iBio (IBIO) Cyclically Adjusted Book per Share: $219.04 (As of Mar. 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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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.

IBIO iBio Inc IBIO
30 GF Score
Price $1.44
GF Value $0.05
Valuation Significantly Overvalued
! 2 Warning Signs
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What is iBio Cyclically Adjusted Book per Share?

iBio IBIO -1.04% 30 Cyclically Adjusted Book per Share is $219.04 as of Mar. 2026. GuruFocus rates IBIO with a GF Score™ of 30/100 and a GF Value™ of $0.05 (Significantly Overvalued). The stock has 2 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.

iBio's adjusted book value per share for the three months ended in Mar. 2026 was $2.245. 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 $219.04 for the trailing ten years ended in Mar. 2026.

During the past 12 months, iBio's average Cyclically Adjusted Book Growth Rate was -25.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -14.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -7.10% 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 iBio was 1.10% per year. The lowest was -14.90% per year. And the median was -7.60% per year.

As of today (2026-07-16), iBio's current stock price is $1.435. iBio's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $219.04. iBio's Cyclically Adjusted PB Ratio of today is 0.01.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of iBio was 7.00. The lowest was 0.01. And the median was 0.67.


iBio  (NAS:IBIO) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=1.435/219.04
=0.01

* 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 iBio was 7.00. The lowest was 0.01. And the median was 0.67.


Be Aware

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


iBio Cyclically Adjusted Book per Share Related Terms


iBio Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for iBio'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.

iBio Cyclically Adjusted Book per Share Chart

iBio Annual Data
Trend Jun16 Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 428.05 438.37 405.87 347.07 270.33

iBio 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 293.08 270.33 249.96 231.44 219.04

IBIO vs RNTX, RANI, OSTX: Cyclically Adjusted Book per Share Comparison

For the Biotechnology subindustry, iBio'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.


iBio Cyclically Adjusted PB Ratio vs Biotechnology Industry

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

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


IBIO
30GF Score
iBio Inc IBIO
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

iBio 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, iBio'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)
=2.245/330.2130*330.2130
=2.245

Current CPI (Mar. 2026) = 330.2130.

iBio Quarterly Data

Book Value per Share CPI Adj_Book
201606 552.056 241.018 756.359
201609 396.722 241.428 542.616
201612 230.722 241.432 315.565
201703 719.222 243.801 974.141
201706 495.222 244.955 667.587
201709 331.211 246.819 443.119
201712 339.652 246.524 454.956
201803 180.609 249.554 238.984
201806 505.188 251.989 662.012
201809 352.189 252.439 460.695
201812 291.632 251.233 383.312
201903 177.103 254.202 230.060
201906 61.575 256.143 79.381
201909 -40.271 256.759 -51.792
201912 -4.688 256.974 -6.024
202003 18.447 258.115 23.600
202006 202.207 257.797 259.008
202009 221.756 260.280 281.338
202012 253.149 260.474 320.927
202103 242.697 264.877 302.562
202106 249.048 271.696 302.687
202109 230.603 274.310 277.599
202112 207.794 278.802 246.111
202203 182.064 287.504 209.110
202206 145.608 296.311 162.268
202209 107.484 296.808 119.581
202212 30.458 296.797 33.887
202303 21.984 301.836 24.051
202306 15.139 305.109 16.385
202309 9.551 307.789 10.247
202312 2.835 306.746 3.052
202403 2.919 312.332 3.086
202406 2.473 314.175 2.599
202409 2.055 315.301 2.152
202412 1.516 315.605 1.586
202503 1.131 319.799 1.168
202506 0.769 322.561 0.787
202509 2.767 324.800 2.813
202512 1.882 324.054 1.918
202603 2.245 330.213 2.245

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 $219.04 mean?
iBio (IBIO) has a Cyclically Adjusted Book per Share of $219.04 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 iBio and its competitors.
Is iBio's Cyclically Adjusted Book per Share too high?
iBio's current Cyclically Adjusted Book per Share is $219.04. Overall, iBio has a GF Score™ of 30/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does iBio's Cyclically Adjusted Book per Share compare to RNTX and RANI?
iBio's Cyclically Adjusted Book per Share of $219.04 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 iBio and its competitors. iBio's current Cyclically Adjusted Book per Share is $219.04. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is iBio stock overvalued right now?
Based on GuruFocus' analysis, iBio (IBIO) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.05, compared to a current price of $1.44 — trading 2770% above its estimated fair value. The current Cyclically Adjusted Book per Share is $219.04. iBio's overall GF Score™ is 30/100 with 2 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 iBio (IBIO), the current Cyclically Adjusted Book per Share is $219.04 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 iBio (IBIO) Overvalued in 2026?

Based on GuruFocus' analysis, iBio stock appears to be overvalued. The current stock price of $1.44 is trading 2770% above its estimated GF Value™ of $0.05. GuruFocus considers iBio to be Significantly Overvalued.

Key valuation signals for IBIO:

  • Cyclically Adjusted Book per Share: $219.04
  • GF Value™: $0.05 vs. price of $1.44 (2770% above fair value)
  • GF Score™: 30/100 with 2 warning signs

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


iBio Business Description

Other Exchanges 0JV0:Germany
Address 11750 Sorrento Valley Road, Suite 200, San Diego, CA, USA, 92121
iBio Inc is a preclinical stage biotechnology company that leverages the power of Artificial Intelligence (AI) for the development of precision antibodies. CDMO. Its technology stack is designed to minimize downstream development risks by employing AI-guided epitope-steering and monoclonal antibody (mAb) optimization.
30GF Score

Get the complete analysis for IBIO

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

$1.44
Price
$0.05
GF Value