Qualys (STU:3L7A) Cyclically Adjusted PB Ratio: (As of Sep. 20, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

STU:3L7A Qualys Inc STU:3L7A
92 GF Score
Price €152.05
GF Value €139.74
Valuation Fairly Valued
! 1 Warning Sign
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What is Qualys Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Qualys  (STU:3L7A) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Qualys Cyclically Adjusted PB Ratio Related Terms


Qualys Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Qualys's Cyclically Adjusted PB 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.

Qualys Cyclically Adjusted PB Ratio Chart

Qualys Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 17.70 13.20 20.43 13.66 10.91

Qualys Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 12.13 11.38 11.24 7.05 10.46

STU:3L7A vs MBGL, DOX, WEX: Cyclically Adjusted PB Ratio Comparison

For the Software - Infrastructure subindustry, Qualys's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.


Qualys Cyclically Adjusted PB Ratio vs Software Industry

For the Software industry and Technology sector, Qualys's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Qualys's Cyclically Adjusted PB Ratio falls into.


STU:3L7A
92GF Score
Qualys Inc STU:3L7A
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Qualys Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Qualys's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Qualys's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=14.192/333.9520*333.9520
=14.192

Current CPI (Jun. 2026) = 333.9520.

Qualys Quarterly Data

Book Value per Share CPI Adj_Book
201609 6.020 241.428 8.327
201612 6.836 241.432 9.456
201703 7.184 243.801 9.840
201706 7.156 244.955 9.756
201709 7.313 246.819 9.895
201712 7.412 246.524 10.041
201803 7.646 249.554 10.232
201806 8.024 251.989 10.634
201809 8.188 252.439 10.832
201812 8.027 251.233 10.670
201903 8.498 254.202 11.164
201906 8.588 256.143 11.197
201909 8.546 256.759 11.115
201912 8.803 256.974 11.440
202003 9.032 258.115 11.686
202006 9.235 257.797 11.963
202009 8.726 260.280 11.196
202012 8.422 260.474 10.798
202103 8.619 264.877 10.867
202106 8.498 271.696 10.445
202109 8.947 274.310 10.892
202112 9.819 278.802 11.761
202203 9.863 287.504 11.456
202206 9.855 296.311 11.107
202209 9.510 296.808 10.700
202212 7.251 296.797 8.159
202303 6.675 301.836 7.385
202306 6.910 305.109 7.563
202309 8.289 307.789 8.994
202312 9.030 306.746 9.831
202403 10.126 312.332 10.827
202406 10.833 314.175 11.515
202409 10.995 315.301 11.645
202412 12.622 315.605 13.356
202503 12.667 319.799 13.228
202506 11.982 322.561 12.405
202509 12.548 324.800 12.902
202512 13.373 324.054 13.781
202603 13.980 330.213 14.138
202606 14.192 333.952 14.192

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book 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.

Is Qualys (STU:3L7A) Overvalued in 2026?

Based on GuruFocus' analysis, Qualys stock appears to be overvalued. The current stock price of €152.05 is trading 8.8% above its estimated GF Value™ of €139.74. GuruFocus considers Qualys to be Fairly Valued.

Key valuation signals for STU:3L7A:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €139.74 vs. price of €152.05 (8.8% above fair value)
  • GF Score™: 92/100 with 1 warning sign

No single metric tells the full story. See the STU:3L7A stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Qualys Business Description

Other Exchanges QLYS:USA1QLYS:Italy
Address 919 E Hillsdale Boulevard, 4th Floor, Foster City, CA, USA, 94404
Qualys is a cloud security and compliance solutions provider that helps businesses identify and manage their security risks and compliance requirements. The California-based company has more than 10,000 customers worldwide, the majority of which are small- and medium-size businesses. Qualys was founded in 1999 and went public in 2012.
92GF Score

Get the complete analysis for STU:3L7A

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

€152.05
Price
€139.74
GF Value