Wellington Management Group LLP Biogen Inc. Transaction History

Wellington Management Group LLP

$545 Billion
Q3 2025

A detailed history of Wellington Management Group LLP transactions in Biogen Inc. stock. As of the latest transaction made, Wellington Management Group LLP holds 4,246,504 shares of BIIB stock, worth $712 Million. This represents 0.11% of its overall portfolio holdings.

Number of Shares

4,246,504

Previous 4,798,420 11.5%

Holding current value

$712 Million

Previous $603 Million 1.29%

% of portfolio

0.11%

Previous 0.11%

24 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$122.68 - $148.84 $67.7 Million - $82.1 Million	-551,916 Reduced 11.5%	4,246,504 $595 Million
Q2 2025 Aug 14, 2025	BUY	$113.38 - $135.49 $14.3 Million - $17.1 Million	125,983 Added 2.7%	4,798,420 $603 Million
Q1 2025 May 13, 2025	BUY	$133.43 - $153.27 $623 Million - $716 Million	4,672,437 New	4,672,437 $639 Million
Q4 2024 Feb 12, 2025	SELL	$146.47 - $191.55 $29.4 Million - $38.4 Million	-200,470 Reduced 3.91%	4,930,723 $754 Million
Q3 2024 Nov 14, 2024	SELL	$189.07 - $236.8 $6.67 Million - $8.36 Million	-35,298 Reduced 0.68%	5,131,193 $995 Million
Q2 2024 Aug 13, 2024	BUY	$190.52 - $236.72 $8.83 Million - $11 Million	46,349 Added 0.91%	5,166,491 $1.2 Billion
Q1 2024 May 15, 2024	BUY	$212.02 - $267.71 $1.09 Billion - $1.37 Billion	5,120,142 New	5,120,142 $1.1 Billion
Q4 2023 Feb 12, 2024	BUY	$222.59 - $267.94 $1.19 Billion - $1.43 Billion	5,324,396 New	5,324,396 $1.38 Billion
Q3 2023 Nov 14, 2023	BUY	$253.3 - $285.89 $7.08 Million - $7.99 Million	27,951 Added 0.52%	5,374,310 $1.38 Billion
Q2 2023 Aug 14, 2023	SELL	$275.25 - $318.06 $29.3 Million - $33.9 Million	-106,529 Reduced 1.95%	5,346,359 $1.52 Billion
Q1 2023 May 12, 2023	BUY	$256.56 - $292.34 $10.7 Million - $12.2 Million	41,675 Added 0.77%	5,452,888 $1.52 Billion
Q4 2022 Feb 13, 2023	BUY	$252.44 - $306.72 $69.6 Million - $84.5 Million	275,596 Added 5.37%	5,411,213 $1.5 Billion
Q3 2022 Nov 14, 2022	SELL	$194.69 - $268.46 $224 Million - $309 Million	-1,151,108 Reduced 18.31%	5,135,617 $1.37 Billion
Q2 2022 Aug 15, 2022	BUY	$187.54 - $223.02 $6.98 Million - $8.3 Million	37,199 Added 0.6%	6,286,725 $1.28 Billion
Q1 2022 May 16, 2022	BUY	$193.77 - $244.14 $12.6 Million - $15.9 Million	65,071 Added 1.05%	6,249,526 $1.32 Billion
Q4 2021 Feb 11, 2022	BUY	$223.92 - $287.77 $136 Million - $175 Million	606,735 Added 10.88%	6,184,455 $1.48 Billion
Q3 2021 Nov 15, 2021	SELL	$282.99 - $369.05 $6.83 Million - $8.91 Million	-24,141 Reduced 0.43%	5,577,720 $1.58 Billion
Q2 2021 Aug 16, 2021	SELL	$259.0 - $414.71 $78 Million - $125 Million	-300,980 Reduced 5.1%	5,601,861 $1.94 Billion
Q1 2021 May 17, 2021	BUY	$242.95 - $284.63 $29.4 Million - $34.4 Million	120,868 Added 2.09%	5,902,841 $1.65 Billion
Q4 2020 Feb 12, 2021	BUY	$236.26 - $355.63 $218 Million - $329 Million	924,781 Added 19.04%	5,781,973 $1.42 Billion
Q3 2020 Nov 16, 2020	BUY	$264.77 - $305.71 $22.1 Million - $25.5 Million	83,432 Added 1.75%	4,857,192 $1.38 Billion
Q2 2020 Aug 14, 2020	BUY	$258.66 - $342.55 $176 Million - $232 Million	678,521 Added 16.57%	4,773,760 $1.28 Billion
Q1 2020 May 14, 2020	SELL	$268.85 - $341.04 $151 Million - $191 Million	-560,517 Reduced 12.04%	4,095,239 $1.3 Billion
Q4 2019 Feb 11, 2020	BUY	$220.06 - $304.07 $1.02 Billion - $1.42 Billion	4,655,756 New	4,655,756 $1.38 Billion

Others Institutions Holding BIIB

# of Institutions

1,072

Shares Held

131M

Call Options Held

3.82M

Put Options Held

2.34M

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...

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Wellington Management Group LLP Biogen Inc. Transaction History