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West Pharmaceutical ServicesMEX:WST 95 Shiller PE Ratio is 54.56 as of Sep. 08, 2026, which is 20% below its 10-year median of 67.78. GuruFocus rates MEX:WST with a GF Score™ of 95/100 and a GF Value™ of MXN5,377.18. The stock has 8 warning signs investors should review. Among 311 Medical Devices & Instruments companies, West Pharmaceutical Services ranks worse than 83.92% on this metric.
The historical rank and industry rank for West Pharmaceutical Services's Shiller PE Ratio or its related term are showing as below:
MEX:WST'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 36.25 Med: 67.78 Max: 165.26
Current: 51.69
During the past years, West Pharmaceutical Services's highest Shiller PE Ratio was 165.26. The lowest was 36.25. And the median was 67.78.
MEX:WST's Shiller PE Ratio is ranked worse than 83.92% of 311
companies
in the Medical Devices & Instruments industry
Industry Median: 26.49
vs MEX:WST: 51.69
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.
West Pharmaceutical Services's adjusted earnings per share data for the three months ended in Jun. 2026 was MXN37.515. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is MXN93.71 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
West Pharmaceutical Services (MEX:WST) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
West Pharmaceutical Services Shiller PE Ratio Related Terms
West Pharmaceutical Services Shiller PE Ratio Historical Data
* 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.
West Pharmaceutical Services Shiller PE Ratio Chart
MEX:WST vs MDLN, SOLV, COO: Shiller PE Ratio Comparison
For the Medical Instruments & Supplies subindustry, West Pharmaceutical Services's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
West Pharmaceutical Services Shiller PE Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, West Pharmaceutical Services's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where West Pharmaceutical Services's Shiller PE Ratio falls into.
West Pharmaceutical Services Shiller PE Ratio Calculation
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
* 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.
Add all the adjusted EPS together and divide 10 will get our E10.
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.
West Pharmaceutical Services (MEX:WST) has a Shiller PE Ratio of 54.56 as of Sep. 08, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on West Pharmaceutical Services and its competitors. This is 20% below median its historical median of 67.78. Over the past decade, West Pharmaceutical Services' Shiller PE Ratio has ranged from 36.25 to 165.26. According to the industry distribution chart, West Pharmaceutical Services ranks #261 out of 311 companies in the Medical Devices & Instruments industry, placing it in the top 83.9%.
Is West Pharmaceutical Services' Shiller PE Ratio too high?
West Pharmaceutical Services' current Shiller PE Ratio of 54.56 is 20% below median its 10-year median of 67.78. Over the past 10 years, this metric has ranged from a low of 36.25 to a high of 165.26. The Medical Devices & Instruments industry median Shiller PE Ratio is 26.49. West Pharmaceutical Services' value of 54.56 is 106% above this industry median. Based on the distribution chart, West Pharmaceutical Services ranks #261 out of 311 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, West Pharmaceutical Services has a GF Score™ of 95/100, reflecting its overall financial health beyond just this single metric.
How does West Pharmaceutical Services' Shiller PE Ratio compare to MDLN and SOLV?
According to the Medical Devices & Instruments industry distribution chart, West Pharmaceutical Services ranks #261 out of 311 companies for Shiller PE Ratio. This places West Pharmaceutical Services in the lower half of its industry. The industry median Shiller PE Ratio is 26.49. West Pharmaceutical Services' value of 54.56 is 106% above this benchmark. Historically, West Pharmaceutical Services' own Shiller PE Ratio has ranged from 36.25 to 165.26 over the past decade. While the company's 10-year median is 67.78 vs. the industry median of 26.49, West Pharmaceutical Services has consistently been above 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 Shiller PE Ratio for a Medical Devices & Instruments company?
The median Shiller PE Ratio among Medical Devices & Instruments companies is 26.49, based on 311 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. West Pharmaceutical Services's current Shiller PE Ratio of 54.56 is 106% above 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on West Pharmaceutical Services and its competitors. For the Medical Devices & Instruments industry, the median Shiller PE Ratio is 26.49 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. West Pharmaceutical Services's current Shiller PE Ratio is 54.56, which is 20% below median its own 10-year median of 67.78. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is West Pharmaceutical Services stock overvalued right now?
West Pharmaceutical Services (MEX:WST) has a current Shiller PE Ratio of 54.56. The stock's GF Value™ is MXN5,377.18, compared to a current price of MXN5,112.51 — trading 4.9% below its estimated fair value. The current Shiller PE Ratio is 54.56, which is 20% below median its 10-year median of 67.78 and 106% above the Medical Devices & Instruments industry median of 26.49. West Pharmaceutical Services' overall GF Score™ is 95/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For West Pharmaceutical Services (MEX:WST), the current Shiller PE Ratio is 54.56 as of Sep. 08, 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 West Pharmaceutical Services (MEX:WST) Overvalued in 2026?
Based on GuruFocus' analysis, West Pharmaceutical Services stock appears to be undervalued.
The current stock price of MXN5,112.51 is trading 4.9% below its estimated GF Value™ of MXN5,377.18.
Key valuation signals for MEX:WST:
Shiller PE Ratio: 54.56 (20% below median its 10-year median of 67.78)
GF Value™: MXN5,377.18 vs. price of MXN5,112.51 (4.9% below fair value)
Industry Position: 106% above the Medical Devices & Instruments median (#261 of 311)
No single metric tells the full story. See the MEX:WST stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
West Pharmaceutical Services is based in Pennsylvania and is a key supplier to firms in the pharmaceutical, biotechnology, and generic drug industries. West sells elastomer-based packaging components (including stoppers, seals, and plungers), nonglass containment solutions, and auto-injectors for injectable drugs, which include large-molecule biologics, peptides such as GLP-1 receptor agonists, and small-molecule drugs. The company reports in two segments: proprietary products (about 80% of total revenue) and contract-manufactured products (about 20% of total revenue). It generates approximately 55% of its revenue from international markets and 45% from the United States.
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