Alnylam Pharmaceuticals (ALNY) - Market capitalization

Market cap: £46.11 Billion

As of December 2025 Alnylam Pharmaceuticals has a market cap of £46.11 Billion. This makes Alnylam Pharmaceuticals the world's 366th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Alnylam Pharmaceuticals from 2004 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£46.11 B	88.55%
2024	£24.45 B	29.72%
2023	£18.85 B	-21.98%
2022	£24.16 B	60.84%
2021	£15.02 B	35.63%
2020	£11.07 B	12.43%
2019	£9.85 B	69.55%
2018	£5.81 B	-37.66%
2017	£9.32 B	258.04%
2016	£2.60 B	-51.83%
2015	£5.40 B	12.38%
2014	£4.80 B	93.58%
2013	£2.48 B	319.24%
2012	£0.59 B	164.54%
2011	£0.22 B	-17.16%
2010	£0.27 B	-40.63%
2009	£0.45 B	-34.81%
2008	£0.69 B	17.08%
2007	£0.59 B	47.44%
2006	£0.40 B	170.95%
2005	£0.14 B	99.11%
2004	£75.03 M

End of Day market cap according to different sources

On Dec 4th, 2025 the market cap of Alnylam Pharmaceuticals was reported to be:

£46.11 Billion

by Nasdaq

£46.11 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Arrowhead Pharmaceuticals ARWR	£6.70 B	-85.46%	🇺🇸 USA
Regeneron Pharmaceuticals REGN	£57.46 B	24.61%	🇺🇸 USA
Sarepta Therapeutics SRPT	£1.79 B	-96.11%	🇺🇸 USA
OPKO Health OPK	£0.80 B	-98.26%	🇺🇸 USA
Regulus Therapeutics RGLS	£0.42 B	-99.08%	🇺🇸 USA
Novartis NVS	£190.61 B	313.33%	🇨🇭 Switzerland
Sanofi SNY	£89.53 B	94.15%	🇫🇷 France
Teva Pharmaceutical Industries TEVA	£24.44 B	-46.98%	🇮🇱 Israel

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Alnylam Pharmaceuticals (ALNY)

Market cap: £46.11 Billion