D. E. Shaw & Co., Inc. Biogen Inc. Transaction History

D. E. Shaw & Co., Inc.

$125 Billion
Q2 2025

A detailed history of D. E. Shaw & Co., Inc. transactions in Biogen Inc. stock. As of the latest transaction made, D. E. Shaw & Co., Inc. holds 1,366,207 shares of BIIB stock, worth $218 Million. This represents 0.14% of its overall portfolio holdings.

Number of Shares

1,366,207

Previous 1,585,572 13.84%

Holding current value

$218 Million

Previous $217 Million 20.92%

% of portfolio

0.14%

Previous 0.22%

32 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	SELL	$113.38 - $135.49 $24.9 Million - $29.7 Million	-219,365 Reduced 13.84%	1,366,207 $172 Million
Q1 2025 May 15, 2025	SELL	$133.43 - $153.27 $3.25 Million - $3.73 Million	-24,327 Reduced 1.51%	1,585,572 $217 Million
Q4 2024 Feb 14, 2025	BUY	$146.47 - $191.55 $172 Million - $225 Million	1,174,960 Added 270.14%	1,609,899 $246 Million
Q3 2024 Nov 14, 2024	BUY	$189.07 - $236.8 $41.6 Million - $52.2 Million	220,248 Added 102.59%	434,939 $84.3 Million
Q2 2024 Aug 14, 2024	SELL	$190.52 - $236.72 $16.3 Million - $20.2 Million	-85,317 Reduced 28.44%	214,691 $49.8 Million
Q1 2024 May 15, 2024	BUY	$212.02 - $267.71 $58.5 Million - $73.9 Million	276,073 Added 1153.43%	300,008 $64.7 Million
Q4 2023 Feb 14, 2024	SELL	$222.59 - $267.94 $56.7 Million - $68.3 Million	-254,903 Reduced 91.42%	23,935 $6.19 Million
Q3 2023 Nov 14, 2023	SELL	$253.3 - $285.89 $144 Million - $162 Million	-567,606 Reduced 67.06%	278,838 $71.7 Million
Q2 2023 Aug 14, 2023	SELL	$275.25 - $318.06 $134 Million - $155 Million	-487,546 Reduced 36.55%	846,444 $241 Million
Q1 2023 May 15, 2023	SELL	$256.56 - $292.34 $108 Million - $123 Million	-422,092 Reduced 24.04%	1,333,990 $371 Million
Q4 2022 Feb 14, 2023	BUY	$252.44 - $306.72 $55.7 Million - $67.7 Million	220,767 Added 14.38%	1,756,082 $486 Million
Q3 2022 Nov 14, 2022	BUY	$194.69 - $268.46 $34.9 Million - $48.2 Million	179,461 Added 13.24%	1,535,315 $410 Million
Q2 2022 Aug 15, 2022	BUY	$187.54 - $223.02 $67.9 Million - $80.7 Million	361,974 Added 36.42%	1,355,854 $277 Million
Q1 2022 May 16, 2022	BUY	$193.77 - $244.14 $76.9 Million - $96.9 Million	396,919 Added 66.49%	993,880 $209 Million
Q4 2021 Feb 14, 2022	BUY	$223.92 - $287.77 $49.4 Million - $63.4 Million	220,470 Added 58.56%	596,961 $143 Million
Q3 2021 Nov 15, 2021	SELL	$282.99 - $369.05 $117 Million - $152 Million	-413,202 Reduced 52.32%	376,491 $107 Million
Q2 2021 Aug 16, 2021	BUY	$259.0 - $414.71 $46.7 Million - $74.8 Million	180,453 Added 29.62%	789,693 $273 Million
Q1 2021 May 17, 2021	SELL	$242.95 - $284.63 $19.1 Million - $22.4 Million	-78,553 Reduced 11.42%	609,240 $170 Million
Q4 2020 Feb 16, 2021	BUY	$236.26 - $355.63 $75.6 Million - $114 Million	319,901 Added 86.96%	687,793 $168 Million
Q3 2020 Nov 16, 2020	SELL	$264.77 - $305.71 $126 Million - $145 Million	-475,814 Reduced 56.4%	367,892 $104 Million
Q2 2020 Aug 14, 2020	BUY	$258.66 - $342.55 $111 Million - $146 Million	427,363 Added 102.65%	843,706 $226 Million
Q1 2020 May 15, 2020	SELL	$268.85 - $341.04 $314 Million - $398 Million	-1,167,480 Reduced 73.71%	416,343 $132 Million
Q4 2019 Feb 14, 2020	SELL	$220.06 - $304.07 $239 Million - $330 Million	-1,085,030 Reduced 40.66%	1,583,823 $470 Million
Q3 2019 Nov 14, 2019	BUY	$217.44 - $243.88 $20.8 Million - $23.4 Million	95,877 Added 3.73%	2,668,853 $621 Million
Q2 2019 Aug 14, 2019	BUY	$219.29 - $241.72 $334 Million - $368 Million	1,524,355 Added 145.37%	2,572,976 $602 Million
Q1 2019 May 15, 2019	BUY	$216.71 - $338.96 $141 Million - $221 Million	651,468 Added 164.03%	1,048,621 $248 Million
Q4 2018 Feb 14, 2019	SELL	$278.5 - $352.75 $13 Million - $16.5 Million	-46,678 Reduced 10.52%	397,153 $120 Million
Q3 2018 Nov 14, 2018	BUY	$293.51 - $383.83 $31.7 Million - $41.5 Million	108,002 Added 32.16%	443,831 $157 Million
Q2 2018 Aug 14, 2018	SELL	$257.52 - $306.91 $159 Million - $190 Million	-619,096 Reduced 64.83%	335,829 $97.5 Million
Q1 2018 May 15, 2018	BUY	$260.13 - $367.91 $125 Million - $176 Million	478,787 Added 100.56%	954,925 $261 Million
Q4 2017 Feb 14, 2018	SELL	$307.64 - $344.58 $41.2 Million - $46.1 Million	-133,795 Reduced 21.94%	476,138 $152 Million
Q3 2017 Nov 14, 2017	BUY	$281.15 - $329.69 $171 Million - $201 Million	609,933	609,933 $191 Million

Others Institutions Holding BIIB

# of Institutions

1,066

Shares Held

131M

Call Options Held

2.85M

Put Options Held

2.55M

View Full List

About BIOGEN INC.

Ticker BIIB
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 144,000,992
Market Cap $23B
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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