ARDX (Ardelyx) Cyclically Adjusted Book per Share: $1.82 (As of Jun. 2026)

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Director of Data and Quant Analytics at GuruFocus
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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.

ARDX Ardelyx Inc ARDX
66 GF Score
Price $4.06
GF Value $8.71
Valuation Possible Value Trap
! 5 Warning Signs
View Full Analysis

What is Ardelyx Cyclically Adjusted Book per Share?

Ardelyx ARDX +4.10% 66 Cyclically Adjusted Book per Share is $1.82 as of Jun. 2026. GuruFocus rates ARDX with a GF Score™ of 66/100 and a GF Value™ of $8.71 (Possible Value Trap). The stock has 5 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 Jun. 2026 was $0.598. 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 $1.82 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Ardelyx's average Cyclically Adjusted Book Growth Rate was -20.90% 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 (2026-08-16), Ardelyx's current stock price is $4.06. Ardelyx's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was $1.82. Ardelyx's Cyclically Adjusted PB Ratio of today is 2.23.

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 2.17.


Ardelyx  (NAS:ARDX) 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
=4.06/1.82
=2.23

* 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 2.17.


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 2.63 2.70 2.51 2.04

Ardelyx Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 2.30 2.17 2.04 1.92 1.82

ARDX vs IMTX, TRAX, AVLN: 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.


ARDX
66GF Score
Ardelyx Inc ARDX
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 Jun. 2026 was:

Adj_Book= Book Value per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.598/333.9520*333.9520
=0.598

Current CPI (Jun. 2026) = 333.9520.

Ardelyx Quarterly Data

Book Value per Share CPI Adj_Book
201609 4.713 241.428 6.519
201612 4.083 241.432 5.648
201703 3.539 243.801 4.848
201706 3.056 244.955 4.166
201709 2.666 246.819 3.607
201712 2.931 246.524 3.970
201803 2.709 249.554 3.625
201806 2.633 251.989 3.489
201809 2.278 252.439 3.014
201812 1.853 251.233 2.463
201903 1.467 254.202 1.927
201906 1.093 256.143 1.425
201909 0.782 256.759 1.017
201912 2.102 256.974 2.732
202003 1.884 258.115 2.438
202006 1.642 257.797 2.127
202009 1.455 260.280 1.867
202012 1.347 260.474 1.727
202103 1.325 264.877 1.671
202106 1.142 271.696 1.404
202109 0.763 274.310 0.929
202112 0.635 278.802 0.761
202203 0.471 287.504 0.547
202206 0.345 296.311 0.389
202209 0.357 296.808 0.402
202212 0.495 296.797 0.557
202303 0.585 301.836 0.647
202306 0.565 305.109 0.618
202309 0.823 307.789 0.893
202312 0.718 306.746 0.782
202403 0.645 312.332 0.690
202406 0.624 314.175 0.663
202409 0.668 315.301 0.708
202412 0.728 315.605 0.770
202503 0.609 319.799 0.636
202506 0.580 322.561 0.600
202509 0.635 324.800 0.653
202512 0.683 324.054 0.704
202603 0.602 330.213 0.609
202606 0.598 333.952 0.598

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 $1.82 mean?
Ardelyx (ARDX) has a Cyclically Adjusted Book per Share of $1.82 as of Jun. 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 $1.82. Overall, Ardelyx has a GF Score™ of 66/100 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 IMTX and TRAX?
Ardelyx's Cyclically Adjusted Book per Share of $1.82 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 $1.82. 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 (ARDX) is currently considered Possible Value Trap. The stock's GF Value™ is $8.71, compared to a current price of $4.06 — trading 53.4% below its estimated fair value. The current Cyclically Adjusted Book per Share is $1.82. Ardelyx's overall GF Score™ is 66/100 with 5 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 (ARDX), the current Cyclically Adjusted Book per Share is $1.82 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 Ardelyx (ARDX) Overvalued in 2026?

Based on GuruFocus' analysis, Ardelyx stock appears to be undervalued. The current stock price of $4.06 is trading 53.4% below its estimated GF Value™ of $8.71. GuruFocus considers Ardelyx to be Possible Value Trap.

Key valuation signals for ARDX:

  • Cyclically Adjusted Book per Share: $1.82
  • GF Value™: $8.71 vs. price of $4.06 (53.4% below fair value)
  • GF Score™: 66/100 with 5 warning signs

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


Ardelyx Business Description

Other Exchanges ARDX:Mexico41X:Germany
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.
66GF Score

Get the complete analysis for ARDX

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

$4.06
Price
$8.71
GF Value