Group One Trading, L.P. Biogen Inc. Transaction History

Group One Trading, L.P.

$2.2 Billion
Q1 2025

A detailed history of Group One Trading, L.P. transactions in Biogen Inc. stock. As of the latest transaction made, Group One Trading, L.P. holds 12,377 shares of BIIB stock, worth $1.68 Million. This represents 0.08% of its overall portfolio holdings.

Number of Shares

12,377

Previous 57,921 78.63%

Holding current value

$1.68 Million

Previous $8.86 Million 80.89%

% of portfolio

0.08%

Previous 0.33%

23 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q1 2025 May 14, 2025	SELL	$133.43 - $153.27 $6.08 Million - $6.98 Million	-45,544 Reduced 78.63%	12,377 $1.69 Million
Q4 2024 Feb 14, 2025	SELL	$146.47 - $191.55 $14.8 Million - $19.4 Million	-101,314 Reduced 63.63%	57,921 $8.86 Million
Q3 2024 Nov 14, 2024	BUY	$189.07 - $236.8 $8.05 Million - $10.1 Million	42,582 Added 36.5%	159,235 $30.9 Million
Q2 2024 Aug 14, 2024	BUY	$190.52 - $236.72 $22.2 Million - $27.6 Million	116,653 New	116,653 $27 Million
Q4 2023 Feb 14, 2024	BUY	$222.59 - $267.94 $787,523 - $947,971	3,538 Added 38.26%	12,786 $3.31 Million
Q3 2023 Nov 09, 2023	SELL	$253.3 - $285.89 $1.78 Million - $2 Million	-7,010 Reduced 43.12%	9,248 $2.38 Million
Q2 2023 Aug 09, 2023	BUY	$275.25 - $318.06 $1.91 Million - $2.21 Million	6,950 Added 74.67%	16,258 $4.63 Million
Q1 2023 May 12, 2023	BUY	$256.56 - $292.34 $2.39 Million - $2.72 Million	9,308 New	9,308 $2.59 Million
Q3 2022 Nov 09, 2022	BUY	$194.69 - $268.46 $6.52 Million - $8.99 Million	33,471 Added 44.69%	108,373 $28.9 Million
Q2 2022 Aug 11, 2022	BUY	$187.54 - $223.02 $3.9 Million - $4.63 Million	20,776 Added 38.38%	74,902 $15.3 Million
Q1 2022 May 12, 2022	BUY	$193.77 - $244.14 $2.2 Million - $2.77 Million	11,355 Added 26.55%	54,126 $11.4 Million
Q4 2021 Feb 11, 2022	BUY	$223.92 - $287.77 $9.58 Million - $12.3 Million	42,771 New	42,771 $10.3 Million
Q2 2021 Aug 10, 2021	SELL	$259.0 - $414.71 $6.77 Million - $10.8 Million	-26,125 Closed	0 $0
Q1 2021 May 12, 2021	SELL	$242.95 - $284.63 $2 Million - $2.34 Million	-8,220 Reduced 23.93%	26,125 $7.31 Million
Q4 2020 Feb 10, 2021	BUY	$236.26 - $355.63 $5.68 Million - $8.55 Million	24,050 Added 233.61%	34,345 $8.41 Million
Q3 2020 Nov 12, 2020	SELL	$264.77 - $305.71 $7.61 Million - $8.78 Million	-28,729 Reduced 73.62%	10,295 $2.92 Million
Q2 2020 Aug 13, 2020	BUY	$258.66 - $342.55 $10.1 Million - $13.4 Million	39,024 New	39,024 $10.4 Million
Q1 2020 May 13, 2020	SELL	$268.85 - $341.04 $2.75 Million - $3.49 Million	-10,226 Closed	0 $0
Q4 2019 Feb 10, 2020	BUY	$220.06 - $304.07 $2.25 Million - $3.11 Million	10,226 New	10,226 $3.03 Million
Q1 2018 May 11, 2018	SELL	$260.13 - $367.91 $2.75 Million - $3.89 Million	-10,566 Closed	0 $0
Q4 2017 Feb 09, 2018	BUY	$307.64 - $344.58 $3.25 Million - $3.64 Million	10,566 New	10,566 $3.37 Million
Q3 2017 Nov 15, 2017	SELL	$281.15 - $329.69 $1.12 Million - $1.31 Million	-3,969 Closed	0 $0
Q2 2017 Aug 14, 2017	BUY	N/A	3,969	3,969 $1.08 Million

Others Institutions Holding BIIB

# of Institutions

1,026

Shares Held

127M

Call Options Held

2.29M

Put Options Held

4.26M

View Full List

About BIOGEN INC.

Ticker BIIB
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 144,000,992
Market Cap $19.5B
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...

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Group One Trading, L.P. Biogen Inc. Transaction History