Light (BSP:LIGT3) E10: R$-0.01 (As of Mar. 2026)


BSP:LIGT3 Light SA BSP:LIGT3
61 GF Score
Price R$3.25
GF Value R$4.64
Valuation Possible Value Trap
! 7 Warning Signs
View Full Analysis

What is Light E10?

Light BSP:LIGT3 -3.56% 61 E10 is R$-0.01 as of Mar. 2026. GuruFocus rates BSP:LIGT3 with a GF Score™ of 61/100 and a GF Value™ of R$4.64 (Possible Value Trap). The stock has 7 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Light's adjusted earnings per share data for the three months ended in Mar. 2026 was R$2.020. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is R$-0.01 for the trailing ten years ended in Mar. 2026.

Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Light was 3.00% per year. The lowest was -60.80% per year. And the median was -38.80% per year.

As of today (2026-06-30), Light's current stock price is R$3.25. Light's E10 for the quarter that ended in Mar. 2026 was R$-0.01. Light's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Light was 34.46. The lowest was 1.56. And the median was 5.37.


Light  (BSP:LIGT3) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

During the past 13 years, the highest Shiller P/E Ratio of Light was 34.46. The lowest was 1.56. And the median was 5.37.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Light E10 Related Terms


Light E10 Historical Data

* Premium members only.

The historical data trend for Light's E10 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.

Light E10 Chart

Light Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.35 0.56 0.14 -0.13 -0.21

Light Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 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 -0.21 -0.18 -0.21 -0.21 -0.01

Light E10 Competitor Comparison

For the Utilities - Renewable subindustry, Light's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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 Shiller PE Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, Light's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Light's Shiller PE Ratio falls into.


BSP:LIGT3
61GF Score
Light SA BSP:LIGT3
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Light E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

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.

For example, Light's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=2.02/175.0655*175.0655
=2.020

Current CPI (Mar. 2026) = 175.0655.

Light Quarterly Data

per share eps CPI Adj_EPS
201606 -0.290 108.851 -0.466
201609 -0.300 109.986 -0.478
201612 -0.950 110.802 -1.501
201703 0.120 111.869 0.188
201706 -0.250 112.115 -0.390
201709 0.290 112.777 0.450
201712 0.450 114.068 0.691
201803 0.450 114.868 0.686
201806 -0.120 117.038 -0.179
201809 0.030 117.881 0.045
201812 0.450 118.340 0.666
201903 0.810 120.124 1.180
201906 0.050 120.977 0.072
201909 6.190 121.292 8.934
201912 -1.494 123.436 -2.119
202003 0.550 124.092 0.776
202006 -0.150 123.557 -0.213
202009 0.450 125.095 0.630
202012 1.427 129.012 1.936
202103 -0.110 131.660 -0.146
202106 0.010 133.871 0.013
202109 0.990 137.913 1.257
202112 0.190 141.992 0.234
202203 -0.290 146.537 -0.346
202206 -0.220 149.784 -0.257
202209 0.020 147.800 0.024
202212 -14.980 150.207 -17.459
202303 0.290 153.352 0.331
202306 0.300 154.519 0.340
202309 -0.030 155.464 -0.034
202312 0.150 157.148 0.167
202403 -0.970 159.372 -1.066
202406 -0.140 161.052 -0.152
202409 0.400 162.342 0.431
202412 3.758 164.740 3.994
202503 0.280 168.102 0.292
202506 -0.140 169.670 -0.144
202509 0.010 170.739 0.010
202512 -0.500 171.765 -0.510
202603 2.020 175.066 2.020

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of R$-0.01 mean?
Light (BSP:LIGT3) has a E10 of R$-0.01 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Light and its competitors.
Is Light's E10 too high?
Light's current E10 is R$-0.01. Overall, Light has a GF Score™ of 61/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Light's E10 compare to competitors?
Light's E10 of R$-0.01 can be compared against companies in the Utilities - Independent Power Producers industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Utilities - Independent Power Producers company?
A good E10 depends on the Utilities - Independent Power Producers industry context. However, E10 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 E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Light and its competitors. Light's current E10 is R$-0.01. 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 (BSP:LIGT3) is currently considered Possible Value Trap. The stock's GF Value™ is R$4.64, compared to a current price of R$3.25 — trading 30% below its estimated fair value. The current E10 is R$-0.01. Light's overall GF Score™ is 61/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Light (BSP:LIGT3), the current E10 is R$-0.01 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 Light (BSP:LIGT3) Overvalued in 2026?

Based on GuruFocus' analysis, Light stock appears to be undervalued. The current stock price of R$3.25 is trading 30% below its estimated GF Value™ of R$4.64. GuruFocus considers Light to be Possible Value Trap.

Key valuation signals for BSP:LIGT3:

  • E10: R$-0.01
  • GF Value™: R$4.64 vs. price of R$3.25 (30% below fair value)
  • GF Score™: 61/100 with 7 warning signs

No single metric tells the full story. See the BSP:LIGT3 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Light Business Description

Other Exchanges LGSXY:USA
Address Rua Marechal Floriano, No. 168, block 1-2nd floor, Rio de Janeiro, RJ, BRA, 20080-002
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.
61GF Score

Get the complete analysis for BSP:LIGT3

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

R$3.25
Price
R$4.64
GF Value