West Pharmaceutical ServicesWST +1.66%95 PS Ratio is 7.70 as of Jun. 24, 2026, which is 18% above its 10-year median of 6.54. GuruFocus rates WST with a GF Score™ of 95/100 and a GF Value™ of $361.52 (Fairly Valued). The stock has 9 warning signs investors should review. Among 804 Medical Devices & Instruments companies, West Pharmaceutical Services ranks worse than 79.6% on this metric.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. As of today, West Pharmaceutical Services's share price is $341.96.
West Pharmaceutical Services's Revenue per Share for the trailing twelve months (TTM) ended in Mar. 2026 was $44.40. Hence, West Pharmaceutical Services's PS Ratio for today is 7.70.
Warning Sign:
West Pharmaceutical Services Inc stock PS Ratio (=7.58) is close to 1-year high of 7.58.
The historical rank and industry rank for West Pharmaceutical Services's PS Ratio or its related term are showing as below:
WST'
s PS Ratio Range Over the Past 10 Years
Min: 3.6 Med: 6.54 Max: 13.97
Current: 7.7
During the past 13 years, West Pharmaceutical Services's highest PS Ratio was 13.97. The lowest was 3.60. And the median was 6.54.
WST's PS Ratio is ranked worse than 79.6% of 804
companies
in the Medical Devices & Instruments industry
Industry Median: 2.855
vs WST: 7.70
During the past 13 years, West Pharmaceutical Services's highest 3-Year average Revenue per Share Growth Rate was 17.80% per year. The lowest was -2.90% per year. And the median was 6.30% per year.
Back to Basics: PS Ratio
West Pharmaceutical Services (NYSE:WST) PS Ratio Explanation
The PS Ratio is an excellent valuation indicator if you want to compare a stock with its historical valuation or with the stocks in the same industry. The PS Ratio works especially well when you want to compare the stock's current valuation with its historical valuation. The PS Ratio is a great valuation tool for evaluating cyclical businesses where the PE Ratio works poorly. It works the best when comparing the current valuation with the historical valuation because over time, a company's profit margin tends to revert to the mean.
When the PS Ratio is applied to the whole stock market, it can be used to evaluate the current market valuation and projected returns. In this case, the price is the total market cap of all stocks that are traded, and sales are the GDP of the country. This is how Warren Buffett estimates the broad market valuation and project future returns.
The PS Ratio does not tell you how cheap or expensive the stock is. It cannot be used to compare companies in different industries. It works better for companies within the same industry because these companies tend to have similar capital structures and profit margins. It works the best when comparing a company with itself in the past.
West Pharmaceutical Services PS Ratio Related Terms
West Pharmaceutical Services PS 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.
For the Medical Instruments & Supplies subindustry, West Pharmaceutical Services's PS Ratio, along with its competitors' market caps and PS 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 PS Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, West Pharmaceutical Services's PS Ratio distribution charts can be found below:
* The bar in red indicates where West Pharmaceutical Services's PS Ratio falls into.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. It is a ratio widely used to value stocks and it was first used by Ken Fisher.
West Pharmaceutical Services's Share Price of today is $341.96. West Pharmaceutical Services's Revenue per Share for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was $44.40.
* 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.
It can also be calculated from the numbers for the whole company:
West Pharmaceutical Services (WST) has a PS Ratio of 7.70 as of Jun. 24, 2026. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on West Pharmaceutical Services and its competitors. This is 18% above median its historical median of 6.54. Over the past decade, West Pharmaceutical Services' PS Ratio has ranged from 3.60 to 13.97. According to the industry distribution chart, West Pharmaceutical Services ranks #640 out of 804 companies in the Medical Devices & Instruments industry, placing it in the top 79.6%.
Is West Pharmaceutical Services' PS Ratio too high?
West Pharmaceutical Services' current PS Ratio of 7.70 is 18% above median its 10-year median of 6.54. Over the past 10 years, this metric has ranged from a low of 3.60 to a high of 13.97. The Medical Devices & Instruments industry median PS Ratio is 2.86. West Pharmaceutical Services' value of 7.70 is 169.7% above this industry median. Based on the distribution chart, West Pharmaceutical Services ranks #640 out of 804 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 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does West Pharmaceutical Services' PS Ratio compare to RMD and MDLN?
According to the Medical Devices & Instruments industry distribution chart, West Pharmaceutical Services ranks #640 out of 804 companies for PS Ratio. This places West Pharmaceutical Services in the lower half of its industry. The industry median PS Ratio is 2.86. West Pharmaceutical Services' value of 7.70 is 169.7% above this benchmark. Historically, West Pharmaceutical Services' own PS Ratio has ranged from 3.60 to 13.97 over the past decade. While the company's 10-year median is 6.54 vs. the industry median of 2.86, 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 PS Ratio for a Medical Devices & Instruments company?
The median PS Ratio among Medical Devices & Instruments companies is 2.86, based on 804 companies in the industry. Companies in the top quartile (top 25%) have a PS Ratio significantly above this median, while those in the bottom quartile fall well below. However, PS Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. West Pharmaceutical Services's current PS Ratio of 7.70 is 169.7% 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 PS Ratio mean?
A high PS Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on West Pharmaceutical Services and its competitors. For the Medical Devices & Instruments industry, the median PS Ratio is 2.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. West Pharmaceutical Services's current PS Ratio is 7.70, which is 18% above median its own 10-year median of 6.54. 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?
Based on GuruFocus' analysis, West Pharmaceutical Services (WST) is currently considered Fairly Valued. The stock's GF Value™ is $361.52, compared to a current price of $341.96 — trading 5.4% below its estimated fair value. The current PS Ratio is 7.70, which is 18% above median its 10-year median of 6.54 and 169.7% above the Medical Devices & Instruments industry median of 2.86. West Pharmaceutical Services' overall GF Score™ is 95/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PS Ratio calculated?
PS Ratio is calculated from a company's financial statements. For West Pharmaceutical Services (WST), the current PS Ratio is 7.70 as of Jun. 24, 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 (WST) Overvalued in 2026?
Based on GuruFocus' analysis, West Pharmaceutical Services stock appears to be undervalued.
The current stock price of $341.96 is trading 5.4% below its estimated GF Value™ of $361.52.
GuruFocus considers West Pharmaceutical Services to be Fairly Valued.
Key valuation signals for WST:
PS Ratio: 7.70 (18% above median its 10-year median of 6.54)
GF Value™: $361.52 vs. price of $341.96 (5.4% below fair value)
Industry Position: 169.7% above the Medical Devices & Instruments median (#640 of 804)
No single metric tells the full story. See the 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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