Quest Diagnostics (STU:QDI) Cyclically Adjusted Revenue per Share: €76.33 (As of Jun. 2026)

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STU:QDI Quest Diagnostics Inc STU:QDI
78 GF Score
Price €203.20
GF Value €167.26
Valuation Modestly Overvalued
! 7 Warning Signs
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What is Quest Diagnostics Cyclically Adjusted Revenue per Share?

Quest Diagnostics STU:QDI -0.78% 78 Cyclically Adjusted Revenue per Share is €76.33 as of Jun. 2026. GuruFocus rates STU:QDI with a GF Score™ of 78/100 and a GF Value™ of €167.26 (Modestly Overvalued). The stock has 7 warning signs investors should review.

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Revenue per Share and the Cyclically Adjusted PS Ratio. The Cyclically Adjusted Revenue per Share is the average of the inflation adjusted Revenue per Share of a company over the past 10 years.

Quest Diagnostics's adjusted revenue per share for the three months ended in Jun. 2026 was €23.583. Add all the adjusted revenue per share for the past 10 years together and divide the count will get our Cyclically Adjusted Revenue per Share, which is €76.33 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Quest Diagnostics's average Cyclically Adjusted Revenue Growth Rate was 7.40% per year. During the past 3 years, the average Cyclically Adjusted Revenue Growth Rate was 6.00% per year. During the past 5 years, the average Cyclically Adjusted Revenue Growth Rate was 7.90% per year. During the past 10 years, the average Cyclically Adjusted Revenue Growth Rate was 6.70% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Revenue Growth Rate using Cyclically Adjusted Revenue per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Revenue Growth Rate of Quest Diagnostics was 10.00% per year. The lowest was 4.30% per year. And the median was 7.10% per year.

As of today (2026-07-31), Quest Diagnostics's current stock price is €203.20. Quest Diagnostics's Cyclically Adjusted Revenue per Share for the quarter that ended in Jun. 2026 was €76.33. Quest Diagnostics's Cyclically Adjusted PS Ratio of today is 2.66.

During the past 13 years, the highest Cyclically Adjusted PS Ratio of Quest Diagnostics was 2.78. The lowest was 1.36. And the median was 2.05.


Quest Diagnostics  (STU:QDI) Cyclically Adjusted Revenue per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Revenue per Share may underestimate the company's revenue. Cyclically Adjusted PS Ratio can seem to be too high even the actual PS Ratio is low.

For the Cyclically Adjusted PS Ratio, the revenue per share of the past 10 years are inflation-adjusted and averaged. The result is used for P/S calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PS Ratio is also called CAPS Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PS Ratio. The Cyclically Adjusted Revenue per Share is the average of the inflation adjusted revenue per share of a company over the past 10 years.

Quest Diagnostics's Cyclically Adjusted PS Ratio of today is calculated as

Cyclically Adjusted PS Ratio=Share Price/Cyclically Adjusted Revenue per Share
=203.20/76.33
=2.66

* 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.

During the past 13 years, the highest Cyclically Adjusted PS Ratio of Quest Diagnostics was 2.78. The lowest was 1.36. And the median was 2.05.


Be Aware

Cyclically Adjusted PS Ratio works better for cyclical companies. It gives you a better idea on the company's real revenue value.


Quest Diagnostics Cyclically Adjusted Revenue per Share Related Terms


Quest Diagnostics Cyclically Adjusted Revenue per Share Historical Data

* Premium members only.

The historical data trend for Quest Diagnostics's Cyclically Adjusted Revenue per Share 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.

Quest Diagnostics Cyclically Adjusted Revenue per Share Chart

Quest Diagnostics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Revenue per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 54.96 65.29 66.89 75.53 71.14

Quest Diagnostics Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted Revenue per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 68.78 69.59 71.14 73.89 76.33

STU:QDI vs LH, MTD, ILMN: Cyclically Adjusted Revenue per Share Comparison

For the Diagnostics & Research subindustry, Quest Diagnostics's Cyclically Adjusted PS Ratio, along with its competitors' market caps and Cyclically Adjusted 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.


Quest Diagnostics Cyclically Adjusted PS Ratio vs Medical Diagnostics & Research Industry

For the Medical Diagnostics & Research industry and Healthcare sector, Quest Diagnostics's Cyclically Adjusted PS Ratio distribution charts can be found below:

* The bar in red indicates where Quest Diagnostics's Cyclically Adjusted PS Ratio falls into.


STU:QDI
78GF Score
Quest Diagnostics Inc STU:QDI
Cyclically Adjusted Revenue per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Quest Diagnostics Cyclically Adjusted Revenue per Share Calculation

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. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Revenue per Share and the Cyclically Adjusted PS Ratio. The Cyclically Adjusted Revenue per Share is the average of the inflation adjusted Revenue per Share of a company over the past 10 years.

What is Cyclically Adjusted Revenue per Share? How do we calculate Cyclically Adjusted Revenue per Share?

Cyclically Adjusted Revenue per Share is the average of the inflation adjusted Revenue per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Revenue per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the revenue per share from 2001 through 2010.

