$3.96M 0.02% 918
2023
Q4 		$12.3M Buy
47,600
+31,300
+192% +$7.69M 0.03% 673
2023
Q3 		$4.19M Buy
+16,300
New +$4.36M 0.01% 1026
2023
Q2 		– Sell
-14,300
Closed -$3.98M – 1683
2023
Q1 		$3.98M Buy
14,300
+900
+7% +$249K 0.02% 809
2022
Q4 		$3.71M Hold
13,400
– – 0.02% 731
2022
Q3 		$3.58M Sell
13,400
-23,800
-64% -$5.05M 0.03% 657
2022
Q2 		$7.59M Buy
37,200
+3,600
+11% +$736K 0.07% 395
2022
Q1 		$7.08M Buy
+33,600
New +$7.31M 0.06% 454
2020
Q2 		– Sell
-13,600
Closed -$4.3M – 1058
2020
Q1 		$4.3M Buy
13,600
+8,100
+147% +$2.46M 0.07% 330
2019
Q4 		$1.63M Buy
5,500
+2,800
+104% +$777K 0.01% 920
2019
Q3 		$629K Sell
2,700
-7,800
-74% -$1.82M 0.01% 1172
2019
Q2 		$2.46M Buy
10,500
+5,400
+106% +$1.25M 0.02% 743
2019
Q1 		$1.21M Sell
5,100
-36,300
-88% -$11.4M 0.01% 968
2018
Q4 		$12.5M Sell
41,400
-117,000
-74% -$37.3M 0.11% 248
2018
Q3 		$56M Sell
158,400
-317,000
-67% -$109M 0.31% 48
2018
Q2 		$138M Buy
475,400
+258,700
+119% +$72.7M 0.72% 2
2018
Q1 		$59.3M Buy
216,700
+159,000
+276% +$49.4M 0.36% 50
2017
Q4 		$18.4M Buy
57,700
+20,200
+54% +$6.48M 0.1% 241
2017
Q3 		$11.7M Buy
37,500
+30,800
+460% +$9.12M 0.08% 284
2017
Q2 		$1.82M Buy
6,700
+1,900
+40% +$502K 0.01% 737
2017
Q1 		$1.31M Sell
4,800
-21,800
-82% -$6.16M 0.01% 840
2016
Q4 		$7.54M Sell
26,600
-12,400
-32% -$3.68M 0.07% 370
2016
Q3 		$12.2M Buy
+39,000
New +$11.6M 0.11% 229
2016
Q2 		– Sell
-4,500
Closed -$1.17M – 1526
2016
Q1 		$1.17M Sell
4,500
-70,400
-94% -$18.6M 0.01% 848
2015
Q4 		$22.9M Buy
74,900
+70,500
+1,602% +$20.3M 0.24% 116
2015
Q3 		$1.28M Sell
4,400
-1,100
-20% -$363K 0.01% 747
2015
Q2 		$2.22M Sell
5,500
-2,300
-29% -$923K 0.03% 596
2015
Q1 		$3.29M Sell
7,800
-15,500
-67% -$6.11M 0.04% 452
2014
Q4 		$7.91M Sell
23,300
-10,800
-32% -$3.49M 0.09% 291
2014
Q3 		$11.3M Sell
34,100
-88,300
-72% -$29.1M 0.13% 201
2014
Q2 		$38.6M Buy
122,400
+36,100
+42% +$10.9M 0.41% 35
2014
Q1 		$26.4M Buy
86,300
+35,100
+69% +$11.1M 0.32% 49
2013
Q4 		$14.3M Sell
51,200
-18,000
-26% -$4.66M 0.18% 115
2013
Q3 		$16.7M Buy
69,200
+63,200
+1,053% +$14.1M 0.23% 97
2013
Q2 		$1.29M Buy
+6,000
New +$1.28M 0.02% 732

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.