BRAIN Biotech AG (HAM:BNN) E10: €-1.87 (As of Mar. 2026)


HAM:BNN BRAIN Biotech AG HAM:BNN
69 GF Score
Price €2.82
GF Value €2.56
Valuation Modestly Overvalued
! 2 Warning Signs
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What is BRAIN Biotech AG E10?

BRAIN Biotech AG HAM:BNN 69 E10 is €-1.87 as of Mar. 2026. GuruFocus rates HAM:BNN with a GF Score™ of 69/100 and a GF Value™ of €2.56 (Modestly 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.

BRAIN Biotech AG's adjusted earnings per share data for the three months ended in Mar. 2026 was €-0.160. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €-1.87 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 (2026-06-28), BRAIN Biotech AG's current stock price is €2.82. BRAIN Biotech AG's E10 for the quarter that ended in Mar. 2026 was €-1.87. BRAIN Biotech AG's Shiller PE Ratio of today is .


BRAIN Biotech AG  (HAM:BNN) 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.


BRAIN Biotech AG E10 Related Terms


BRAIN Biotech AG E10 Historical Data

* Premium members only.

The historical data trend for BRAIN Biotech AG'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.

BRAIN Biotech AG E10 Chart

BRAIN Biotech AG Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 -1.89 -1.90

BRAIN Biotech AG 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 -1.92 -1.79 -1.90 -1.82 -1.87

HAM:BNN vs LIN, SHW, ECL: E10 Comparison

For the Specialty Chemicals subindustry, BRAIN Biotech AG'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.


BRAIN Biotech AG Shiller PE Ratio vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, BRAIN Biotech AG's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where BRAIN Biotech AG's Shiller PE Ratio falls into.


HAM:BNN
69GF Score
BRAIN Biotech AG HAM:BNN
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

BRAIN Biotech AG 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, BRAIN Biotech AG'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)
=-0.16/131.2583*131.2583
=-0.160

Current CPI (Mar. 2026) = 131.2583.

BRAIN Biotech AG Quarterly Data

per share eps CPI Adj_EPS
201606 -0.150 100.717 -0.195
201609 -0.390 101.017 -0.507
201612 -0.280 101.217 -0.363
201703 -0.080 101.417 -0.104
201706 -10.000 102.117 -12.854
201709 -0.120 102.717 -0.153
201712 -0.130 102.617 -0.166
201803 -0.130 102.917 -0.166
201806 -0.120 104.017 -0.151
201809 -0.060 104.718 -0.075
201812 -0.070 104.217 -0.088
201903 -0.160 104.217 -0.202
201906 -0.220 105.718 -0.273
201909 -0.160 106.018 -0.198
201912 -0.130 105.818 -0.161
202003 -0.140 105.718 -0.174
202006 -0.100 106.618 -0.123
202009 -0.160 105.818 -0.198
202012 -0.170 105.518 -0.211
202103 0.100 107.518 0.122
202106 -0.100 108.486 -0.121
202109 -0.080 109.435 -0.096
202112 -0.110 110.384 -0.131
202203 -0.070 113.968 -0.081
202206 -0.120 115.760 -0.136
202209 0.000 118.818 0.000
202212 -0.120 119.345 -0.132
202303 -0.100 122.402 -0.107
202306 -0.080 123.140 -0.085
202309 -0.080 124.195 -0.085
202312 -0.120 123.773 -0.127
202403 -0.090 125.038 -0.094
202406 -0.120 125.882 -0.125
202409 -0.180 126.198 -0.187
202412 -0.180 127.041 -0.186
202503 -0.140 127.779 -0.144
202506 -0.030 128.412 -0.031
202509 -0.190 129.255 -0.193
202512 -0.130 129.361 -0.132
202603 -0.160 131.258 -0.160

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 €-1.87 mean?
BRAIN Biotech AG (HAM:BNN) has a E10 of €-1.87 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on BRAIN Biotech AG and its competitors.
Is BRAIN Biotech AG's E10 too high?
BRAIN Biotech AG's current E10 is €-1.87. Overall, BRAIN Biotech AG has a GF Score™ of 69/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does BRAIN Biotech AG's E10 compare to LIN and SHW?
BRAIN Biotech AG's E10 of €-1.87 can be compared against companies in the Chemicals 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 Chemicals company?
A good E10 depends on the Chemicals 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 BRAIN Biotech AG and its competitors. BRAIN Biotech AG's current E10 is €-1.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BRAIN Biotech AG stock overvalued right now?
Based on GuruFocus' analysis, BRAIN Biotech AG (HAM:BNN) is currently considered Modestly Overvalued. The stock's GF Value™ is €2.56, compared to a current price of €2.82 — trading 10.2% above its estimated fair value. The current E10 is €-1.87. BRAIN Biotech AG's overall GF Score™ is 69/100 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 BRAIN Biotech AG (HAM:BNN), the current E10 is €-1.87 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 BRAIN Biotech AG (HAM:BNN) Overvalued in 2026?

Based on GuruFocus' analysis, BRAIN Biotech AG stock appears to be overvalued. The current stock price of €2.82 is trading 10.2% above its estimated GF Value™ of €2.56. GuruFocus considers BRAIN Biotech AG to be Modestly Overvalued.

Key valuation signals for HAM:BNN:

  • E10: €-1.87
  • GF Value™: €2.56 vs. price of €2.82 (10.2% above fair value)
  • GF Score™: 69/100 with 2 warning signs

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


BRAIN Biotech AG Business Description

Other Exchanges 0RFI:UKBNN:Germany
Address Darmstadter Strasse 34-36, Zwingenberg, BW, DEU, 64673
BRAIN Biotech AG is an industrial biotechnology specialist focused on enzyme technology, microbial production strains, and bioprocess design to enable bio-based innovations. The Group conducts research, development, and production for client specifications and its own product portfolio, supporting customers in the food and beverage, chemical, and life sciences industries with solutions that enhance productivity, efficiency, and sustainability. Its operations are organized into two segments: BRAIN Biocatalysts, which develops, produces, and distributes specialty enzymes, microorganisms, and ingredients and generates the majority of revenue, and BRAIN BioIncubator, which focuses on development projects. The company operates in Germany and other countries.
69GF Score

Get the complete analysis for HAM:BNN

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

€2.82
Price
€2.56
GF Value