Hydro One (H.TO) - Market capitalization

Market cap: $18.29 Billion USD

As of January 2025 Hydro One has a market cap of $18.29 Billion USD. This makes Hydro One the world's 1036th 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 Hydro One from 2015 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	$18.29 B	-0.94%
2024	$18.46 B	2.79%
2023	$17.96 B	11.79%
2022	$16.07 B	4.03%
2021	$15.44 B	15.05%
2020	$13.42 B	17.16%
2019	$11.46 B	29.37%
2018	$8.85 B	-16.53%
2017	$10.61 B	1.96%
2016	$10.40 B	8.88%
2015	$9.56 B

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 Hydro One (H.TO)

Market cap: $18.29 Billion USD