LightLGSXY 40 PB Ratio is 0.14 as of Jun. 27, 2026, which is 81% below its 10-year median of 0.75. GuruFocus rates LGSXY with a GF Score™ of 40/100 and a GF Value™ of $0.62 (Possible Value Trap). The stock has 7 warning signs investors should review. Among 430 Utilities - Independent Power Producers companies, Light ranks better than 95.35% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-27), Light's share price is $0.45. Light's Book Value per Share for the quarter that ended in Mar. 2026 was $3.16. Hence, Light's PB Ratio of today is 0.14.
The historical rank and industry rank for Light's PB Ratio or its related term are showing as below:
LGSXY'
s PB Ratio Range Over the Past 10 Years
Min: 0.16 Med: 0.75 Max: 1.51
Current: 0.2
During the past 13 years, Light's highest PB Ratio was 1.51. The lowest was 0.16. And the median was 0.75.
During the past 12 months, Light's average Book Value Per Share Growth Rate was 47.60% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 24.20% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was -9.90% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was -4.30% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Light was 33.00% per year. The lowest was -28.40% per year. And the median was 4.20% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Light PB Ratio Related Terms
Light PB Ratio Historical Data
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The historical data trend for Light's 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.
For the Utilities - Renewable subindustry, Light's PB Ratio, along with its competitors' market caps and 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.
Light PB Ratio vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Light's PB Ratio distribution charts can be found below:
* The bar in red indicates where Light's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
Light's PB Ratio for today is calculated as follows:
* 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.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Light (LGSXY) has a PB Ratio of 0.14 as of Jun. 27, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Light and its competitors. This is 81% below median its historical median of 0.75. Over the past decade, Light's PB Ratio has ranged from 0.16 to 1.51. According to the industry distribution chart, Light ranks #20 out of 430 companies in the Utilities - Independent Power Producers industry, placing it in the top 4.7%.
Is Light's PB Ratio too high?
Light's current PB Ratio of 0.14 is 81% below median its 10-year median of 0.75. Over the past 10 years, this metric has ranged from a low of 0.16 to a high of 1.51. The Utilities - Independent Power Producers industry median PB Ratio is 1.36. Light's value of 0.14 is 89.7% below this industry median. Based on the distribution chart, Light ranks #20 out of 430 companies in the Utilities - Independent Power Producers industry, which is in the top quartile — a strong position relative to peers. Overall, Light has a GF Score™ of 40/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Light's PB Ratio compare to competitors?
According to the Utilities - Independent Power Producers industry distribution chart, Light ranks #20 out of 430 companies for PB Ratio. This places Light in the top 5% of its industry — outperforming the majority of peers. The industry median PB Ratio is 1.36. Light's value of 0.14 is 89.7% below this benchmark. Historically, Light's own PB Ratio has ranged from 0.16 to 1.51 over the past decade. While the company's 10-year median is 0.75 vs. the industry median of 1.36, Light has consistently been below 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 PB Ratio for an Utilities - Independent Power Producers company?
The median PB Ratio among Utilities - Independent Power Producers companies is 1.36, based on 430 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Light's current PB Ratio of 0.14 is 89.7% below 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 PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Light and its competitors. For the Utilities - Independent Power Producers industry, the median PB Ratio is 1.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Light's current PB Ratio is 0.14, which is 81% below median its own 10-year median of 0.75. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Light stock overvalued right now?
Based on GuruFocus' analysis, Light (LGSXY) is currently considered Possible Value Trap. The stock's GF Value™ is $0.62, compared to a current price of $0.45 — trading 27.4% below its estimated fair value. The current PB Ratio is 0.14, which is 81% below median its 10-year median of 0.75 and 89.7% below the Utilities - Independent Power Producers industry median of 1.36. Light's overall GF Score™ is 40/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Light (LGSXY), the current PB Ratio is 0.14 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 Light (LGSXY) Overvalued in 2026?
Based on GuruFocus' analysis, Light stock appears to be undervalued.
The current stock price of $0.45 is trading 27.4% below its estimated GF Value™ of $0.62.
GuruFocus considers Light to be Possible Value Trap.
Key valuation signals for LGSXY:
PB Ratio: 0.14 (81% below median its 10-year median of 0.75)
GF Value™: $0.62 vs. price of $0.45 (27.4% below fair value)
Industry Position: 89.7% below the Utilities - Independent Power Producers median (#20 of 430)
No single metric tells the full story. See the LGSXY stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Light SA is a Brazilian private-public utility of which the state-owned power company, CEMIG, wields a controlling stake. The company generates, distributes, and trades energy. To do this, the company owns and operates a portfolio of hydroelectric power plants that serve the Brazilian state of Rio de Janeiro. Light derives maximum of its revenue from the supplying of energy, with network usage and the construction of assets also bringing in substantial amounts of revenue. The vast majority of the company's customers are residential consumers. The company operates in three segments namely: Distribution, Generation and Trading, out of which maximum revenue is generated from Distribution segment.
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