West Pharmaceutical ServicesWST +1.75%95 Days Inventory is 74.57 as of Mar. 2026, which is 0% below its 10-year median of 74.88. 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 786 Medical Devices & Instruments companies, West Pharmaceutical Services ranks better than 88.68% on this metric.
Inventory Turnover measures how fast the company turns over its inventory within a year.
West Pharmaceutical Services's Inventory Turnover for the
three
months ended in Mar. 2026 was 1.22.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
West Pharmaceutical Services's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.53.
West Pharmaceutical Services (NYSE:WST) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
West Pharmaceutical Services's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
West Pharmaceutical Services's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* 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.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
West Pharmaceutical Services Days Inventory Related Terms
West Pharmaceutical Services Days Inventory 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 Days Inventory, along with its competitors' market caps and Days Inventory 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 Days Inventory vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, West Pharmaceutical Services's Days Inventory distribution charts can be found below:
* The bar in red indicates where West Pharmaceutical Services's Days Inventory falls into.
* 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 (WST) has a Days Inventory of 74.57 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on West Pharmaceutical Services and its competitors. This is near median its historical median of 74.88. Over the past decade, West Pharmaceutical Services' Days Inventory has ranged from 66.57 to 85.16. According to the industry distribution chart, West Pharmaceutical Services ranks #89 out of 786 companies in the Medical Devices & Instruments industry, placing it in the top 11.3%.
Is West Pharmaceutical Services' Days Inventory too high?
West Pharmaceutical Services' current Days Inventory of 74.57 is near median its 10-year median of 74.88. Over the past 10 years, this metric has ranged from a low of 66.57 to a high of 85.16. The Medical Devices & Instruments industry median Days Inventory is 179.86. West Pharmaceutical Services' value of 74.57 is 58.5% below this industry median. Based on the distribution chart, West Pharmaceutical Services ranks #89 out of 786 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position 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' Days Inventory compare to RMD and MDLN?
According to the Medical Devices & Instruments industry distribution chart, West Pharmaceutical Services ranks #89 out of 786 companies for Days Inventory. This places West Pharmaceutical Services in the top 11% of its industry — outperforming the majority of peers. The industry median Days Inventory is 179.86. West Pharmaceutical Services' value of 74.57 is 58.5% below this benchmark. Historically, West Pharmaceutical Services' own Days Inventory has ranged from 66.57 to 85.16 over the past decade. While the company's 10-year median is 74.88 vs. the industry median of 179.86, West Pharmaceutical Services 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 Days Inventory for a Medical Devices & Instruments company?
The median Days Inventory among Medical Devices & Instruments companies is 179.86, based on 786 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. West Pharmaceutical Services's current Days Inventory of 74.57 is 58.5% 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 Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on West Pharmaceutical Services and its competitors. For the Medical Devices & Instruments industry, the median Days Inventory is 179.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. West Pharmaceutical Services's current Days Inventory is 74.57, which is near median its own 10-year median of 74.88. 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 $342.27 — trading 5.3% below its estimated fair value. The current Days Inventory is 74.57, which is near median its 10-year median of 74.88 and 58.5% below the Medical Devices & Instruments industry median of 179.86. 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 Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For West Pharmaceutical Services (WST), the current Days Inventory is 74.57 as of Mar. 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 $342.27 is trading 5.3% below its estimated GF Value™ of $361.52.
GuruFocus considers West Pharmaceutical Services to be Fairly Valued.
Key valuation signals for WST:
Days Inventory: 74.57 (near median its 10-year median of 74.88)
GF Value™: $361.52 vs. price of $342.27 (5.3% below fair value)
Industry Position: 58.5% below the Medical Devices & Instruments median (#89 of 786)
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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