Bayer AG (BSE:BAYN) Cyclically Adjusted PB Ratio: 1.15 (As of Sep. 09, 2026) — 22% Below Median

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BSE:BAYN Bayer AG BSE:BAYN
72 GF Score
Price lei258.70
GF Value lei138.11
Valuation Significantly Overvalued
! 6 Warning Signs
View Full Analysis

What is Bayer AG Cyclically Adjusted PB Ratio?

Bayer AG BSE:BAYN -0.50% 72 Cyclically Adjusted PB Ratio is 1.15 as of Sep. 09, 2026, which is 22% below its 10-year median of 1.47. GuruFocus rates BSE:BAYN with a GF Score™ of 72/100 and a GF Value™ of lei138.11 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 634 Drug Manufacturers companies, Bayer AG ranks better than 66.88% on this metric.

As of today (2026-09-09), Bayer AG's current share price is lei258.70. Bayer AG's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was lei224.88. Bayer AG's Cyclically Adjusted PB Ratio for today is 1.15.

The historical rank and industry rank for Bayer AG's Cyclically Adjusted PB Ratio or its related term are showing as below:

BSE:BAYN' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.43   Med: 1.47   Max: 4.72
Current: 1.09

During the past years, Bayer AG's highest Cyclically Adjusted PB Ratio was 4.72. The lowest was 0.43. And the median was 1.47.

BSE:BAYN's Cyclically Adjusted PB Ratio is ranked better than
66.88% of 634 companies
in the Drug Manufacturers industry
Industry Median: 1.71 vs BSE:BAYN: 1.09

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 adjusted book value per share data for the three months ended in Jun. 2026 was lei156.665. 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 lei224.88 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Bayer AG  (BSE:BAYN) 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

BSE:BAYN 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.


BSE:BAYN
72GF Score
Bayer AG BSE:BAYN
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

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 PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=258.70/224.88
=1.15

* 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'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)
=156.665/131.3638*131.3638
=156.665

Current CPI (Jun. 2026) = 131.3638.

Bayer AG Quarterly Data

Book Value per Share CPI Adj_Book
201609 141.098 101.017 183.486
201612 171.949 101.217 223.163
201703 193.215 101.417 250.269
201706 197.145 102.117 253.608
201709 238.247 102.717 304.692
201712 234.043 102.617 299.607
201803 244.797 102.917 312.460
201806 266.706 104.017 336.824
201809 283.905 104.718 356.147
201812 252.825 104.217 318.680
201903 262.147 104.217 330.431
201906 232.561 105.718 288.978
201909 232.690 106.018 288.320
201912 241.336 105.818 299.599
202003 246.890 105.718 306.783
202006 184.816 106.618 227.712
202009 169.608 105.818 210.554
202012 170.683 105.518 212.491
202103 189.270 107.518 231.247
202106 168.296 108.486 203.787
202109 168.197 109.435 201.901
202112 171.502 110.384 204.099
202203 189.518 113.968 218.445
202206 184.733 115.760 209.633
202209 187.832 118.818 207.665
202212 188.796 119.345 207.809
202303 201.108 122.402 215.832
202306 184.003 123.140 196.291
202309 163.750 124.195 173.203
202312 165.051 123.773 175.173
202403 177.893 125.038 186.893
202406 176.575 125.882 184.265
202409 155.901 126.198 162.283
202412 153.579 127.041 158.805
202503 161.238 127.779 165.761
202506 161.013 128.412 164.714
202509 159.575 129.255 162.178
202512 139.658 129.361 141.821
202603 153.282 131.258 153.405
202606 156.665 131.364 156.665

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.

What does a Cyclically Adjusted PB Ratio of 1.15 mean?
Bayer AG (BSE:BAYN) has a Cyclically Adjusted PB Ratio of 1.15 as of Sep. 09, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Bayer AG and its competitors. This is 22% below median its historical median of 1.47. Over the past decade, Bayer AG's Cyclically Adjusted PB Ratio has ranged from 0.43 to 4.72. According to the industry distribution chart, Bayer AG ranks #210 out of 634 companies in the Drug Manufacturers industry, placing it in the top 33.1%.
Is Bayer AG's Cyclically Adjusted PB Ratio too high?
Bayer AG's current Cyclically Adjusted PB Ratio of 1.15 is 22% below median its 10-year median of 1.47. Over the past 10 years, this metric has ranged from a low of 0.43 to a high of 4.72. The Drug Manufacturers industry median Cyclically Adjusted PB Ratio is 1.71. Bayer AG's value of 1.15 is 32.7% below this industry median. Based on the distribution chart, Bayer AG ranks #210 out of 634 companies in the Drug Manufacturers industry, which is above the industry midpoint. Overall, Bayer AG has a GF Score™ of 72/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Bayer AG's Cyclically Adjusted PB Ratio compare to LLY and JNJ?
According to the Drug Manufacturers industry distribution chart, Bayer AG ranks #210 out of 634 companies for Cyclically Adjusted PB Ratio. This puts Bayer AG in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.71. Bayer AG's value of 1.15 is 32.7% below this benchmark. Historically, Bayer AG's own Cyclically Adjusted PB Ratio has ranged from 0.43 to 4.72 over the past decade. While the company's 10-year median is 1.47 vs. the industry median of 1.71, Bayer AG has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Drug Manufacturers company?
The median Cyclically Adjusted PB Ratio among Drug Manufacturers companies is 1.71, based on 634 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Bayer AG's current Cyclically Adjusted PB Ratio of 1.15 is 32.7% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Bayer AG and its competitors. For the Drug Manufacturers industry, the median Cyclically Adjusted PB Ratio is 1.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Bayer AG's current Cyclically Adjusted PB Ratio is 1.15, which is 22% below median its own 10-year median of 1.47. 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 lei138.11, compared to a current price of lei258.70 — trading 87.3% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.15, which is 22% below median its 10-year median of 1.47 and 32.7% below the Drug Manufacturers industry median of 1.71. Bayer AG's overall GF Score™ is 72/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Bayer AG (BSE:BAYN), the current Cyclically Adjusted PB Ratio is 1.15 as of Sep. 09, 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 lei258.70 is trading 87.3% above its estimated GF Value™ of lei138.11. GuruFocus considers Bayer AG to be Significantly Overvalued.

Key valuation signals for BSE:BAYN:

  • Cyclically Adjusted PB Ratio: 1.15 (22% below median its 10-year median of 1.47)
  • GF Value™: lei138.11 vs. price of lei258.70 (87.3% above fair value)
  • GF Score™: 72/100 with 6 warning signs
  • Industry Position: 32.7% below the Drug Manufacturers median (#210 of 634)

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.
72GF Score

Get the complete analysis for BSE:BAYN

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

lei258.70
Price
lei138.11
GF Value