Hydro One (H.TO) - Market capitalization

Market cap: €19.44 Billion

As of April 2025 Hydro One has a market cap of €19.44 Billion. This makes Hydro One the world's 876th 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	€19.44 B	9.59%
2024	€17.74 B	9.19%
2023	€16.25 B	8.47%
2022	€14.98 B	9.83%
2021	€13.64 B	24.96%
2020	€10.91 B	6.7%
2019	€10.23 B	32.11%
2018	€7.74 B	-12.46%
2017	€8.84 B	-10.62%
2016	€9.89 B	13.18%
2015	€8.74 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: €19.44 Billion