Baillie Gifford & CO Alnylam Pharmaceuticals, Inc. Transaction History

Baillie Gifford & CO

$128 Billion
Q2 2025

A detailed history of Baillie Gifford & CO transactions in Alnylam Pharmaceuticals, Inc. stock. As of the latest transaction made, Baillie Gifford & CO holds 3,031,891 shares of ALNY stock, worth $1.37 Billion. This represents 0.77% of its overall portfolio holdings.

Number of Shares

3,031,891

Previous 3,657,607 17.11%

Holding current value

$1.37 Billion

Previous $988 Million 0.11%

% of portfolio

0.77%

Previous 0.89%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 06, 2025	SELL	$224.32 - $326.09 $140 Million - $204 Million	-625,716 Reduced 17.11%	3,031,891 $989 Million
Q1 2025 May 07, 2025	SELL	$233.07 - $290.7 $89.2 Million - $111 Million	-382,652 Reduced 9.47%	3,657,607 $988 Million
Q4 2024 Jan 31, 2025	SELL	$232.27 - $300.43 $197 Million - $254 Million	-846,741 Reduced 17.33%	4,040,259 $951 Million
Q3 2024 Nov 05, 2024	SELL	$233.81 - $287.01 $268 Million - $329 Million	-1,145,656 Reduced 18.99%	4,887,000 $1.34 Billion
Q2 2024 Jul 25, 2024	SELL	$143.31 - $247.0 $84.7 Million - $146 Million	-590,921 Reduced 8.92%	6,032,656 $1.47 Billion
Q1 2024 May 01, 2024	SELL	$146.51 - $198.2 $50.3 Million - $68.1 Million	-343,520 Reduced 4.93%	6,623,577 $990 Million
Q4 2023 Jan 26, 2024	SELL	$151.41 - $196.57 $181 Million - $235 Million	-1,196,042 Reduced 14.65%	6,967,097 $1.33 Billion
Q3 2023 Nov 13, 2023	SELL	$170.77 - $211.65 $39.1 Million - $48.5 Million	-229,077 Reduced 2.73%	8,163,139 $1.45 Billion
Q2 2023 Jul 28, 2023	SELL	$185.01 - $212.05 $45.7 Million - $52.4 Million	-246,925 Reduced 2.86%	8,392,216 $1.59 Billion
Q1 2023 May 03, 2023	SELL	$182.66 - $235.53 $140 Million - $181 Million	-768,730 Reduced 8.17%	8,639,141 $1.73 Billion
Q4 2022 Jan 24, 2023	SELL	$185.53 - $241.31 $19.8 Million - $25.8 Million	-106,887 Reduced 1.12%	9,407,871 $2.24 Billion
Q3 2022 Oct 27, 2022	SELL	$138.54 - $232.0 $62.9 Million - $105 Million	-453,676 Reduced 4.55%	9,514,758 $1.9 Billion
Q2 2022 Aug 08, 2022	SELL	$120.42 - $169.29 $20.6 Million - $29 Million	-171,295 Reduced 1.69%	9,968,434 $1.45 Billion
Q1 2022 May 05, 2022	SELL	$127.18 - $173.91 $60.7 Million - $83 Million	-477,022 Reduced 4.49%	10,139,729 $1.66 Billion
Q4 2021 Jan 20, 2022	BUY	$159.56 - $209.29 $32.1 Million - $42.1 Million	200,967 Added 1.93%	10,616,751 $1.8 Billion
Q3 2021 Oct 19, 2021	BUY	$169.75 - $207.73 $32.4 Million - $39.7 Million	190,925 Added 1.87%	10,415,784 $1.97 Billion
Q2 2021 Aug 02, 2021	BUY	$128.63 - $176.89 $19.3 Million - $26.5 Million	149,896 Added 1.49%	10,224,859 $1.73 Billion
Q1 2021 May 06, 2021	BUY	$126.83 - $175.69 $120 Million - $166 Million	942,541 Added 10.32%	10,074,963 $1.42 Billion
Q4 2020 Feb 10, 2021	BUY	$122.97 - $147.0 $29.6 Million - $35.4 Million	240,934 Added 2.71%	9,132,422 $1.19 Billion
Q3 2020 Nov 12, 2020	BUY	$121.19 - $165.49 $29.4 Million - $40.2 Million	242,810 Added 2.81%	8,891,488 $1.29 Billion
Q2 2020 Aug 12, 2020	BUY	$104.21 - $156.44 $24.7 Million - $37.1 Million	236,909 Added 2.82%	8,648,678 $1.28 Billion
Q1 2020 May 08, 2020	BUY	$93.12 - $133.99 $21 Million - $30.2 Million	225,046 Added 2.75%	8,411,769 $916 Million
Q4 2019 Feb 10, 2020	SELL	$74.51 - $124.23 $3.67 Million - $6.12 Million	-49,251 Reduced 0.6%	8,186,723 $943 Million
Q3 2019 Nov 07, 2019	BUY	$70.9 - $87.82 $143 Million - $178 Million	2,022,504 Added 32.55%	8,235,974 $662 Million
Q2 2019 Aug 08, 2019	BUY	$65.86 - $92.79 $34.8 Million - $49.1 Million	528,966 Added 9.31%	6,213,470 $451 Million
Q1 2019 May 01, 2019	BUY	$72.76 - $93.45 $68.2 Million - $87.6 Million	937,654 Added 19.75%	5,684,504 $0
Q4 2018 Feb 14, 2019	BUY	$62.67 - $88.33 $17.8 Million - $25.1 Million	284,024 Added 6.36%	4,746,850 $346 Million
Q3 2018 Nov 13, 2018	BUY	$87.52 - $122.67 $20.2 Million - $28.3 Million	230,945 Added 5.46%	4,462,826 $391 Million
Q2 2018 Jul 17, 2018	BUY	$88.31 - $107.8 $35.1 Million - $42.9 Million	397,668 Added 10.37%	4,231,881 $417 Million
Q1 2018 May 10, 2018	BUY	$115.92 - $148.54 $25.9 Million - $33.2 Million	223,199 Added 6.18%	3,834,213 $457 Million
Q4 2017 Feb 13, 2018	BUY	$114.49 - $139.98 $23.5 Million - $28.8 Million	205,622 Added 6.04%	3,611,014 $459 Million
Q3 2017 Oct 20, 2017	SELL	$72.53 - $118.27 $1.88 Million - $3.07 Million	-25,924 Reduced 0.76%	3,405,392 $400 Million
Q2 2017 Aug 10, 2017	BUY	N/A	3,431,316	3,431,316 $274 Million

Others Institutions Holding ALNY

# of Institutions

742

Shares Held

115M

Call Options Held

584K

Put Options Held

672K

View Full List

About ALNYLAM PHARMACEUTICALS, INC.

Ticker ALNY
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 123,028,000
Market Cap $55.6B
Description
Alnylam Pharmaceuticals, Inc., a biopharmaceutical company, focuses on discovering, developing, and commercializing novel therapeutics based on ribonucleic acid interference. The company's pipeline of investigational RNAi therapeutics focuses on genetic medicines, cardio-metabolic diseases, hepatic infectious diseases, and central nervous system...

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Baillie Gifford & CO Alnylam Pharmaceuticals, Inc. Transaction History