Stock price history for AltaGas (ALA.TO)

Highest end of day price: 54.31 CAD (C$39.30 USD) on 2026-05-22

Lowest end of day price: 5.8389272689819 CAD (C$4.50 USD) on 2009-03-09

Stock price history of AltaGas from 2004 to 2026

Annual Stock Price Performance

Year	Performance
2026	29.77%
2025	27.23%
2024	24.77%
2023	23.84%
2022	-9.57%
2021	51.90%
2020	0.97%
2019	49.74%
2018	-47.44%
2017	-9.99%
2016	16.25%
2015	-26.28%
2014	10.36%
2013	25.72%
2012	9.07%
2011	56.80%
2010	19.08%
2009	8.67%
2008	-34.05%
2007	2.60%
2006	-6.91%
2005	22.02%
2004	21.21%

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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