Bayer AG (WAR:BAY) Cyclically Adjusted Book per Share: zł189.88 (As of Mar. 2026)


WAR:BAY Bayer AG WAR:BAY
44 GF Score
Price zł226.70
GF Value zł115.73
Valuation Significantly Overvalued
! 7 Warning Signs
View Full Analysis

What is Bayer AG Cyclically Adjusted Book per Share?

Bayer AG WAR:BAY 44 Cyclically Adjusted Book per Share is zł189.88 as of Mar. 2026. GuruFocus rates WAR:BAY with a GF Score™ of 44/100 and a GF Value™ of zł115.73 (Significantly Overvalued). The stock has 7 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 zł127.928. 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 zł189.88 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 (2026-07-07), Bayer AG's current stock price is zł226.70. Bayer AG's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was zł189.88. Bayer AG's Cyclically Adjusted PB Ratio of today is 1.19.

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 1.50.


Bayer AG  (WAR:BAY) 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
=226.70/189.88
=1.19

* 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 1.50.


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 0.00 0.00 187.70 181.99 184.32

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 186.50 188.85 185.79 184.32 189.88

WAR:BAY 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.


WAR:BAY
44GF Score
Bayer AG WAR:BAY
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)
=127.928/131.2583*131.2583
=127.928

Current CPI (Mar. 2026) = 131.2583.

Bayer AG Quarterly Data

Book Value per Share CPI Adj_Book
201606 114.490 100.717 149.208
201609 117.759 101.017 153.013
201612 143.508 101.217 186.101
201703 161.256 101.417 208.705
201706 164.536 102.117 211.490
201709 198.839 102.717 254.089
201712 195.331 102.617 249.849
201803 204.306 102.917 260.567
201806 222.591 104.017 280.885
201809 236.945 104.718 296.999
201812 211.005 104.217 265.754
201903 218.786 104.217 275.554
201906 194.094 105.718 240.986
201909 194.201 106.018 240.436
201912 201.417 105.818 249.842
202003 206.053 105.718 255.834
202006 154.246 106.618 189.894
202009 141.554 105.818 175.586
202012 142.451 105.518 177.201
202103 157.963 107.518 192.842
202106 140.459 108.486 169.943
202109 140.376 109.435 168.370
202112 143.134 110.384 170.202
202203 158.170 113.968 182.166
202206 154.177 115.760 174.818
202209 156.763 118.818 173.176
202212 157.568 119.345 173.297
202303 167.843 122.402 179.987
202306 153.567 123.140 163.691
202309 136.665 124.195 144.438
202312 137.750 123.773 146.081
202403 148.468 125.038 155.854
202406 147.368 125.882 153.663
202409 130.114 126.198 135.332
202412 128.176 127.041 132.431
202503 134.568 127.779 138.232
202506 134.380 128.412 137.359
202509 133.180 129.255 135.244
202512 116.557 129.361 118.267
202603 127.928 131.258 127.928

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 zł189.88 mean?
Bayer AG (WAR:BAY) has a Cyclically Adjusted Book per Share of zł189.88 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 zł189.88. Overall, Bayer AG has a GF Score™ of 44/100 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 zł189.88 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 zł189.88. 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 (WAR:BAY) is currently considered Significantly Overvalued. The stock's GF Value™ is zł115.73, compared to a current price of zł226.70 — trading 95.9% above its estimated fair value. The current Cyclically Adjusted Book per Share is zł189.88. Bayer AG's overall GF Score™ is 44/100 with 7 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 (WAR:BAY), the current Cyclically Adjusted Book per Share is zł189.88 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 (WAR:BAY) Overvalued in 2026?

Based on GuruFocus' analysis, Bayer AG stock appears to be overvalued. The current stock price of zł226.70 is trading 95.9% above its estimated GF Value™ of zł115.73. GuruFocus considers Bayer AG to be Significantly Overvalued.

Key valuation signals for WAR:BAY:

  • Cyclically Adjusted Book per Share: zł189.88
  • GF Value™: zł115.73 vs. price of zł226.70 (95.9% above fair value)
  • GF Score™: 44/100 with 7 warning signs

No single metric tells the full story. See the WAR:BAY 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.
44GF Score

Get the complete analysis for WAR:BAY

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

zł226.70
Price
zł115.73
GF Value