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Carl Zeiss Meditec AGSTU:AFX -2.14%78 Cyclically Adjusted PB Ratio is 1.54 as of Sep. 14, 2026, which is 80% below its 10-year median of 7.78. GuruFocus rates STU:AFX with a GF Score™ of 78/100 and a GF Value™ of €73.79 (Significantly Undervalued). The stock has 4 warning signs investors should review. Among 513 Medical Devices & Instruments companies, Carl Zeiss Meditec AG ranks worse than 194931.58% on this metric.
The historical rank and industry rank for Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio or its related term are showing as below:
During the past 13 years, Carl Zeiss Meditec AG's highest Cyclically Adjusted PB Ratio was 16.02. The lowest was 2.05. And the median was 7.78.
STU:AFX's Cyclically Adjusted PB Ratio is not ranked *
in the Medical Devices & Instruments industry.
Industry Median: 1.8 * Ranked among companies with meaningful Cyclically Adjusted PB Ratio only.
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.
Carl Zeiss Meditec AG's adjusted book value per share data of for the fiscal year that ended in Sep25 was €24.179. 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 €19.69 for the trailing ten years ended in Sep25.
Shiller PE for Stocks: The True Measure of Stock Valuation
Carl Zeiss Meditec AG (STU:AFX) 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.
Carl Zeiss Meditec AG Cyclically Adjusted PB Ratio Related Terms
Carl Zeiss Meditec AG Cyclically Adjusted PB Ratio Historical Data
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The historical data trend for Carl Zeiss Meditec 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.
Carl Zeiss Meditec AG Cyclically Adjusted PB Ratio Chart
STU:AFX vs ISRG, BDX, RMD: Cyclically Adjusted PB Ratio Comparison
For the Medical Instruments & Supplies subindustry, Carl Zeiss Meditec 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.
Carl Zeiss Meditec AG Cyclically Adjusted PB Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio falls into.
Carl Zeiss Meditec 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.
* 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.
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 1.54 mean?
Carl Zeiss Meditec AG (STU:AFX) has a Cyclically Adjusted PB Ratio of 1.54 as of Sep. 14, 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 Carl Zeiss Meditec AG and its competitors. This is 80% below median its historical median of 7.78. Over the past decade, Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio has ranged from 2.05 to 16.02. According to the industry distribution chart, Carl Zeiss Meditec AG ranks #999999 out of 513 companies in the Medical Devices & Instruments industry.
Is Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio too high?
Carl Zeiss Meditec AG's current Cyclically Adjusted PB Ratio of 1.54 is 80% below median its 10-year median of 7.78. Over the past 10 years, this metric has ranged from a low of 2.05 to a high of 16.02. The Medical Devices & Instruments industry median Cyclically Adjusted PB Ratio is 1.80. Carl Zeiss Meditec AG's value of 1.54 is 14.4% below this industry median. Based on the distribution chart, Carl Zeiss Meditec AG ranks #999999 out of 513 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, Carl Zeiss Meditec AG has a GF Score™ of 78/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Carl Zeiss Meditec AG's Cyclically Adjusted PB Ratio compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Carl Zeiss Meditec AG ranks #999999 out of 513 companies for Cyclically Adjusted PB Ratio. This places Carl Zeiss Meditec AG in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.80. Carl Zeiss Meditec AG's value of 1.54 is 14.4% below this benchmark. Historically, Carl Zeiss Meditec AG's own Cyclically Adjusted PB Ratio has ranged from 2.05 to 16.02 over the past decade. While the company's 10-year median is 7.78 vs. the industry median of 1.80, Carl Zeiss Meditec 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 Medical Devices & Instruments company?
The median Cyclically Adjusted PB Ratio among Medical Devices & Instruments companies is 1.80, based on 513 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. Carl Zeiss Meditec AG's current Cyclically Adjusted PB Ratio of 1.54 is 14.4% 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 Carl Zeiss Meditec AG and its competitors. For the Medical Devices & Instruments industry, the median Cyclically Adjusted PB Ratio is 1.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Carl Zeiss Meditec AG's current Cyclically Adjusted PB Ratio is 1.54, which is 80% below median its own 10-year median of 7.78. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Carl Zeiss Meditec AG stock overvalued right now?
Based on GuruFocus' analysis, Carl Zeiss Meditec AG (STU:AFX) is currently considered Significantly Undervalued. The stock's GF Value™ is €73.79, compared to a current price of €30.24 — trading 59% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.54, which is 80% below median its 10-year median of 7.78 and 14.4% below the Medical Devices & Instruments industry median of 1.80. Carl Zeiss Meditec AG's overall GF Score™ is 78/100 with 4 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 Carl Zeiss Meditec AG (STU:AFX), the current Cyclically Adjusted PB Ratio is 1.54 as of Sep. 14, 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 Carl Zeiss Meditec AG (STU:AFX) Overvalued in 2026?
Based on GuruFocus' analysis, Carl Zeiss Meditec AG stock appears to be undervalued.
The current stock price of €30.24 is trading 59% below its estimated GF Value™ of €73.79.
GuruFocus considers Carl Zeiss Meditec AG to be Significantly Undervalued.
Key valuation signals for STU:AFX:
Cyclically Adjusted PB Ratio: 1.54 (80% below median its 10-year median of 7.78)
GF Value™: €73.79 vs. price of €30.24 (59% below fair value)
Industry Position: 14.4% below the Medical Devices & Instruments median (#999999 of 513)
No single metric tells the full story. See the STU:AFX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Carl Zeiss Meditec is one of the largest visioncare technology companies in the world, and it operates in two segments: ophthalmic devices and microsurgery. OPT, which made up about 75% of sales in 2025, includes refractive lasers, surgical ophthalmic devices, equipment for ophthalmic diagnostics, as well as a portfolio of intraocular lenses and disposable medical instruments. With a low-teens share of the market, Zeiss is the second-largest player in the space. MCS is composed of implants, surgical instruments, and visualization devices used during neurosurgery, spine surgery, and otolaryngology surgery. With over 60% market share, Zeiss is the clear leader in the microsurgery space.
78GF Score
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