Ardelyx (STU:41X) Cyclically Adjusted Book per Share: €1.65 (As of Mar. 2026)


STU:41X Ardelyx Inc STU:41X
73 GF Score
Price €4.62
GF Value €8.90
Valuation Possible Value Trap
! 6 Warning Signs
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What is Ardelyx Cyclically Adjusted Book per Share?

Ardelyx STU:41X -1.07% 73 Cyclically Adjusted Book per Share is €1.65 as of Mar. 2026. GuruFocus rates STU:41X with a GF Score™ of 73/100 and a GF Value™ of €8.90 (Possible Value Trap). The stock has 6 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 Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Ardelyx's adjusted book value per share for the three months ended in Mar. 2026 was €0.521. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is €1.65 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Ardelyx's average Cyclically Adjusted Book Growth Rate was -21.60% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -8.10% 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 Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Ardelyx was -8.10% per year. The lowest was -8.10% per year. And the median was -8.10% per year.

As of today (2026-07-12), Ardelyx's current stock price is €4.62. Ardelyx's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €1.65. Ardelyx's Cyclically Adjusted PB Ratio of today is 2.80.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ardelyx was 3.81. The lowest was 0.47. And the median was 2.14.


Ardelyx  (STU:41X) Cyclically Adjusted Book per Share Explanation

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

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB 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 PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Ardelyx's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=4.62/1.65
=2.80

* 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 PB Ratio of Ardelyx was 3.81. The lowest was 0.47. And the median was 2.14.


Be Aware

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


Ardelyx Cyclically Adjusted Book per Share Related Terms


Ardelyx Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Ardelyx's Cyclically Adjusted Book 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.

Ardelyx Cyclically Adjusted Book per Share Chart

Ardelyx Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 2.16 2.49 2.46 1.70

Ardelyx Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book 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 2.27 1.97 1.87 1.70 1.65

STU:41X vs AVLN, INBX, JBIO: Cyclically Adjusted Book per Share Comparison

For the Biotechnology subindustry, Ardelyx'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.


Ardelyx Cyclically Adjusted PB Ratio vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Ardelyx's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:41X
73GF Score
Ardelyx Inc STU:41X
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ardelyx Cyclically Adjusted Book 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 Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

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

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value 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 Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

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

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

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.521/330.2130*330.2130
=0.521

Current CPI (Mar. 2026) = 330.2130.

Ardelyx Quarterly Data

Book Value per Share CPI Adj_Book
201606 3.611 241.018 4.947
201609 4.199 241.428 5.743
201612 3.870 241.432 5.293
201703 3.309 243.801 4.482
201706 2.720 244.955 3.667
201709 2.237 246.819 2.993
201712 2.476 246.524 3.317
201803 2.197 249.554 2.907
201806 2.254 251.989 2.954
201809 1.952 252.439 2.553
201812 1.628 251.233 2.140
201903 1.298 254.202 1.686
201906 0.967 256.143 1.247
201909 0.710 256.759 0.913
201912 1.891 256.974 2.430
202003 1.705 258.115 2.181
202006 1.458 257.797 1.868
202009 1.236 260.280 1.568
202012 1.108 260.474 1.405
202103 1.113 264.877 1.388
202106 0.948 271.696 1.152
202109 0.648 274.310 0.780
202112 0.562 278.802 0.666
202203 0.428 287.504 0.492
202206 0.326 296.311 0.363
202209 0.360 296.808 0.401
202212 0.467 296.797 0.520
202303 0.546 301.836 0.597
202306 0.522 305.109 0.565
202309 0.772 307.789 0.828
202312 0.658 306.746 0.708
202403 0.593 312.332 0.627
202406 0.580 314.175 0.610
202409 0.602 315.301 0.630
202412 0.695 315.605 0.727
202503 0.563 319.799 0.581
202506 0.502 322.561 0.514
202509 0.541 324.800 0.550
202512 0.583 324.054 0.594
202603 0.521 330.213 0.521

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

What does a Cyclically Adjusted Book per Share of €1.65 mean?
Ardelyx (STU:41X) has a Cyclically Adjusted Book per Share of €1.65 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Ardelyx and its competitors.
Is Ardelyx's Cyclically Adjusted Book per Share too high?
Ardelyx's current Cyclically Adjusted Book per Share is €1.65. Overall, Ardelyx has a GF Score™ of 73/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Ardelyx's Cyclically Adjusted Book per Share compare to AVLN and INBX?
Ardelyx's Cyclically Adjusted Book per Share of €1.65 can be compared against companies in the Biotechnology 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 Book per Share for a Biotechnology company?
A good Cyclically Adjusted Book per Share depends on the Biotechnology industry context. However, Cyclically Adjusted Book 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 Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Ardelyx and its competitors. Ardelyx's current Cyclically Adjusted Book per Share is €1.65. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ardelyx stock overvalued right now?
Based on GuruFocus' analysis, Ardelyx (STU:41X) is currently considered Possible Value Trap. The stock's GF Value™ is €8.90, compared to a current price of €4.62 — trading 48.1% below its estimated fair value. The current Cyclically Adjusted Book per Share is €1.65. Ardelyx's overall GF Score™ is 73/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Ardelyx (STU:41X), the current Cyclically Adjusted Book per Share is €1.65 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 Ardelyx (STU:41X) Overvalued in 2026?

Based on GuruFocus' analysis, Ardelyx stock appears to be undervalued. The current stock price of €4.62 is trading 48.1% below its estimated GF Value™ of €8.90. GuruFocus considers Ardelyx to be Possible Value Trap.

Key valuation signals for STU:41X:

  • Cyclically Adjusted Book per Share: €1.65
  • GF Value™: €8.90 vs. price of €4.62 (48.1% below fair value)
  • GF Score™: 73/100 with 6 warning signs

No single metric tells the full story. See the STU:41X stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ardelyx Business Description

Other Exchanges ARDX:USAARDX:Mexico
Address 400 Fifth Avenue, Suite 210, Waltham, MA, USA, 02451
Ardelyx Inc is a biopharmaceutical company developing and commercialize, first-in-class medicines that meet unmet medical needs. It has developed a platform that enabled the discovery of new biological mechanisms and pathways to develop potent and efficacious therapies that minimize the side effects and drug-drug interactions frequently encountered with traditional, systemically absorbed medicines. Its products Tenapanor, branded as IBSRELA, is used for the treatment of adults with IBS-C. Tenapanor, branded as XPHOZAH, is used to reduce serum phosphorus in adults with CKD on dialysis as add-on therapy in patients who have an inadequate response to phosphate binders or who are intolerant of any dose of phosphate binder therapy.
73GF Score

Get the complete analysis for STU:41X

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

€4.62
Price
€8.90
GF Value