Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Sigma LithiumSGML -2.78%46 Cyclically Adjusted PB Ratio is 19.48 as of Aug. 30, 2026, which is 12% below its 10-year median of 22.02. GuruFocus rates SGML with a GF Score™ of 46/100 and a GF Value™ of $8.14 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 1,502 Metals & Mining companies, Sigma Lithium ranks worse than 95.94% on this metric.
The historical rank and industry rank for Sigma Lithium's Cyclically Adjusted PB Ratio or its related term are showing as below:
SGML'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 8.09 Med: 22.02 Max: 77.86
Current: 19.01
During the past years, Sigma Lithium's highest Cyclically Adjusted PB Ratio was 77.86. The lowest was 8.09. And the median was 22.02.
SGML's Cyclically Adjusted PB Ratio is ranked worse than 95.94% of 1502
companies
in the Metals & Mining industry
Industry Median: 1.585
vs SGML: 19.01
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
Sigma Lithium's adjusted book value per share data for the three months ended in Jun. 2026 was $0.734. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $0.63 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Sigma Lithium (NAS:SGML) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
Sigma Lithium Cyclically Adjusted PB Ratio Related Terms
Sigma Lithium Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Sigma Lithium's Cyclically Adjusted PB Ratio 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.
Sigma Lithium Cyclically Adjusted PB Ratio Competitor Comparison
For the Other Industrial Metals & Mining subindustry, Sigma Lithium's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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.
Sigma Lithium Cyclically Adjusted PB Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Sigma Lithium's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Sigma Lithium's Cyclically Adjusted PB Ratio falls into.
Sigma Lithium Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
Sigma Lithium's Cyclically Adjusted PB Ratio for today 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 19.48 mean?
Sigma Lithium (SGML) has a Cyclically Adjusted PB Ratio of 19.48 as of Aug. 30, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Sigma Lithium and its competitors. This is 12% below median its historical median of 22.02. Over the past decade, Sigma Lithium's Cyclically Adjusted PB Ratio has ranged from 8.09 to 77.86. According to the industry distribution chart, Sigma Lithium ranks #1441 out of 1502 companies in the Metals & Mining industry, placing it in the top 95.9%.
Is Sigma Lithium's Cyclically Adjusted PB Ratio too high?
Sigma Lithium's current Cyclically Adjusted PB Ratio of 19.48 is 12% below median its 10-year median of 22.02. Over the past 10 years, this metric has ranged from a low of 8.09 to a high of 77.86. The Metals & Mining industry median Cyclically Adjusted PB Ratio is 1.59. Sigma Lithium's value of 19.48 is 1129% above this industry median. Based on the distribution chart, Sigma Lithium ranks #1441 out of 1502 companies in the Metals & Mining industry, which is in the bottom quartile relative to peers. Overall, Sigma Lithium has a GF Score™ of 46/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sigma Lithium's Cyclically Adjusted PB Ratio compare to competitors?
According to the Metals & Mining industry distribution chart, Sigma Lithium ranks #1441 out of 1502 companies for Cyclically Adjusted PB Ratio. This places Sigma Lithium in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.59. Sigma Lithium's value of 19.48 is 1129% above this benchmark. Historically, Sigma Lithium's own Cyclically Adjusted PB Ratio has ranged from 8.09 to 77.86 over the past decade. While the company's 10-year median is 22.02 vs. the industry median of 1.59, Sigma Lithium has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Metals & Mining company?
The median Cyclically Adjusted PB Ratio among Metals & Mining companies is 1.59, based on 1,502 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Sigma Lithium's current Cyclically Adjusted PB Ratio of 19.48 is 1129% 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Sigma Lithium and its competitors. For the Metals & Mining industry, the median Cyclically Adjusted PB Ratio is 1.59 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sigma Lithium's current Cyclically Adjusted PB Ratio is 19.48, which is 12% below median its own 10-year median of 22.02. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sigma Lithium stock overvalued right now?
Based on GuruFocus' analysis, Sigma Lithium (SGML) is currently considered Significantly Overvalued. The stock's GF Value™ is $8.14, compared to a current price of $12.27 — trading 50.7% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 19.48, which is 12% below median its 10-year median of 22.02 and 1129% above the Metals & Mining industry median of 1.59. Sigma Lithium's overall GF Score™ is 46/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Sigma Lithium (SGML), the current Cyclically Adjusted PB Ratio is 19.48 as of Aug. 30, 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 Sigma Lithium (SGML) Overvalued in 2026?
Based on GuruFocus' analysis, Sigma Lithium stock appears to be overvalued.
The current stock price of $12.27 is trading 50.7% above its estimated GF Value™ of $8.14.
GuruFocus considers Sigma Lithium to be Significantly Overvalued.
Key valuation signals for SGML:
Cyclically Adjusted PB Ratio: 19.48 (12% below median its 10-year median of 22.02)
GF Value™: $8.14 vs. price of $12.27 (50.7% above fair value)
Industry Position: 1129% above the Metals & Mining median (#1441 of 1502)
No single metric tells the full story. See the SGML stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sigma Lithium Corp together with its direct and indirect subsidiaries, is a commercial producer of lithium concentrate. It holds full interest in four mineral properties: Grota do Cirilo, Sao Jose, Santa Clara, and Genipapo, located in the municipalities of Aracuai and Itinga, in the Vale do Jequitinhonha region in the State of Minas Gerais, Brazil. Geographically, the company operates in Switzerland; United Arab Emirates; Singapore; and Republic of Korea, of which it derives maximum revenue from Switzerland.
46GF Score
Get the complete analysis for SGML
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
SGML has been successfully added to your 
