ISCO (International Stem Cell) Cyclically Adjusted Book per Share: $-0.28 (As of Mar. 2026)


ISCO International Stem Cell Corp ISCO
24 GF Score
Price $0.18
GF Value $0.13
Valuation Significantly Overvalued
! 6 Warning Signs
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What is International Stem Cell Cyclically Adjusted Book per Share?

International Stem Cell ISCO -10.50% 24 Cyclically Adjusted Book per Share is $-0.28 as of Mar. 2026. GuruFocus rates ISCO with a GF Score™ of 24/100 and a GF Value™ of $0.13 (Significantly Overvalued). 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.

International Stem Cell's adjusted book value per share for the three months ended in Mar. 2026 was $-0.527. 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 $-0.28 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 14.80% 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 International Stem Cell was 14.80% per year. The lowest was -24.50% per year. And the median was -12.60% per year.

As of today (2026-07-06), International Stem Cell's current stock price is $0.179. International Stem Cell's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $-0.28. International Stem Cell's Cyclically Adjusted PB Ratio of today is .

During the past 13 years, the highest Cyclically Adjusted PB Ratio of International Stem Cell was 5.29. The lowest was 0.20. And the median was 0.74.


International Stem Cell  (OTCPK:ISCO) 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of International Stem Cell was 5.29. The lowest was 0.20. And the median was 0.74.


Be Aware

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


International Stem Cell Cyclically Adjusted Book per Share Related Terms


International Stem Cell Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for International Stem Cell'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.

International Stem Cell Cyclically Adjusted Book per Share Chart

International Stem Cell 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 -0.39 -0.68 -0.41 -0.31 -0.42

International Stem Cell 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 -0.33 -0.36 -0.39 -0.42 -0.28

ISCO vs ZVSA, AXIM, HEPA: Cyclically Adjusted Book per Share Comparison

For the Biotechnology subindustry, International Stem Cell'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.


International Stem Cell Cyclically Adjusted PB Ratio vs Biotechnology Industry

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

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


ISCO
24GF Score
International Stem Cell Corp ISCO
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
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International Stem Cell 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, International Stem Cell'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)
=-0.527/330.2130*330.2130
=-0.527

Current CPI (Mar. 2026) = 330.2130.

International Stem Cell Quarterly Data

Book Value per Share CPI Adj_Book
201606 -0.309 241.018 -0.423
201609 0.116 241.428 0.159
201612 0.870 241.432 1.190
201703 0.159 243.801 0.215
201706 0.396 244.955 0.534
201709 -0.046 246.819 -0.062
201712 0.340 246.524 0.455
201803 0.264 249.554 0.349
201806 0.260 251.989 0.341
201809 0.421 252.439 0.551
201812 0.365 251.233 0.480
201903 0.422 254.202 0.548
201906 -0.159 256.143 -0.205
201909 -0.090 256.759 -0.116
201912 -0.384 256.974 -0.493
202003 -0.378 258.115 -0.484
202006 -0.479 257.797 -0.614
202009 -0.515 260.280 -0.653
202012 -0.575 260.474 -0.729
202103 -0.624 264.877 -0.778
202106 -0.539 271.696 -0.655
202109 -0.545 274.310 -0.656
202112 -0.574 278.802 -0.680
202203 -0.564 287.504 -0.648
202206 -0.553 296.311 -0.616
202209 -0.582 296.808 -0.648
202212 -0.565 296.797 -0.629
202303 -0.556 301.836 -0.608
202306 -0.481 305.109 -0.521
202309 -0.483 307.789 -0.518
202312 -0.524 306.746 -0.564
202403 -0.533 312.332 -0.564
202406 -0.502 314.175 -0.528
202409 -0.505 315.301 -0.529
202412 -0.492 315.605 -0.515
202503 -0.511 319.799 -0.528
202506 -0.487 322.561 -0.499
202509 -0.472 324.800 -0.480
202512 -0.508 324.054 -0.518
202603 -0.527 330.213 -0.527

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 $-0.28 mean?
International Stem Cell (ISCO) has a Cyclically Adjusted Book per Share of $-0.28 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 International Stem Cell and its competitors.
Is International Stem Cell's Cyclically Adjusted Book per Share too high?
International Stem Cell's current Cyclically Adjusted Book per Share is $-0.28. Overall, International Stem Cell has a GF Score™ of 24/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does International Stem Cell's Cyclically Adjusted Book per Share compare to ZVSA and AXIM?
International Stem Cell's Cyclically Adjusted Book per Share of $-0.28 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 International Stem Cell and its competitors. International Stem Cell's current Cyclically Adjusted Book per Share is $-0.28. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is International Stem Cell stock overvalued right now?
Based on GuruFocus' analysis, International Stem Cell (ISCO) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.13, compared to a current price of $0.18 — trading 37.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is $-0.28. International Stem Cell's overall GF Score™ is 24/100 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 International Stem Cell (ISCO), the current Cyclically Adjusted Book per Share is $-0.28 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 International Stem Cell (ISCO) Overvalued in 2026?

Based on GuruFocus' analysis, International Stem Cell stock appears to be overvalued. The current stock price of $0.18 is trading 37.7% above its estimated GF Value™ of $0.13. GuruFocus considers International Stem Cell to be Significantly Overvalued.

Key valuation signals for ISCO:

  • Cyclically Adjusted Book per Share: $-0.28
  • GF Value™: $0.13 vs. price of $0.18 (37.7% above fair value)
  • GF Score™: 24/100 with 6 warning signs

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


International Stem Cell Business Description

Address 9745 Businesspark Avenue, San Diego, CA, USA, 92131
International Stem Cell Corp is a clinical-stage biotechnology company. It is focused on therapeutic and biomedical product development with multiple long-term therapeutic opportunities. The company develops different cell types from its stem cells that may result in therapeutic products. The clinical applications of the company include neural stem cells for the treatment of Parkinson's disease and other central nervous system disorders; Liver cells, which are used to treat a variety of congenital and acquired liver diseases; and retinal cells and three-dimensional eye structures. The company operates in three segments, the therapeutic market, the biomedical market, and the anti-aging market. The Biomedical products business segment accounts for the majority of revenue.
24GF Score

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

$0.18
Price
$0.13
GF Value