Alnylam Pharmaceuticals, Inc. (ALNY) Shares Outstanding

Shares Outstanding

133.81M296.55K+0.22%

August 1, 2026

Summary

Current Value: As of today, ALNY has 133.81M outstanding shares, up +0.22% on August 1, 2026
Historical Performance: ALNY shares outstanding is up +1.53% year-over-year, up +6.66% over the past 3 years
All-Time High Comparison: ALNY shares outstanding is currently at its all-time high
3-Year Low Comparison: ALNY shares outstanding is +6.66% above its 3-year low of 125.45M reached on an earlier date

Chart

beforeafter

Performance

ALNY Performance
Metric	Date	Value	1Y	3Y	5Y
Shares Outstanding	Aug 1, 26	133.81M	+1.5%	+6.7%	+12.0%
Price	Oct 8, 26	$224.53	-50.2%	+26.9%	+10.2%
Market Cap	Oct 8, 26	$30B	-49.4%	+35.4%	+23.4%
PE Ratio	Oct 8, 26	37.91	-95.8%	–	–
TTM Revenue	Jun 30, 26	$4.80B	+95.1%	+288.3%	+598.8%
TTM EPS	Jun 30, 26	$5.92	+368.0%	+168.7%	+177.9%
	Oct 8, 26	$29.72B	-50.0%	+32.4%	+24.2%
TTM Net Income	Jun 30, 26	$807.99M	+382.7%	+176.0%	+191.1%
TTM Dividend	Oct 8, 26	-	–	–	–

Highs

ALNY Shares Outstanding Highs Comparison
Period	High	Date	Current
1Y	133.81M	Aug 1, 26	at high
3Y	133.81M	Aug 1, 26	at high
5Y	133.81M	Aug 1, 26	at high
All	133.81M	Aug 1, 26	at high

Lows

ALNY Shares Outstanding Lows Comparison
Period	Low	Date	Current
1Y	131.79M	N/A	+1.5%
3Y	125.45M	N/A	+6.7%
5Y	119.48M	N/A	+12.0%
All	2.32M	Mar 30, 04	+5671.6%

History

Month	Value	Change
Aug 2026	133.81M	+1.1%
Dec 2025	132.38M	+2.4%
Dec 2024	129.29M	+2.8%
Dec 2023	125.79M	+1.5%
Dec 2022	123.93M	+3.1%
Dec 2021	120.18M	+3.2%
Dec 2020	116.43M	+3.8%
Dec 2019	112.19M	+10.9%
Dec 2018	101.18M	+1.5%
Dec 2017	99.67M	+16.0%
Dec 2016	85.94M	+1.0%
Dec 2015	85.09M	+10.2%

Month	Value	Change
Dec 2014	77.20M	+21.1%
Dec 2013	63.74M	+21.4%
Dec 2012	52.49M	+22.9%
Dec 2011	42.72M	+0.9%
Dec 2010	42.34M	+1.2%
Dec 2009	41.84M	+1.0%
Dec 2008	41.41M	+1.6%
Dec 2007	40.77M	+10.0%
Dec 2006	37.05M	+39.1%
Dec 2005	26.64M	+27.8%
Dec 2004	20.85M	-

FAQ

What is the current shares outstanding of ALNY?: As of today, ALNY shares outstanding is 133.81M
What is 1-year change in ALNY shares outstanding?: ALNY shares outstanding is up +1.53% year-over-year
What is 3-year change in ALNY shares outstanding?: ALNY shares outstanding is up +6.66% over the past 3 years
How far is ALNY shares outstanding from its all-time high?: ALNY shares outstanding is currently at its all-time high

Data Sources & References

ALNY Official Website www.alnylam.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1178670/000162828026007497/0001628280-26-007497-index.htm
ALNY Profile on Yahoo Finance finance.yahoo.com/quote/ALNY
ALNY Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/alny