BrainCool AB (STU:5YL) E10: €-0.04 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
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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.
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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:5YL BrainCool AB STU:5YL
68 GF Score
Price €0.06
GF Value €0.09
Valuation Possible Value Trap
! 4 Warning Signs
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What is BrainCool AB E10?

BrainCool AB STU:5YL 68 E10 is €-0.04 as of Mar. 2026. GuruFocus rates STU:5YL with a GF Score™ of 68/100 and a GF Value™ of €0.09 (Possible Value Trap). The stock has 4 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.

BrainCool AB's adjusted earnings per share data for the three months ended in Mar. 2026 was €-0.002. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €-0.04 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.

As of today (2026-07-28), BrainCool AB's current stock price is €0.061. BrainCool AB's E10 for the quarter that ended in Mar. 2026 was €-0.04. BrainCool AB's Shiller PE Ratio of today is .


BrainCool AB  (STU:5YL) 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.


Be Aware

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


BrainCool AB E10 Related Terms


BrainCool AB E10 Historical Data

* Premium members only.

The historical data trend for BrainCool AB'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.

BrainCool AB E10 Chart

BrainCool AB 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 0.00 0.00 0.00 -0.05 -0.03

BrainCool AB 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 -0.05 -0.05 -0.04 -0.03 -0.04

STU:5YL vs ABT, SYK, MDT: E10 Comparison

For the Medical Devices subindustry, BrainCool AB'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.


BrainCool AB Shiller PE Ratio vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, BrainCool AB's Shiller PE Ratio distribution charts can be found below:

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


STU:5YL
68GF Score
BrainCool AB STU:5YL
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

BrainCool AB 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, BrainCool AB'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)
=-0.002/133.5600*133.5600
=-0.002

Current CPI (Mar. 2026) = 133.5600.

BrainCool AB Quarterly Data

per share eps CPI Adj_EPS
201606 -0.009 101.019 -0.012
201609 -0.009 101.138 -0.012
201612 -0.013 102.022 -0.017
201703 -0.020 102.022 -0.026
201706 -0.015 102.752 -0.019
201709 -0.013 103.279 -0.017
201712 -0.012 103.793 -0.015
201803 -0.012 103.962 -0.015
201806 -0.014 104.875 -0.018
201809 -0.011 105.679 -0.014
201812 -0.034 105.912 -0.043
201903 -0.019 105.886 -0.024
201906 -0.022 106.742 -0.028
201909 -0.018 107.214 -0.022
201912 -0.028 107.766 -0.035
202003 -0.014 106.563 -0.018
202006 -0.009 107.498 -0.011
202009 -0.007 107.635 -0.009
202012 -0.011 108.296 -0.014
202103 -0.008 108.360 -0.010
202106 -0.008 108.928 -0.010
202109 -0.008 110.338 -0.010
202112 -0.025 112.486 -0.030
202203 -0.011 114.825 -0.013
202206 -0.014 118.384 -0.016
202209 -0.010 122.296 -0.011
202212 -0.006 126.365 -0.006
202303 -0.007 127.042 -0.007
202306 -0.005 129.407 -0.005
202309 -0.006 130.224 -0.006
202312 -0.011 131.912 -0.011
202403 -0.006 132.205 -0.006
202406 -0.004 132.716 -0.004
202409 -0.004 132.304 -0.004
202412 -0.003 132.987 -0.003
202503 -0.003 132.825 -0.003
202506 -0.004 133.699 -0.004
202509 -0.004 133.480 -0.004
202512 -0.003 133.390 -0.003
202603 -0.002 133.560 -0.002

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 €-0.04 mean?
BrainCool AB (STU:5YL) has a E10 of €-0.04 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on BrainCool AB and its competitors.
Is BrainCool AB's E10 too high?
BrainCool AB's current E10 is €-0.04. Overall, BrainCool AB has a GF Score™ of 68/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does BrainCool AB's E10 compare to ABT and SYK?
BrainCool AB's E10 of €-0.04 can be compared against companies in the Medical Devices & Instruments 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 a Medical Devices & Instruments company?
A good E10 depends on the Medical Devices & Instruments 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 BrainCool AB and its competitors. BrainCool AB's current E10 is €-0.04. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BrainCool AB stock overvalued right now?
Based on GuruFocus' analysis, BrainCool AB (STU:5YL) is currently considered Possible Value Trap. The stock's GF Value™ is €0.09, compared to a current price of €0.06 — trading 32.2% below its estimated fair value. The current E10 is €-0.04. BrainCool AB's overall GF Score™ is 68/100 with 4 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 BrainCool AB (STU:5YL), the current E10 is €-0.04 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 BrainCool AB (STU:5YL) Overvalued in 2026?

Based on GuruFocus' analysis, BrainCool AB stock appears to be undervalued. The current stock price of €0.06 is trading 32.2% below its estimated GF Value™ of €0.09. GuruFocus considers BrainCool AB to be Possible Value Trap.

Key valuation signals for STU:5YL:

  • E10: €-0.04
  • GF Value™: €0.09 vs. price of €0.06 (32.2% below fair value)
  • GF Score™: 68/100 with 4 warning signs

No single metric tells the full story. See the STU:5YL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


BrainCool AB Business Description

Other Exchanges BRAIN:Sweden
Address Scheelevagen 2, Lund, SWE, 22381
BrainCool AB is a medical device company engaged in developing, marketing, and selling medical cooling systems for diseases like stroke, oral mucositis, migraine, and sudden cardiac arrest.
68GF Score

Get the complete analysis for STU:5YL

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

€0.06
Price
€0.09
GF Value