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

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WAR:BAY Bayer AG WAR:BAY
45 GF Score
Price zł208.70
GF Value zł115.76
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Bayer AG Cyclically Adjusted Book per Share?

Bayer AG WAR:BAY +1.66% 45 Cyclically Adjusted Book per Share is zł189.88 as of Mar. 2026. GuruFocus rates WAR:BAY with a GF Score™ of 45/100 and a GF Value™ of zł115.76 (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 zł126.752. 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 (2026-07-30), Bayer AG's current stock price is zł208.70. 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 1.10.

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  (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
=208.70/189.88
=1.10

* 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 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
45GF 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)
=126.752/131.2583*131.2583
=126.752

Current CPI (Mar. 2026) = 131.2583.

Bayer AG Quarterly Data

Book Value per Share CPI Adj_Book
201606 113.438 100.717 147.837
201609 116.677 101.017 151.607
201612 142.189 101.217 184.391
201703 159.774 101.417 206.787
201706 163.024 102.117 209.546
201709 197.012 102.717 251.754
201712 193.536 102.617 247.553
201803 202.429 102.917 258.173
201806 220.546 104.017 278.305
201809 234.768 104.718 294.270
201812 209.067 104.217 263.313
201903 216.776 104.217 273.022
201906 192.311 105.718 238.772
201909 192.417 106.018 238.227
201912 199.567 105.818 247.547
202003 204.159 105.718 253.483
202006 152.829 106.618 188.149
202009 140.253 105.818 173.973
202012 141.142 105.518 175.573
202103 156.512 107.518 191.071
202106 139.168 108.486 168.381
202109 139.086 109.435 166.823
202112 141.819 110.384 168.639
202203 156.717 113.968 180.493
202206 152.760 115.760 173.211
202209 155.323 118.818 171.586
202212 156.120 119.345 171.704
202303 166.301 122.402 178.333
202306 152.157 123.140 162.188
202309 135.409 124.195 143.111
202312 136.485 123.773 144.739
202403 147.104 125.038 154.422
202406 146.014 125.882 152.251
202409 128.919 126.198 134.089
202412 126.998 127.041 131.214
202503 133.332 127.779 136.962
202506 133.146 128.412 136.097
202509 131.956 129.255 134.001
202512 115.486 129.361 117.180
202603 126.752 131.258 126.752

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 45/100 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 zł115.76, compared to a current price of zł208.70 — trading 80.3% above its estimated fair value. The current Cyclically Adjusted Book per Share is zł189.88. Bayer AG's overall GF Score™ is 45/100 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 (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 zł208.70 is trading 80.3% above its estimated GF Value™ of zł115.76. GuruFocus considers Bayer AG to be Significantly Overvalued.

Key valuation signals for WAR:BAY:

  • Cyclically Adjusted Book per Share: zł189.88
  • GF Value™: zł115.76 vs. price of zł208.70 (80.3% above fair value)
  • GF Score™: 45/100 with 2 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.
45GF 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.

zł208.70
Price
zł115.76
GF Value