Bayer AG (BSE:BAYN) Cyclically Adjusted Book per Share: lei227.40 (As of Mar. 2026)

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BSE:BAYN Bayer AG BSE:BAYN
70 GF Score
Price lei239.90
GF Value lei142.76
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Bayer AG Cyclically Adjusted Book per Share?

Bayer AG BSE:BAYN -0.99% 70 Cyclically Adjusted Book per Share is lei227.40 as of Mar. 2026. GuruFocus rates BSE:BAYN with a GF Score™ of 70/100 and a GF Value™ of lei142.76 (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 PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Bayer AG's adjusted book value per share for the three months ended in Mar. 2026 was lei155.707. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is lei227.40 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Bayer AG's average Cyclically Adjusted Book Growth Rate was 1.20% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 3.20% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 5.90% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 6.90% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Bayer AG was 9.30% per year. The lowest was 0.80% per year. And the median was 6.80% per year.

As of today (2026-07-25), Bayer AG's current stock price is lei239.90. Bayer AG's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was lei227.40. Bayer AG's Cyclically Adjusted PB Ratio of today is 1.05.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Bayer AG was 4.72. The lowest was 0.43. And the median was 1.48.


Bayer AG  (BSE:BAYN) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Bayer AG's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=239.90/227.40
=1.05

* 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 Cyclically Adjusted PB Ratio of Bayer AG was 4.72. The lowest was 0.43. And the median was 1.48.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Bayer AG Cyclically Adjusted Book per Share Related Terms


Bayer AG Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Bayer AG's Cyclically Adjusted Book per Share 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.

Bayer AG Cyclically Adjusted Book per Share Chart

Bayer AG Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 180.40 203.68 216.05 211.77 221.54

Bayer AG Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share 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 221.05 228.79 223.83 221.54 227.40

BSE:BAYN vs LLY, JNJ, ABBV: Cyclically Adjusted Book per Share Comparison

For the Drug Manufacturers - General subindustry, Bayer AG's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted 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.


Bayer AG Cyclically Adjusted PB Ratio vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Bayer AG's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Bayer AG's Cyclically Adjusted PB Ratio falls into.


BSE:BAYN
70GF Score
Bayer AG BSE:BAYN
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Bayer AG Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

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

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, Bayer AG's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=155.707/131.2583*131.2583
=155.707

Current CPI (Mar. 2026) = 131.2583.

Bayer AG Quarterly Data

Book Value per Share CPI Adj_Book
201606 139.351 100.717 181.608
201609 143.330 101.017 186.239
201612 174.670 101.217 226.512
201703 196.272 101.417 254.024
201706 200.265 102.117 257.415
201709 242.016 102.717 309.263
201712 237.747 102.617 304.104
201803 248.670 102.917 317.148
201806 270.926 104.017 341.879
201809 288.398 104.718 361.493
201812 256.825 104.217 323.462
201903 266.295 104.217 335.390
201906 236.241 105.718 293.315
201909 236.371 106.018 292.646
201912 245.155 105.818 304.095
202003 250.797 105.718 311.388
202006 187.740 106.618 231.129
202009 172.292 105.818 213.714
202012 173.384 105.518 215.681
202103 192.265 107.518 234.718
202106 170.959 108.486 206.845
202109 170.859 109.435 204.932
202112 174.216 110.384 207.162
202203 192.517 113.968 221.724
202206 187.656 115.760 212.779
202209 190.804 118.818 210.782
202212 191.783 119.345 210.927
202303 204.290 122.402 219.071
202306 186.914 123.140 199.236
202309 166.341 124.195 175.802
202312 167.663 123.773 177.803
202403 180.708 125.038 189.698
202406 179.369 125.882 187.030
202409 158.368 126.198 164.719
202412 156.009 127.041 161.188
202503 163.790 127.779 168.250
202506 163.561 128.412 167.187
202509 162.100 129.255 164.612
202512 141.868 129.361 143.949
202603 155.707 131.258 155.707

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of lei227.40 mean?
Bayer AG (BSE:BAYN) has a Cyclically Adjusted Book per Share of lei227.40 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Bayer AG and its competitors.
Is Bayer AG's Cyclically Adjusted Book per Share too high?
Bayer AG's current Cyclically Adjusted Book per Share is lei227.40. Overall, Bayer AG has a GF Score™ of 70/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Bayer AG's Cyclically Adjusted Book per Share compare to LLY and JNJ?
Bayer AG's Cyclically Adjusted Book per Share of lei227.40 can be compared against companies in the Drug Manufacturers industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Drug Manufacturers company?
A good Cyclically Adjusted Book per Share depends on the Drug Manufacturers industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Bayer AG and its competitors. Bayer AG's current Cyclically Adjusted Book per Share is lei227.40. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Bayer AG stock overvalued right now?
Based on GuruFocus' analysis, Bayer AG (BSE:BAYN) is currently considered Significantly Overvalued. The stock's GF Value™ is lei142.76, compared to a current price of lei239.90 — trading 68% above its estimated fair value. The current Cyclically Adjusted Book per Share is lei227.40. Bayer AG's overall GF Score™ is 70/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Bayer AG (BSE:BAYN), the current Cyclically Adjusted Book per Share is lei227.40 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 Bayer AG (BSE:BAYN) Overvalued in 2026?

Based on GuruFocus' analysis, Bayer AG stock appears to be overvalued. The current stock price of lei239.90 is trading 68% above its estimated GF Value™ of lei142.76. GuruFocus considers Bayer AG to be Significantly Overvalued.

Key valuation signals for BSE:BAYN:

  • Cyclically Adjusted Book per Share: lei227.40
  • GF Value™: lei142.76 vs. price of lei239.90 (68% above fair value)
  • GF Score™: 70/100 with 2 warning signs

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


Bayer AG Business Description

Address Kaiser-Wilhelm-Allee 1, Leverkusen, NW, DEU, 51368
Bayer is a German healthcare and agriculture conglomerate. Healthcare provides close to half of the company's sales and includes pharmaceutical drugs (about 38% of total sales in 2025) as well as vitamins and other consumer healthcare products (13% of total). The firm's crop science business (47% of total) sells seeds, pesticides, herbicides, and fungicides, which was expanded through its 2018 acquisition of Monsanto.
70GF Score

Get the complete analysis for BSE:BAYN

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

lei239.90
Price
lei142.76
GF Value