Hydro One (H.TO) - Shares outstanding

Number of shares outstanding as of December 2025 : 599,777,420

According to Hydro One 's latest financial reports and stock price the company's current number of shares outstanding is 599,777,420. At the end of 2025 the company had 599,777,420 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Hydro One from 2009 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	0.59 B	0.06%
2024	0.59 B	-0.65%
2023	0.60 B	1.69%
2022	0.59 B	-0.82%
2021	0.59 B	0.11%
2020	0.59 B	0.16%
2019	0.59 B	0.12%
2018	0.59 B	0.08%
2017	0.59 B	0.06%
2016	0.59 B	0%
2015	0.59 B	594900%
2014	0.1 M	0%
2013	0.1 M	0%
2012	0.1 M	-99.98%
2011	0.59 B	594900%
2010	0.1 M	0%
2009	0.1 M

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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Number of shares outstanding for Hydro One (H.TO)