GSM (Ferroglobe) Reserves - Probable (K): 0.00 (As of Mar. 2026)

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GSM Ferroglobe PLC GSM
69 GF Score
Price $3.35
GF Value $4.16
Valuation Modestly Undervalued
! 2 Warning Signs
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What is Ferroglobe Reserves - Probable (K)?

Ferroglobe GSM -0.15% 69 Reserves - Probable (K) is 0.00 as of Mar. 2026. GuruFocus rates GSM with a GF Score™ of 69/100 and a GF Value™ of $4.16 (Modestly Undervalued). The stock has 2 warning signs investors should review.

Probable reserves are reserves calculated to be at least 50% likely to be recovered through drilling.

The historical rank and industry rank for Ferroglobe's Reserves - Probable (K) or its related term are showing as below:

GSM's Reserves - Probable (K) is not ranked *
in the Metals & Mining industry.
Industry Median:
* Ranked among companies with meaningful Reserves - Probable (K) only.

Ferroglobe  (NAS:GSM) Reserves - Probable (K) Explanation

Reserves - Probable (K) are reserves calculated to be at least 50% likely to be recovered through drilling. Probable reserves do not necessarily imply proven reserves, since a firm may decide not to recover the deposits because of the expensive economics involved in extraction.

Any combination of regulatory, economic and technological challenges could reduce the likelihood that a firm can profitably extract the reserve.

Ferroglobe Reserves - Probable (K) Related Terms

Ferroglobe Reserves - Probable (K) Historical Data

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The historical data trend for Ferroglobe's Reserves - Probable (K) 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.

Ferroglobe Reserves - Probable (K) Chart

Ferroglobe Annual Data
Trend Dec21 Dec22 Dec23 Dec24 Dec25
Reserves - Probable (K)
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FerroglobeQuarterly Data
Trend Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Reserves - Probable (K)
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GSM vs NB, TMCR, LZM: Reserves - Probable (K) Comparison

For the Other Industrial Metals & Mining subindustry, Ferroglobe's Reserves - Probable (K), along with its competitors' market caps and Reserves - Probable (K) 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.

GSM
69GF Score
Ferroglobe PLC GSM
Reserves - Probable (K) is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions
What does a Reserves - Probable (K) of 0.00 mean?
Ferroglobe (GSM) has a Reserves - Probable (K) of 0.00 as of Mar. 2026. Probable reserves are reserves calculated to be at least 50% likely to be recovered through drilling. View historical data on Ferroglobe and its competitors.
Is Ferroglobe's Reserves - Probable (K) too high?
Ferroglobe's current Reserves - Probable (K) is 0.00. Overall, Ferroglobe has a GF Score™ of 69/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ferroglobe's Reserves - Probable (K) compare to NB and TMCR?
Ferroglobe's Reserves - Probable (K) of 0.00 can be compared against companies in the Metals & Mining industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Reserves - Probable (K) for a Metals & Mining company?
A good Reserves - Probable (K) depends on the Metals & Mining industry context. However, Reserves - Probable (K) 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 Reserves - Probable (K) mean?
A high Reserves - Probable (K) can signal that a stock is expensive relative to its fundamentals. Probable reserves are reserves calculated to be at least 50% likely to be recovered through drilling. View historical data on Ferroglobe and its competitors. Ferroglobe's current Reserves - Probable (K) is 0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ferroglobe stock overvalued right now?
Based on GuruFocus' analysis, Ferroglobe (GSM) is currently considered Modestly Undervalued. The stock's GF Value™ is $4.16, compared to a current price of $3.35 — trading 19.5% below its estimated fair value. The current Reserves - Probable (K) is 0.00. Ferroglobe's overall GF Score™ is 69/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Reserves - Probable (K) calculated?
Reserves - Probable (K) is calculated from a company's financial statements. For Ferroglobe (GSM), the current Reserves - Probable (K) is 0.00 as of Mar. 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 Ferroglobe (GSM) Overvalued in 2026?

Based on GuruFocus' analysis, Ferroglobe stock appears to be undervalued. The current stock price of $3.35 is trading 19.5% below its estimated GF Value™ of $4.16. GuruFocus considers Ferroglobe to be Modestly Undervalued.

Key valuation signals for GSM:

  • Reserves - Probable (K): 0.00
  • GF Value™: $4.16 vs. price of $3.35 (19.5% below fair value)
  • GF Score™: 69/100 with 2 warning signs

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

Ferroglobe Business Description

Other Exchanges 5FG:Germany
Address 13 Chesterfield Street, London, GBR, W1J 5JN
Ferroglobe PLC provides silicon-based alloys and specialty metals. It produces silicon metal and silicon and manganese-based alloy, serving customers in the specialty chemical, aluminum, solar, steel, and ductile iron foundry industries. The company's operating segments include Canada - Silicon Metals, Canada - Silicon Alloys, U.S. - Silicon Metals, U.S. - Silicon Alloys, Europe - Manganese Alloys, Europe - Silicon Metals, Europe - Silicon Alloys, South Africa - Silicon Metals, South Africa - Silicon Alloys, and Other segments. The primary raw materials the company uses to produce its electrometallurgy products include its coal and quartz mining operations and its silicon metal and ferroalloy production. The firm generates key revenue from Silicon metal and Manganese-based alloys.
69GF Score

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Reserves - Probable (K) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$3.35
Price
$4.16
GF Value