Hydro OneHRNNF +3.34%74 Market Cap is $25,027 Mil as of Jun. 29, 2026. GuruFocus rates HRNNF with a GF Score™ of 74/100 and a GF Value™ of $35.84 (Modestly Overvalued). The stock has 10 warning signs investors should review. Among 515 Utilities - Regulated companies, Hydro One ranks better than 92.04% on this metric.
Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Hydro One's share price for the quarter that ended in Mar. 2026 was $41.19. Hydro One's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 600 Mil. Therefore, Hydro One's market cap for the quarter that ended in Mar. 2026 was $24,705 Mil.
Hydro One's quarterly market cap
increased
from Sep. 2025 ($21,184 Mil) to Dec. 2025 ($23,778 Mil) and
increased
from Dec. 2025 ($23,778 Mil) to Mar. 2026 ($24,705 Mil).
Hydro One's annual market cap
increased
from Dec. 2023 ($17,668 Mil) to Dec. 2024 ($18,324 Mil) and
increased
from Dec. 2024 ($18,324 Mil) to Dec. 2025 ($23,778 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Hydro One's Enterprise Value for Today is $38,578 Mil.
Hydro One (OTCPK:HRNNF) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Hydro One Market Cap Related Terms
Hydro One Market Cap Historical Data
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The historical data trend for Hydro One's Market Cap can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Utilities - Regulated Electric subindustry, Hydro One's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Hydro One Market Cap vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Hydro One's Market Cap distribution charts can be found below:
* The bar in red indicates where Hydro One's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Hydro One's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Hydro One (HRNNF) has a Market Cap of $25,027 Mil as of Jun. 29, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Hydro One and its competitors. According to the industry distribution chart, Hydro One ranks #41 out of 515 companies in the Utilities - Regulated industry, placing it in the top 8%.
Is Hydro One's Market Cap too high?
Hydro One's current Market Cap is $25,027 Mil. The Utilities - Regulated industry median Market Cap is 897.97. Hydro One's value of $25,027 Mil is 2687.1% above this industry median. Based on the distribution chart, Hydro One ranks #41 out of 515 companies in the Utilities - Regulated industry, which is in the top quartile — a strong position relative to peers. Overall, Hydro One has a GF Score™ of 74/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Hydro One's Market Cap compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, Hydro One ranks #41 out of 515 companies for Market Cap. This places Hydro One in the top 8% of its industry — outperforming the majority of peers. The industry median Market Cap is 897.97. Hydro One's value of $25,027 Mil is 2687.1% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for an Utilities - Regulated company?
The median Market Cap among Utilities - Regulated companies is 897.97, based on 515 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Hydro One's current Market Cap of $25,027 Mil is 2687.1% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Hydro One and its competitors. For the Utilities - Regulated industry, the median Market Cap is 897.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Hydro One's current Market Cap is $25,027 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Hydro One stock overvalued right now?
Based on GuruFocus' analysis, Hydro One (HRNNF) is currently considered Modestly Overvalued. The stock's GF Value™ is $35.84, compared to a current price of $41.71 — trading 16.4% above its estimated fair value. The current Market Cap is $25,027 Mil and 2687.1% above the Utilities - Regulated industry median of 897.97. Hydro One's overall GF Score™ is 74/100 with 10 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Hydro One (HRNNF), the current Market Cap is $25,027 Mil as of Jun. 29, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Hydro One (HRNNF) Overvalued in 2026?
Based on GuruFocus' analysis, Hydro One stock appears to be overvalued.
The current stock price of $41.71 is trading 16.4% above its estimated GF Value™ of $35.84.
GuruFocus considers Hydro One to be Modestly Overvalued.
Key valuation signals for HRNNF:
Market Cap: $25,027 Mil
GF Value™: $35.84 vs. price of $41.71 (16.4% above fair value)
Industry Position: 2687.1% above the Utilities - Regulated median (#41 of 515)
No single metric tells the full story. See the HRNNF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Hydro One operates regulated transmission and distribution assets in Ontario. The area's largest electricity provider serves nearly 1.5 million customers. Transmission accounts for roughly 60% of the company's rate base, with distribution accounting for the remainder. Hydro One operates a small telecom business with annual revenue contributing less than 1% to consolidated results. The province of Ontario holds an approximate 47.5% common equity stake.
74GF Score
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