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WatersWAT +0.77%94 Shiller PE Ratio is 44.12 as of Sep. 22, 2026, which is 15% above its 10-year median of 38.38. GuruFocus rates WAT with a GF Score™ of 94/100 and a GF Value™ of $416.08 (Fairly Valued). The stock has 7 warning signs investors should review. Among 78 Medical Diagnostics & Research companies, Waters ranks worse than 71.79% on this metric.
As of today (2026-09-22), Waters's current share price is $427.1725. Waters's E10 for the quarter that ended in Jun. 2026 was $9.68. Waters's Shiller PE Ratio for today is 44.12.
The historical rank and industry rank for Waters's Shiller PE Ratio or its related term are showing as below:
WAT'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 28.26 Med: 38.38 Max: 63.57
Current: 44.08
During the past years, Waters's highest Shiller PE Ratio was 63.57. The lowest was 28.26. And the median was 38.38.
WAT's Shiller PE Ratio is ranked worse than 71.79% of 78
companies
in the Medical Diagnostics & Research industry
Industry Median: 30.52
vs WAT: 44.08
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.
Waters's adjusted earnings per share data for the three months ended in Jun. 2026 was $-1.385. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $9.68 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
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.
Waters Shiller PE Ratio Related Terms
Waters Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Waters's Shiller PE 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.
For the Diagnostics & Research subindustry, Waters'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.
Waters Shiller PE Ratio vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Waters's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Waters's Shiller PE Ratio falls into.
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.
Waters's Shiller PE Ratio for today 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.
Waters's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Waters's adjusted earnings per share data for the three months ended in Jun. 2026 was:
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.
Waters (WAT) has a Shiller PE Ratio of 44.12 as of Sep. 22, 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 Waters and its competitors. This is 15% above median its historical median of 38.38. Over the past decade, Waters' Shiller PE Ratio has ranged from 28.26 to 63.57. According to the industry distribution chart, Waters ranks #56 out of 78 companies in the Medical Diagnostics & Research industry, placing it in the top 71.8%.
Is Waters' Shiller PE Ratio too high?
Waters' current Shiller PE Ratio of 44.12 is 15% above median its 10-year median of 38.38. Over the past 10 years, this metric has ranged from a low of 28.26 to a high of 63.57. The Medical Diagnostics & Research industry median Shiller PE Ratio is 30.52. Waters' value of 44.12 is 44.6% above this industry median. Based on the distribution chart, Waters ranks #56 out of 78 companies in the Medical Diagnostics & Research industry, which is below the industry midpoint. Overall, Waters has a GF Score™ of 94/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Waters' Shiller PE Ratio compare to IQV and A?
According to the Medical Diagnostics & Research industry distribution chart, Waters ranks #56 out of 78 companies for Shiller PE Ratio. This places Waters in the lower half of its industry. The industry median Shiller PE Ratio is 30.52. Waters' value of 44.12 is 44.6% above this benchmark. Historically, Waters' own Shiller PE Ratio has ranged from 28.26 to 63.57 over the past decade. While the company's 10-year median is 38.38 vs. the industry median of 30.52, Waters 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 Diagnostics & Research company?
The median Shiller PE Ratio among Medical Diagnostics & Research companies is 30.52, based on 78 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. Waters's current Shiller PE Ratio of 44.12 is 44.6% 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 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 Waters and its competitors. For the Medical Diagnostics & Research industry, the median Shiller PE Ratio is 30.52 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Waters's current Shiller PE Ratio is 44.12, which is 15% above median its own 10-year median of 38.38. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Waters stock overvalued right now?
Based on GuruFocus' analysis, Waters (WAT) is currently considered Fairly Valued. The stock's GF Value™ is $416.08, compared to a current price of $427.17 — trading 2.7% above its estimated fair value. The current Shiller PE Ratio is 44.12, which is 15% above median its 10-year median of 38.38 and 44.6% above the Medical Diagnostics & Research industry median of 30.52. Waters' overall GF Score™ is 94/100 with 7 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 Waters (WAT), the current Shiller PE Ratio is 44.12 as of Sep. 22, 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 Waters (WAT) Overvalued in 2026?
Based on GuruFocus' analysis, Waters stock appears to be overvalued.
The current stock price of $427.17 is trading 2.7% above its estimated GF Value™ of $416.08.
GuruFocus considers Waters to be Fairly Valued.
Key valuation signals for WAT:
Shiller PE Ratio: 44.12 (15% above median its 10-year median of 38.38)
GF Value™: $416.08 vs. price of $427.17 (2.7% above fair value)
Industry Position: 44.6% above the Medical Diagnostics & Research median (#56 of 78)
No single metric tells the full story. See the WAT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Waters Corp is an analytical laboratory instrument and software company. It operates through Waters and TA Instruments segments, offering liquid chromatography, mass spectrometry, thermal analysis, and rheometry systems, along with columns, consumables, and informatics software such as Empower. Its products are used to identify, quantify, and characterize the chemical and physical properties of materials. Customers include pharmaceutical and biopharmaceutical companies, life science and clinical laboratories, academic and government research institutions, and industrial firms in chemicals, food and beverage, environmental testing, and materials science. Waters sells globally, with significant revenue from the United States, Europe, and Asia, particularly China. Revenue is generated through instrument sales and a large recurring stream from consumables, service, and software maintenance. The company is headquartered in Milford, Massachusetts.
94GF Score
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