The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100. Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
WST's 9-Day RSI is ranked worse than 98.28% of 870
companies
in the Medical Devices & Instruments industry
Industry Median: 46.455
vs WST: 80.16
West Pharmaceutical Services (NYSE:WST) 9-Day RSI Explanation
The Relative Strength Index (RSI), developed by J. Welles Wilder in his book “New Concepts in Technical Trading Systems.”, is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100.
Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A RSI surpasses the 30 level indicates a bullish sign, when it slides below 70 level, it’s a bearish sign. This level can be adjusted depending on the security’s pattern and the market’s underlying trend. In an uptrend or bullish market, the RSI might range within a higher interval, investors could set the support level higher. If a downtrend or bearish market occurs, investors may need to lower the resistance level.
RSI can also be used in trading techniques to indicate the trading signal, such as Divergences and Swing Rejections. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
West Pharmaceutical Services 9-Day RSI Related Terms
WST vs RMD, MDLN, COO: 9-Day RSI Comparison
For the Medical Instruments & Supplies subindustry, West Pharmaceutical Services's 9-Day RSI, along with its competitors' market caps and 9-Day RSI 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 9-Day RSI vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, West Pharmaceutical Services's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where West Pharmaceutical Services's 9-Day RSI falls into.
West Pharmaceutical Services (NYSE:WST) 9-Day RSI Calculation
The formula for calculating RSI is:
RSI
=
100
–
[ 100
/
( 1 + Average Gain
/
Average Loss )]
* Note that the formula uses a positive value for the average loss.
* 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 9-Day RSI of 80.16 as of Jun. 30, 2026. According to the industry distribution chart, West Pharmaceutical Services ranks #855 out of 870 companies in the Medical Devices & Instruments industry, placing it in the top 98.3%.
Is West Pharmaceutical Services' 9-Day RSI too high?
West Pharmaceutical Services' current 9-Day RSI is 80.16. The Medical Devices & Instruments industry median 9-Day RSI is 46.46. West Pharmaceutical Services' value of 80.16 is 72.6% above this industry median. Based on the distribution chart, West Pharmaceutical Services ranks #855 out of 870 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' 9-Day RSI compare to RMD and MDLN?
According to the Medical Devices & Instruments industry distribution chart, West Pharmaceutical Services ranks #855 out of 870 companies for 9-Day RSI. This places West Pharmaceutical Services in the lower half of its industry. The industry median 9-Day RSI is 46.46. West Pharmaceutical Services' value of 80.16 is 72.6% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 9-Day RSI for a Medical Devices & Instruments company?
The median 9-Day RSI among Medical Devices & Instruments companies is 46.46, based on 870 companies in the industry. Companies in the top quartile (top 25%) have a 9-Day RSI significantly above this median, while those in the bottom quartile fall well below. However, 9-Day RSI should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. West Pharmaceutical Services's current 9-Day RSI of 80.16 is 72.6% 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 9-Day RSI mean?
A high 9-Day RSI can signal that a stock is expensive relative to its fundamentals. For the Medical Devices & Instruments industry, the median 9-Day RSI is 46.46 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. West Pharmaceutical Services's current 9-Day RSI is 80.16. 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 $361.62, compared to a current price of $359.00 — trading 0.7% below its estimated fair value. The current 9-Day RSI is 80.16 and 72.6% above the Medical Devices & Instruments industry median of 46.46. 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 9-Day RSI calculated?
9-Day RSI is calculated from a company's financial statements. For West Pharmaceutical Services (WST), the current 9-Day RSI is 80.16 as of Jun. 30, 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 $359.00 is trading 0.7% below its estimated GF Value™ of $361.62.
GuruFocus considers West Pharmaceutical Services to be Fairly Valued.
Key valuation signals for WST:
9-Day RSI: 80.16
GF Value™: $361.62 vs. price of $359.00 (0.7% below fair value)
Industry Position: 72.6% above the Medical Devices & Instruments median (#855 of 870)
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.
95GF Score
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