Hydro One (H.TO) - Market capitalization

Market cap: NZ$32.51 Billion

As of February 2025 Hydro One has a market cap of NZ$32.51 Billion. This makes Hydro One the world's 1038th 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	NZ$32.51 B	-0.7%
2024	NZ$32.74 B	15.26%
2023	NZ$28.40 B	12.23%
2022	NZ$25.31 B	11.92%
2021	NZ$22.61 B	21.54%
2020	NZ$18.60 B	9.35%
2019	NZ$17.01 B	28.85%
2018	NZ$13.20 B	-11.63%
2017	NZ$14.94 B	-0.55%
2016	NZ$15.02 B	7.58%
2015	NZ$13.96 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: NZ$32.51 Billion