Regenxbio (FRA:RB0) Cyclically Adjusted Book per Share: €9.81 (As of Jun. 2026)

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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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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.

FRA:RB0 Regenxbio Inc FRA:RB0
62 GF Score
Price €10.19
GF Value €14.69
Valuation Possible Value Trap
! 7 Warning Signs
View Full Analysis

What is Regenxbio Cyclically Adjusted Book per Share?

Regenxbio FRA:RB0 +8.91% 62 Cyclically Adjusted Book per Share is €9.81 as of Jun. 2026. GuruFocus rates FRA:RB0 with a GF Score™ of 62/100 and a GF Value™ of €14.69 (Possible Value Trap). 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 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.

Regenxbio's adjusted book value per share for the three months ended in Jun. 2026 was €1.150. 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 €9.81 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Regenxbio's average Cyclically Adjusted Book Growth Rate was -4.50% 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.

As of today (2026-08-21), Regenxbio's current stock price is €10.19. Regenxbio's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €9.81. Regenxbio's Cyclically Adjusted PB Ratio of today is 1.04.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Regenxbio was 1.68. The lowest was 0.50. And the median was 0.83.


Regenxbio  (FRA:RB0) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=10.19/9.81
=1.04

* 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 Regenxbio was 1.68. The lowest was 0.50. And the median was 0.83.


Be Aware

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


Regenxbio Cyclically Adjusted Book per Share Related Terms


Regenxbio Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Regenxbio'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.

Regenxbio Cyclically Adjusted Book per Share Chart

Regenxbio 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 0.00 0.00 10.70 9.53

Regenxbio 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 10.22 10.05 9.53 9.37 9.81

FRA:RB0 vs MDXG, ACHV, AGMB: Cyclically Adjusted Book per Share Comparison

For the Biotechnology subindustry, Regenxbio'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.


Regenxbio Cyclically Adjusted PB Ratio vs Biotechnology Industry

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

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


FRA:RB0
62GF Score
Regenxbio Inc FRA:RB0
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Regenxbio 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, Regenxbio'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)
=1.15/333.9520*333.9520
=1.150

Current CPI (Jun. 2026) = 333.9520.

Regenxbio Quarterly Data

Book Value per Share CPI Adj_Book
201609 6.065 241.428 8.389
201612 5.791 241.432 8.010
201703 6.582 243.801 9.016
201706 6.107 244.955 8.326
201709 5.250 246.819 7.103
201712 4.942 246.524 6.695
201803 7.610 249.554 10.184
201806 8.413 251.989 11.149
201809 11.859 252.439 15.688
201812 12.383 251.233 16.460
201903 11.774 254.202 15.468
201906 11.910 256.143 15.528
201909 11.545 256.759 15.016
201912 10.953 256.974 14.234
202003 10.224 258.115 13.228
202006 9.474 257.797 12.273
202009 9.435 260.280 12.106
202012 8.286 260.474 10.623
202103 10.958 264.877 13.816
202106 9.893 271.696 12.160
202109 9.174 274.310 11.169
202112 15.792 278.802 18.916
202203 14.569 287.504 16.923
202206 13.816 296.311 15.571
202209 13.154 296.808 14.800
202212 11.254 296.797 12.663
202303 9.995 301.836 11.058
202306 8.588 305.109 9.400
202309 7.734 307.789 8.391
202312 6.490 306.746 7.066
202403 7.329 312.332 7.836
202406 6.560 314.175 6.973
202409 5.483 315.301 5.807
202412 5.004 315.605 5.295
202503 5.061 319.799 5.285
202506 3.677 322.561 3.807
202509 2.717 324.800 2.794
202512 1.724 324.054 1.777
202603 0.353 330.213 0.357
202606 1.150 333.952 1.150

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 €9.81 mean?
Regenxbio (FRA:RB0) has a Cyclically Adjusted Book per Share of €9.81 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 Regenxbio and its competitors.
Is Regenxbio's Cyclically Adjusted Book per Share too high?
Regenxbio's current Cyclically Adjusted Book per Share is €9.81. Overall, Regenxbio has a GF Score™ of 62/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Regenxbio's Cyclically Adjusted Book per Share compare to MDXG and ACHV?
Regenxbio's Cyclically Adjusted Book per Share of €9.81 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 Regenxbio and its competitors. Regenxbio's current Cyclically Adjusted Book per Share is €9.81. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Regenxbio stock overvalued right now?
Based on GuruFocus' analysis, Regenxbio (FRA:RB0) is currently considered Possible Value Trap. The stock's GF Value™ is €14.69, compared to a current price of €10.19 — trading 30.6% below its estimated fair value. The current Cyclically Adjusted Book per Share is €9.81. Regenxbio's overall GF Score™ is 62/100 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 Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Regenxbio (FRA:RB0), the current Cyclically Adjusted Book per Share is €9.81 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 Regenxbio (FRA:RB0) Overvalued in 2026?

Based on GuruFocus' analysis, Regenxbio stock appears to be undervalued. The current stock price of €10.19 is trading 30.6% below its estimated GF Value™ of €14.69. GuruFocus considers Regenxbio to be Possible Value Trap.

Key valuation signals for FRA:RB0:

  • Cyclically Adjusted Book per Share: €9.81
  • GF Value™: €14.69 vs. price of €10.19 (30.6% below fair value)
  • GF Score™: 62/100 with 7 warning signs

No single metric tells the full story. See the FRA:RB0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Regenxbio Business Description

Other Exchanges RGNX:USARB0:Germany
Address 9804 Medical Center Drive, Rockville, MD, USA, 20850
Regenxbio Inc is a clinical-stage biotechnology company focused on the development of gene therapy treatments. Its product candidates are designed to deliver genes to cells to address genetic defects or enable the production of therapeutic proteins. The company is developing a pipeline of investigational gene therapy treatments using its NAV Technology Platform based on adeno-associated virus (AAV) vectors. Its internal research and development programs are focused on therapies for retinal, neuromuscular, and neurodegenerative diseases.
62GF Score

Get the complete analysis for FRA:RB0

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

€10.19
Price
€14.69
GF Value