Bayer AG (WAR:BAY) Cyclically Adjusted PB Ratio: (As of Aug. 08, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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
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.

WAR:BAY Bayer AG WAR:BAY
45 GF Score
Price zł214.10
GF Value zł114.94
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Bayer AG Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Bayer AG  (WAR:BAY) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Bayer AG Cyclically Adjusted PB Ratio Related Terms


Bayer AG Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Bayer AG's Cyclically Adjusted PB Ratio 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 PB Ratio Chart

Bayer AG Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.30 1.20 0.79 0.44 0.84

Bayer AG Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 0.58 0.63 0.84 0.88 1.08

WAR:BAY vs LLY, JNJ, ABBV: Cyclically Adjusted PB Ratio 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 PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Bayer AG Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Bayer AG's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

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

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=129.03/131.3638*131.3638
=129.030

Current CPI (Jun. 2026) = 131.3638.

Bayer AG Quarterly Data

Book Value per Share CPI Adj_Book
201609 116.208 101.017 151.119
201612 141.617 101.217 183.797
201703 159.131 101.417 206.120
201706 162.369 102.117 208.872
201709 196.219 102.717 250.942
201712 192.758 102.617 246.756
201803 201.614 102.917 257.341
201806 219.658 104.017 277.407
201809 233.824 104.718 293.323
201812 208.226 104.217 262.464
201903 215.904 104.217 272.142
201906 191.537 105.718 238.002
201909 191.643 106.018 237.460
201912 198.764 105.818 246.749
202003 203.338 105.718 252.666
202006 152.214 106.618 187.543
202009 139.689 105.818 173.412
202012 140.574 105.518 175.007
202103 155.882 107.518 190.454
202106 138.608 108.486 167.838
202109 138.527 109.435 166.286
202112 141.249 110.384 168.096
202203 156.087 113.968 179.912
202206 152.146 115.760 172.654
202209 154.698 118.818 171.033
202212 155.492 119.345 171.151
202303 165.632 122.402 177.758
202306 151.544 123.140 161.664
202309 134.865 124.195 142.650
202312 135.936 123.773 144.273
202403 146.512 125.038 153.924
202406 145.427 125.882 151.761
202409 128.400 126.198 133.656
202412 126.487 127.041 130.791
202503 132.796 127.779 136.521
202506 132.610 128.412 135.659
202509 131.426 129.255 133.570
202512 115.022 129.361 116.803
202603 126.242 131.258 126.343
202606 129.030 131.364 129.030

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

Is Bayer AG (WAR:BAY) Overvalued in 2026?

Based on GuruFocus' analysis, Bayer AG stock appears to be overvalued. The current stock price of zł214.10 is trading 86.3% above its estimated GF Value™ of zł114.94. GuruFocus considers Bayer AG to be Significantly Overvalued.

Key valuation signals for WAR:BAY:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: zł114.94 vs. price of zł214.10 (86.3% above fair value)
  • GF Score™: 45/100 with 6 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 PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

zł214.10
Price
zł114.94
GF Value