Algoma Steel Group (TSX:ASTL) Market Cap: C$626 Mil (As of Jun. 27, 2026)


TSX:ASTL Algoma Steel Group Inc TSX:ASTL
63 GF Score
Price C$5.94
GF Value C$7.85
Valuation Modestly Undervalued
! 7 Warning Signs
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What is Algoma Steel Group Market Cap?

Algoma Steel Group TSX:ASTL -0.50% 63 Market Cap is C$626 Mil as of Jun. 27, 2026. GuruFocus rates TSX:ASTL with a GF Score™ of 63/100 and a GF Value™ of C$7.85 (Modestly Undervalued). The stock has 7 warning signs investors should review. Among 643 Steel companies, Algoma Steel Group ranks better than 72.32% 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). Algoma Steel Group's share price for the quarter that ended in Mar. 2026 was C$5.74. Algoma Steel Group's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 105 Mil. Therefore, Algoma Steel Group's market cap for the quarter that ended in Mar. 2026 was C$605 Mil.

Algoma Steel Group's quarterly market cap increased from Sep. 2025 (C$518 Mil) to Dec. 2025 (C$593 Mil) and increased from Dec. 2025 (C$593 Mil) to Mar. 2026 (C$605 Mil).

Algoma Steel Group's annual market cap increased from Mar. 2023 (C$1,134 Mil) to Mar. 2024 (C$1,202 Mil) but then declined from Mar. 2024 (C$1,202 Mil) to Dec. 2025 (C$593 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. Algoma Steel Group's Enterprise Value for Today is C$1,399 Mil.


Algoma Steel Group  (TSX:ASTL) 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 company’s 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.


Algoma Steel Group Market Cap Related Terms


Algoma Steel Group Market Cap Historical Data

* Premium members only.

The historical data trend for Algoma Steel Group'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.

Algoma Steel Group Market Cap Chart

Algoma Steel Group Annual Data
Trend Mar20 Mar21 Mar22 Mar23 Mar24 Dec25
Market Cap
Get a 7-Day Free Trial 0.00 2,077.33 1,134.07 1,202.39 592.88

Algoma Steel Group Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Market Cap Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 819.53 987.43 518.37 592.88 604.93

TSX:ASTL vs NUE, STLD, RS: Market Cap Comparison

For the Steel subindustry, Algoma Steel Group'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.


Algoma Steel Group Market Cap vs Steel Industry

For the Steel industry and Basic Materials sector, Algoma Steel Group's Market Cap distribution charts can be found below:

* The bar in red indicates where Algoma Steel Group's Market Cap falls into.


TSX:ASTL
63GF Score
Algoma Steel Group Inc TSX:ASTL
Market Cap is just one metric. See GF Score™, valuation, warning signs, and more.
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Algoma Steel Group Market Cap Calculation

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.

Algoma Steel Group's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as

Market Cap (A: Dec. 2025 )=Share Price (A: Dec. 2025 )*Shares Outstanding (EOP) (A: Dec. 2025 )
=C$5.65*104.934
=C$593

Algoma Steel Group's Market Cap for the quarter that ended in Mar. 2026 is calculated as

Market Cap (Q: Mar. 2026 )=Share Price (Q: Mar. 2026 )*Shares Outstanding (EOP) (Q: Mar. 2026 )
=C$5.74*105.389
=C$605

* 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.

Frequently Asked Questions Learn more about Market Cap →
What does a Market Cap of C$626 Mil mean?
Algoma Steel Group (TSX:ASTL) has a Market Cap of C$626 Mil as of Jun. 27, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Algoma Steel Group and its competitors. According to the industry distribution chart, Algoma Steel Group ranks #178 out of 643 companies in the Steel industry, placing it in the top 27.7%.
Is Algoma Steel Group's Market Cap too high?
Algoma Steel Group's current Market Cap is C$626 Mil. Based on the distribution chart, Algoma Steel Group ranks #178 out of 643 companies in the Steel industry, which is above the industry midpoint. Overall, Algoma Steel Group has a GF Score™ of 63/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Algoma Steel Group's Market Cap compare to NUE and STLD?
According to the Steel industry distribution chart, Algoma Steel Group ranks #178 out of 643 companies for Market Cap. This puts Algoma Steel Group in the upper half of its industry. The industry median Market Cap is 99.85. 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 a Steel company?
The median Market Cap among Steel companies is 99.85, based on 643 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. 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 Algoma Steel Group and its competitors. For the Steel industry, the median Market Cap is 99.85 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Algoma Steel Group's current Market Cap is C$626 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Algoma Steel Group stock overvalued right now?
Based on GuruFocus' analysis, Algoma Steel Group (TSX:ASTL) is currently considered Modestly Undervalued. The stock's GF Value™ is C$7.85, compared to a current price of C$5.94 — trading 24.3% below its estimated fair value. The current Market Cap is C$626 Mil. Algoma Steel Group's overall GF Score™ is 63/100 with 7 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 Algoma Steel Group (TSX:ASTL), the current Market Cap is C$626 Mil as of Jun. 27, 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 Algoma Steel Group (TSX:ASTL) Overvalued in 2026?

Based on GuruFocus' analysis, Algoma Steel Group stock appears to be undervalued. The current stock price of C$5.94 is trading 24.3% below its estimated GF Value™ of C$7.85. GuruFocus considers Algoma Steel Group to be Modestly Undervalued.

Key valuation signals for TSX:ASTL:

  • Market Cap: C$626 Mil
  • GF Value™: C$7.85 vs. price of C$5.94 (24.3% below fair value)
  • GF Score™: 63/100 with 7 warning signs

No single metric tells the full story. See the TSX:ASTL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Algoma Steel Group Business Description

Other Exchanges ASTL:USA9ZY:Germany
Address 105 West Street, Sault Ste. Marie, ON, CAN, P6A 7B4
Algoma Steel Group Inc is a fully integrated steel producer of hot and cold rolled steel products, including coiled sheet and plate, strategically located. The firm operates in a single segment of basic steel production including sheets, plates, slabs, and freights. The company's revenue is generated from contracts to produce, ship, and deliver steel products Geographically it serves Canada, the United States, and the rest of the world, whilst driving key revenue from United States. The company generates the majority of its revenue from the sale of Steel sheets and strips.
63GF Score

Get the complete analysis for TSX:ASTL

Market Cap is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

C$5.94
Price
C$7.85
GF Value