We adjusted the 2001 revenue per share data with the total inflation from 2001 through 2010 to the equivalent revenue in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's revenue is $1 a share in 2001, then the 2001's equivalent revenue in 2010 is $1.4 a share. If Wal-Mart's revenue is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 revenue in 2010 is $1.35. So on and so forth, you get the equivalent revenue per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Revenue per Share.

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.

For example, Quest Diagnostics's adjusted Revenue per Share data for the three months ended in Jun. 2026 was:

Adj_RevenuePerShare= Revenue per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=23.583/333.9520*333.9520
=23.583

Current CPI (Jun. 2026) = 333.9520.

Quest Diagnostics Quarterly Data

Revenue per Share CPI Adj_RevenuePerShare
201609 11.828 241.428 16.361
201612 10.639 241.432 14.716
201703 12.049 243.801 16.504
201706 11.850 244.955 16.155
201709 11.123 246.819 15.050
201712 11.257 246.524 15.249
201803 10.992 249.554 14.709
201806 11.818 251.989 15.662
201809 11.647 252.439 15.408
201812 11.629 251.233 15.458
201903 12.305 254.202 16.165
201906 12.709 256.143 16.570
201909 12.964 256.759 16.862
201912 12.746 256.974 16.564
202003 12.214 258.115 15.803
202006 11.929 257.797 15.453
202009 17.265 260.280 22.152
202012 18.144 260.474 23.262
202103 16.924 264.877 21.337
202106 16.665 271.696 20.484
202109 18.863 274.310 22.964
202112 19.428 278.802 23.271
202203 19.593 287.504 22.758
202206 19.500 296.311 21.977
202209 21.278 296.808 23.941
202212 19.151 296.797 21.548
202303 19.267 301.836 21.317
202306 18.930 305.109 20.720
202309 18.863 307.789 20.466
202312 18.733 306.746 20.394
202403 19.435 312.332 20.780
202406 19.882 314.175 21.134
202409 19.838 315.301 21.011
202412 21.578 315.605 22.832
202503 21.709 319.799 22.670
202506 21.184 322.561 21.932
202509 21.232 324.800 21.830
202512 21.206 324.054 21.854
202603 22.359 330.213 22.612
202606 23.583 333.952 23.583

Add all the adjusted revenue per share together and divide 10 will get our Cyclically Adjusted Revenue per Share.

What does a Cyclically Adjusted Revenue per Share of €76.33 mean?
Quest Diagnostics (STU:QDI) has a Cyclically Adjusted Revenue per Share of €76.33 as of Jun. 2026. Cyclically adjusted revenue per share represents the company's inflation-adjusted revenue per share over a 10-year period. View historical data on Quest Diagnostics and its competitors.
Is Quest Diagnostics' Cyclically Adjusted Revenue per Share too high?
Quest Diagnostics' current Cyclically Adjusted Revenue per Share is €76.33. Overall, Quest Diagnostics has a GF Score™ of 78/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Quest Diagnostics' Cyclically Adjusted Revenue per Share compare to LH and MTD?
Quest Diagnostics' Cyclically Adjusted Revenue per Share of €76.33 can be compared against companies in the Medical Diagnostics & Research industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Revenue per Share for a Medical Diagnostics & Research company?
A good Cyclically Adjusted Revenue per Share depends on the Medical Diagnostics & Research industry context. However, Cyclically Adjusted Revenue per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Revenue per Share mean?
A high Cyclically Adjusted Revenue per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted revenue per share represents the company's inflation-adjusted revenue per share over a 10-year period. View historical data on Quest Diagnostics and its competitors. Quest Diagnostics's current Cyclically Adjusted Revenue per Share is €76.33. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Quest Diagnostics stock overvalued right now?
Based on GuruFocus' analysis, Quest Diagnostics (STU:QDI) is currently considered Modestly Overvalued. The stock's GF Value™ is €167.26, compared to a current price of €203.20 — trading 21.5% above its estimated fair value. The current Cyclically Adjusted Revenue per Share is €76.33. Quest Diagnostics' overall GF Score™ is 78/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Revenue per Share calculated?
Cyclically Adjusted Revenue per Share is calculated from a company's financial statements. For Quest Diagnostics (STU:QDI), the current Cyclically Adjusted Revenue per Share is €76.33 as of Jun. 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 Quest Diagnostics (STU:QDI) Overvalued in 2026?

Based on GuruFocus' analysis, Quest Diagnostics stock appears to be overvalued. The current stock price of €203.20 is trading 21.5% above its estimated GF Value™ of €167.26. GuruFocus considers Quest Diagnostics to be Modestly Overvalued.

Key valuation signals for STU:QDI:

  • Cyclically Adjusted Revenue per Share: €76.33
  • GF Value™: €167.26 vs. price of €203.20 (21.5% above fair value)
  • GF Score™: 78/100 with 7 warning signs

No single metric tells the full story. See the STU:QDI stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Quest Diagnostics Business Description

Address 500 Plaza Drive, Secaucus, NJ, USA, 07094
Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.
78GF Score

Get the complete analysis for STU:QDI

Cyclically Adjusted Revenue per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€203.20
Price
€167.26
GF Value