Baker Bros. Advisors LP Alkermes Plc. Transaction History

Baker Bros. Advisors LP

$12.3 Billion
Q3 2025

A detailed history of Baker Bros. Advisors LP transactions in Alkermes Plc. stock. As of the latest transaction made, Baker Bros. Advisors LP holds 8,091,351 shares of ALKS stock, worth $235 Million. This represents 1.98% of its overall portfolio holdings.

Number of Shares

8,091,351

Previous 6,410,603 26.22%

Holding current value

$235 Million

Previous $183 Million 32.35%

% of portfolio

1.98%

Previous 1.86%

16 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$26.13 - $30.46 $43.9 Million - $51.2 Million	1,680,748 Added 26.22%	8,091,351 $243 Million
Q2 2025 Aug 14, 2025	BUY	$26.59 - $32.65 $51.2 Million - $62.9 Million	1,927,318 Added 42.99%	6,410,603 $183 Million
Q1 2025 May 15, 2025	BUY	$28.08 - $36.0 $8.47 Million - $10.9 Million	301,534 Added 7.21%	4,483,285 $148 Million
Q2 2024 Aug 14, 2024	BUY	$23.21 - $27.24 $97.1 Million - $114 Million	4,181,751 New	4,181,751 $101 Million
Q3 2022 Nov 14, 2022	SELL	$22.0 - $31.87 $15.1 Million - $21.8 Million	-684,984 Reduced 45.67%	815,016 $18.2 Million
Q4 2021 Feb 14, 2022	BUY	$21.47 - $32.08 $5.84 Million - $8.72 Million	271,830 Added 22.13%	1,500,000 $34.9 Million
Q1 2021 May 17, 2021	SELL	$18.21 - $23.2 $5.59 Million - $7.12 Million	-306,979 Reduced 20.0%	1,228,170 $22.9 Million
Q4 2020 Feb 16, 2021	BUY	$15.39 - $22.1 $2.71 Million - $3.89 Million	176,148 Added 12.96%	1,535,149 $30.6 Million
Q3 2020 Nov 16, 2020	BUY	$16.16 - $20.66 $1.85 Million - $2.36 Million	114,257 Added 9.18%	1,359,001 $22.5 Million
Q1 2020 May 15, 2020	BUY	$13.06 - $21.24 $5.9 Million - $9.59 Million	451,614 Added 56.94%	1,244,744 $17.9 Million
Q4 2019 Feb 14, 2020	BUY	$17.29 - $21.74 $2.91 Million - $3.65 Million	168,100 Added 26.89%	793,130 $16.2 Million
Q3 2019 Nov 14, 2019	BUY	$19.51 - $24.28 $4.39 Million - $5.46 Million	225,030 Added 56.26%	625,030 $12.2 Million
Q2 2019 Aug 14, 2019	BUY	$21.47 - $37.33 $7.15 Million - $12.4 Million	333,000 Added 497.01%	400,000 $9.02 Million
Q4 2018 Feb 13, 2019	SELL	$27.94 - $44.61 $929,032 - $1.48 Million	-33,251 Reduced 33.17%	67,000 $1.98 Million
Q1 2018 May 15, 2018	SELL	$53.61 - $67.26 $2.68 Million - $3.36 Million	-50,000 Reduced 33.28%	100,251 $5.81 Million
Q3 2017 Nov 14, 2017	BUY	$49.16 - $54.45 $7.39 Million - $8.18 Million	150,251	150,251 $7.64 Million

Others Institutions Holding ALKS

# of Institutions

400

Shares Held

175M

Call Options Held

901K

Put Options Held

400K

View Full List

About Alkermes plc.

Ticker ALKS
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—Specialty & Generic
Shares Outstandng 164,254,000
Market Cap $4.77B
Description
Alkermes plc, a biopharmaceutical company, researches, develops, and commercializes pharmaceutical products to address unmet medical needs of patients in various therapeutic areas in the United States, Ireland, and internationally. Its marketed products include ARISTADA, an intramuscular injectable suspension for the treatment of schizophrenia; ...

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Baker Bros. Advisors LP Alkermes Plc. Transaction History