Ken Fisher Biogen Inc. Transaction History

Fisher Asset Management, LLC

$271 Billion
Q3 2025

A detailed history of Ken Fisher (Fisher Asset Management, LLC) transactions in Biogen Inc. stock. As of the latest transaction made, Fisher Asset Management, LLC holds 277,285 shares of BIIB stock, worth $46.5 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

277,285

Previous 289,137 4.1%

Holding current value

$46.5 Million

Previous $36.3 Million 6.97%

% of portfolio

0.01%

Previous 0.01%

37 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 12, 2025	SELL	$122.68 - $148.84 $1.45 Million - $1.76 Million	-11,852 Reduced 4.1%	277,285 $38.8 Million
Q2 2025 Aug 13, 2025	SELL	$113.38 - $135.49 $1.12 Million - $1.34 Million	-9,893 Reduced 3.31%	289,137 $36.3 Million
Q1 2025 May 14, 2025	BUY	$133.43 - $153.27 $15.8 Million - $18.1 Million	118,106 Added 65.28%	299,030 $40.9 Million
Q4 2024 Feb 05, 2025	BUY	$146.47 - $191.55 $16.7 Million - $21.9 Million	114,156 Added 170.97%	180,924 $27.7 Million
Q3 2024 Nov 12, 2024	SELL	$189.07 - $236.8 $325,011 - $407,059	-1,719 Reduced 2.51%	66,768 $12.9 Million

Q2 2024 Aug 14, 2024	BUY	$190.52 - $236.72 $1.32 Million - $1.64 Million	6,943 Added 11.28%	68,487 $15.9 Million
Q1 2024 May 09, 2024	SELL	$212.02 - $267.71 $473,652 - $598,064	-2,234 Reduced 3.5%	61,544 $13.3 Million
Q4 2023 Mar 05, 2024	SELL	$222.59 - $267.94 $27,823 - $33,492	-125 Reduced 0.2%	63,778 $16.5 Million
Q4 2023 Feb 06, 2024	SELL	$222.59 - $267.94 $11.1 Million - $13.4 Million	-49,896 Reduced 43.85%	63,903 $16.5 Million
Q3 2023 Nov 13, 2023	SELL	$253.3 - $285.89 $4.18 Million - $4.72 Million	-16,518 Reduced 12.68%	113,799 $29.2 Million
Q2 2023 Dec 12, 2023	BUY	$275.25 - $318.06 $4.55 Million - $5.25 Million	16,518 Added 14.52%	130,317 $37.1 Million
Q2 2023 Aug 08, 2023	SELL	$275.25 - $318.06 $869,514 - $1 Million	-3,159 Reduced 2.37%	130,317 $37.1 Million
Q1 2023 Dec 12, 2023	BUY	$256.56 - $292.34 $4.88 Million - $5.56 Million	19,018 Added 16.71%	132,817 $36.9 Million
Q1 2023 May 01, 2023	BUY	$256.56 - $292.34 $251,685 - $286,785	981 Added 0.74%	133,476 $37.1 Million
Q4 2022 Feb 03, 2023	BUY	$252.44 - $306.72 $513,462 - $623,868	2,034 Added 1.56%	132,495 $36.7 Million
Q3 2022 Nov 08, 2022	SELL	$194.69 - $268.46 $464,725 - $640,814	-2,387 Reduced 1.8%	130,461 $34.8 Million
Q2 2022 Aug 09, 2022	BUY	$187.54 - $223.02 $94,520 - $112,402	504 Added 0.38%	132,848 $27.1 Million
Q1 2022 May 05, 2022	BUY	$193.77 - $244.14 $60,068 - $75,683	310 Added 0.23%	132,344 $27.9 Million
Q4 2021 Feb 02, 2022	BUY	$223.92 - $287.77 $5.27 Million - $6.78 Million	23,545 Added 21.7%	132,034 $31.7 Million
Q3 2021 Oct 26, 2021	BUY	$282.99 - $369.05 $966,127 - $1.26 Million	3,414 Added 3.25%	108,489 $30.7 Million
Q2 2021 Jul 27, 2021	BUY	$259.0 - $414.71 $1.68 Million - $2.69 Million	6,497 Added 6.59%	105,075 $36.4 Million
Q1 2021 Apr 27, 2021	SELL	$242.95 - $284.63 $1,457 - $1,707	-6 Reduced 0.01%	98,578 $27.6 Million
Q4 2020 Jan 29, 2021	BUY	$236.26 - $355.63 $1.1 Million - $1.65 Million	4,648 Added 4.95%	98,584 $24.1 Million
Q3 2020 Nov 10, 2020	BUY	$264.77 - $305.71 $272,977 - $315,187	1,031 Added 1.11%	93,936 $26.6 Million
Q2 2020 Aug 07, 2020	SELL	$258.66 - $342.55 $186,235 - $246,636	-720 Reduced 0.77%	92,905 $24.9 Million
Q1 2020 Apr 28, 2020	BUY	$268.85 - $341.04 $765,684 - $971,281	2,848 Added 3.14%	93,625 $29.6 Million
Q4 2019 Feb 12, 2020	SELL	$220.06 - $304.07 $7.31 Million - $10.1 Million	-33,205 Reduced 26.78%	90,777 $26.9 Million
Q3 2019 Oct 29, 2019	BUY	$217.44 - $243.88 $872,369 - $978,446	4,012 Added 3.34%	123,982 $28.9 Million
Q2 2019 Jul 30, 2019	SELL	$219.29 - $241.72 $3.49 Million - $3.84 Million	-15,901 Reduced 11.7%	119,970 $28.1 Million
Q1 2019 Apr 22, 2019	SELL	$216.71 - $338.96 $450,973 - $705,375	-2,081 Reduced 1.51%	135,871 $32.1 Million
Q4 2018 Jan 25, 2019	BUY	$278.5 - $352.75 $2.16 Million - $2.74 Million	7,771 Added 5.97%	137,952 $41.5 Million
Q3 2018 Oct 24, 2018	BUY	$293.51 - $383.83 $606,978 - $793,760	2,068 Added 1.61%	130,181 $46 Million
Q2 2018 Jul 09, 2018	BUY	$257.52 - $306.91 $1.21 Million - $1.44 Million	4,704 Added 3.81%	128,113 $37.2 Million
Q1 2018 May 11, 2018	SELL	$260.13 - $367.91 $7.19 Million - $10.2 Million	-27,644 Reduced 18.3%	123,409 $33.8 Million
Q1 2018 Apr 19, 2018	BUY	$260.13 - $367.91 $13.5 Million - $19 Million	51,773 Added 52.15%	151,053 $41.4 Million
Q4 2017 Jan 24, 2018	SELL	$307.64 - $344.58 $2.64 Million - $2.96 Million	-8,584 Reduced 7.96%	99,280 $31.6 Million
Q3 2017 Oct 17, 2017	BUY	$281.15 - $329.69 $30.3 Million - $35.6 Million	107,864	107,864 $33.8 Million

Others Institutions Holding BIIB

# of Institutions

1,080

Shares Held

131M

Call Options Held

3.77M

Put Options Held

2.31M

View Full List

About BIOGEN INC.

Ticker BIIB
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 144,000,992
Market Cap $24.1B
Description
Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an eta...

More about BIIB

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