EnerSys (STU:FDN) E10: €4.95 (As of Jun. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

STU:FDN EnerSys STU:FDN
81 GF Score
Price €165.40
GF Value €100.37
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is EnerSys E10?

EnerSys STU:FDN -4.56% 81 E10 is €4.95 as of Jun. 2026. GuruFocus rates STU:FDN with a GF Score™ of 81/100 and a GF Value™ of €100.37 (Significantly Overvalued). The stock has 2 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.

EnerSys's adjusted earnings per share data for the three months ended in Jun. 2026 was €2.682. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €4.95 for the trailing ten years ended in Jun. 2026.

During the past 12 months, EnerSys's average E10 Growth Rate was 14.20% per year. During the past 3 years, the average E10 Growth Rate was 10.60% per year. During the past 5 years, the average E10 Growth Rate was 8.80% per year. During the past 10 years, the average E10 Growth Rate was 7.60% per year. 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 EnerSys was 30.90% per year. The lowest was 5.60% per year. And the median was 8.95% per year.

As of today (2026-08-20), EnerSys's current stock price is €165.40. EnerSys's E10 for the quarter that ended in Jun. 2026 was €4.95. EnerSys's Shiller PE Ratio of today is 33.41.

During the past 13 years, the highest Shiller PE Ratio of EnerSys was 43.32. The lowest was 12.14. And the median was 22.53.


EnerSys  (STU:FDN) 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.

EnerSys's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=165.40/4.95
=33.41

* 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.

During the past 13 years, the highest Shiller P/E Ratio of EnerSys was 43.32. The lowest was 12.14. And the median was 22.53.


Be Aware

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


EnerSys E10 Related Terms


EnerSys E10 Historical Data

* Premium members only.

The historical data trend for EnerSys'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.

EnerSys E10 Chart

EnerSys Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.47 3.67 4.08 4.53 4.69

EnerSys Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 4.23 4.24 4.42 4.69 4.95

STU:FDN vs POWL, FPS, AYI: E10 Comparison

For the Electrical Equipment & Parts subindustry, EnerSys'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.


EnerSys Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, EnerSys's Shiller PE Ratio distribution charts can be found below:

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


STU:FDN
81GF Score
EnerSys STU:FDN
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

EnerSys 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, EnerSys's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=2.682/333.9520*333.9520
=2.682

Current CPI (Jun. 2026) = 333.9520.

EnerSys Quarterly Data

per share eps CPI Adj_EPS
201609 0.927 241.428 1.282
201612 0.777 241.432 1.075
201703 0.711 243.801 0.974
201706 0.970 244.955 1.322
201709 0.839 246.819 1.135
201712 -0.515 246.524 -0.698
201803 1.030 249.554 1.378
201806 0.924 251.989 1.225
201809 0.951 252.439 1.258
201812 0.984 251.233 1.308
201903 0.372 254.202 0.489
201906 1.000 256.143 1.304
201909 1.335 256.759 1.736
201912 0.576 256.974 0.749
202003 -0.036 258.115 -0.047
202006 0.728 257.797 0.943
202009 0.705 260.280 0.905
202012 0.732 260.474 0.938
202103 0.655 264.877 0.826
202106 0.838 271.696 1.030
202109 0.697 274.310 0.849
202112 0.752 278.802 0.901
202203 0.608 287.504 0.706
202206 0.710 296.311 0.800
202209 0.848 296.808 0.954
202212 1.020 296.797 1.148
202303 1.485 301.836 1.643
202306 1.477 305.109 1.617
202309 1.462 307.789 1.586
202312 1.706 306.746 1.857
202403 1.362 312.332 1.456
202406 1.589 314.175 1.689
202409 1.811 315.301 1.918
202412 2.750 315.605 2.910
202503 2.229 319.799 2.328
202506 1.266 322.561 1.311
202509 1.534 324.800 1.577
202512 2.050 324.054 2.113
202603 1.773 330.213 1.793
202606 2.682 333.952 2.682

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 €4.95 mean?
EnerSys (STU:FDN) has a E10 of €4.95 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on EnerSys and its competitors.
Is EnerSys' E10 too high?
EnerSys' current E10 is €4.95. Overall, EnerSys has a GF Score™ of 81/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does EnerSys' E10 compare to POWL and FPS?
EnerSys' E10 of €4.95 can be compared against companies in the Industrial Products 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 Industrial Products company?
A good E10 depends on the Industrial Products 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 EnerSys and its competitors. EnerSys's current E10 is €4.95. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is EnerSys stock overvalued right now?
Based on GuruFocus' analysis, EnerSys (STU:FDN) is currently considered Significantly Overvalued. The stock's GF Value™ is €100.37, compared to a current price of €165.40 — trading 64.8% above its estimated fair value. The current E10 is €4.95. EnerSys' overall GF Score™ is 81/100 with 2 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 EnerSys (STU:FDN), the current E10 is €4.95 as of Jun. 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 EnerSys (STU:FDN) Overvalued in 2026?

Based on GuruFocus' analysis, EnerSys stock appears to be overvalued. The current stock price of €165.40 is trading 64.8% above its estimated GF Value™ of €100.37. GuruFocus considers EnerSys to be Significantly Overvalued.

Key valuation signals for STU:FDN:

  • E10: €4.95
  • GF Value™: €100.37 vs. price of €165.40 (64.8% above fair value)
  • GF Score™: 81/100 with 2 warning signs

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


EnerSys Business Description

Other Exchanges ENS:USA
Address 2366 Bernville Road, Reading, PA, USA, 19605
EnerSys provides stored energy solutions for industrial applications. It also manufactures and distributes energy systems solutions and motive power batteries, specialty batteries, battery chargers, power equipment, battery accessories, and outdoor equipment enclosure solutions to customers. Energy Systems that combine enclosures, power conversion, power distribution, and energy storage are used in the telecommunication and broadband, utility industries, uninterruptible power supplies, and numerous applications requiring stored energy solutions. Its segments include Energy Systems, Motive Power, New Ventures, and Specialty.
81GF Score

Get the complete analysis for STU:FDN

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

€165.40
Price
€100.37
GF Value