Hydro One (H.TO) - Market capitalization

Market cap: A$33.20 Billion

As of April 2025 Hydro One has a market cap of A$33.20 Billion. This makes Hydro One the world's 895th 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	A$33.20 B	11.85%
2024	A$29.68 B	12.58%
2023	A$26.36 B	11.66%
2022	A$23.61 B	10.83%
2021	A$21.30 B	22.03%
2020	A$17.46 B	6.67%
2019	A$16.36 B	30.17%
2018	A$12.57 B	-7.5%
2017	A$13.59 B	-5.86%
2016	A$14.44 B	10.04%
2015	A$13.12 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: A$33.20 Billion