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
2025 Q4	–	Sell	-47,727	Closed	-$7.8M	–	2367
2025 Q3	$6.69M	Sell	47,727 -69,967	-59%	-$9.46M	0.02%	1068
2025 Q2	$14.8M	Sell	117,694 -95,321	-45%	-$11.9M	0.04%	574
2025 Q1	$29.1M	Sell	213,015 -27,328	-11%	-$3.91M	0.08%	330
2024 Q4	$36.8M	Buy	240,343 +54,406	+29%	+$9.18M	0.09%	303
2024 Q3	$36M	Buy	185,937 +92,713	+99%	+$19.4M	0.1%	272
2024 Q2	$21.6M	Sell	93,224 -54,206	-37%	-$11.8M	0.06%	398
2024 Q1	$31.8M	Buy	+147,430	New	+$34.5M	0.09%	291
2023 Q1	–	Sell	-17,431	Closed	-$4.82M	–	1555
2022 Q4	$4.83M	Sell	17,431 -14,492	-45%	-$4.09M	0.03%	626
2022 Q3	$8.52M	Buy	+31,923	New	+$6.78M	0.07%	369
2022 Q1	–	Sell	-23,743	Closed	-$5.16M	–	1457
2021 Q4	$5.7M	Buy	23,743 +3,721	+19%	+$957K	0.04%	585
2021 Q3	$5.67M	Buy	+20,022	New	+$6.56M	0.04%	544
2020 Q4	–	Sell	-55,464	Closed	-$15.7M	–	1288
2020 Q3	$15.7M	Sell	55,464 -50,239	-48%	-$14M	0.19%	143
2020 Q2	$28.3M	Buy	105,703 +16,703	+19%	+$5.02M	0.45%	46
2020 Q1	$28.2M	Sell	89,000 -21,091	-19%	-$6.4M	0.44%	38
2019 Q4	$32.7M	Buy	110,091 +23,604	+27%	+$6.55M	0.26%	98
2019 Q3	$20.1M	Buy	86,487 +7,294	+9%	+$1.7M	0.18%	150
2019 Q2	$18.5M	Buy	79,193 +34,548	+77%	+$7.98M	0.17%	170
2019 Q1	$10.6M	Buy	44,645 +37,318	+509%	+$11.8M	0.09%	286
2018 Q4	$2.21M	Buy	+7,327	New	+$2.34M	0.02%	810
2018 Q3	–	Sell	-105,767	Closed	-$36.4M	–	1960
2018 Q2	$30.7M	Buy	105,767 +76,902	+266%	+$21.6M	0.16%	183
2018 Q1	$7.9M	Buy	+28,865	New	+$8.96M	0.05%	516
2017 Q3	–	Sell	-39,350	Closed	-$11.7M	–	1519
2017 Q2	$10.7M	Sell	39,350 -56,565	-59%	-$15M	0.09%	287
2017 Q1	$26.2M	Buy	95,915 +13,696	+17%	+$3.87M	0.22%	131
2016 Q4	$23.3M	Buy	+82,219	New	+$24.4M	0.2%	134
2016 Q3	–	Sell	-48,664	Closed	-$14.4M	–	1558
2016 Q2	$11.8M	Buy	+48,664	New	+$12.8M	0.11%	222
2015 Q4	–	Sell	-57,636	Closed	-$16.6M	–	1538
2015 Q3	$16.8M	Buy	57,636 +38,472	+201%	+$12.7M	0.19%	140
2015 Q2	$7.74M	Buy	+19,164	New	+$7.69M	0.1%	278
2015 Q1	–	Sell	-27,543	Closed	-$10.9M	–	1445
2014 Q4	$9.35M	Sell	27,543 -14,223	-34%	-$4.6M	0.11%	250
2014 Q3	$13.8M	Buy	+41,766	New	+$13.8M	0.15%	154
2014 Q2	–	Sell	-800	Closed	-$241K	–	1675
2014 Q1	$245K	Buy	+800	New	+$254K	﹤0.01%	1558
2013 Q3	–	Sell	-97,336	Closed	-$21.8M	–	1580
2013 Q2	$20.9M	Buy	+97,336	New	+$20.8M	0.32%	42

Other funds holding BIIB

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Morgan Stanley New York $1.89T AUM 35.08% 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. 1,001 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.
1,001 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.