CYAN (Cyanotech) Cyclically Adjusted Book per Share: $3.05 (As of Dec. 2025)


CYAN Cyanotech Corp CYAN
34 GF Score
Price $0.49
GF Value $0.40
Valuation Modestly Overvalued
! 9 Warning Signs
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What is Cyanotech Cyclically Adjusted Book per Share?

Cyanotech CYAN 34 Cyclically Adjusted Book per Share is $3.05 as of Dec. 2025. GuruFocus rates CYAN with a GF Score™ of 34/100 and a GF Value™ of $0.40 (Modestly Overvalued). The stock has 9 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.

Cyanotech's adjusted book value per share for the three months ended in Dec. 2025 was $1.061. 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 $3.05 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Cyanotech's average Cyclically Adjusted Book Growth Rate was -9.50% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -3.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 0.60% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 3.40% 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 Cyanotech was 10.50% per year. The lowest was -14.70% per year. And the median was 2.00% per year.

As of today (2026-07-05), Cyanotech's current stock price is $0.48658. Cyanotech's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was $3.05. Cyanotech's Cyclically Adjusted PB Ratio of today is 0.16.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Cyanotech was 1.92. The lowest was 0.06. And the median was 0.76.


Cyanotech  (OTCPK:CYAN) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=0.48658/3.05
=0.16

* 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 Cyanotech was 1.92. The lowest was 0.06. And the median was 0.76.


Be Aware

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


Cyanotech Cyclically Adjusted Book per Share Related Terms


Cyanotech Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Cyanotech'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.

Cyanotech Cyclically Adjusted Book per Share Chart

Cyanotech Annual Data
Trend Mar16 Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.43 3.72 3.77 3.61 3.32

Cyanotech Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
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 3.37 3.32 3.24 3.16 3.05

CYAN vs PAVS, TOFB, ATPC: Cyclically Adjusted Book per Share Comparison

For the Packaged Foods subindustry, Cyanotech'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.


Cyanotech Cyclically Adjusted PB Ratio vs Consumer Packaged Goods Industry

For the Consumer Packaged Goods industry and Consumer Defensive sector, Cyanotech's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


CYAN
34GF Score
Cyanotech Corp CYAN
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
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Cyanotech 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, Cyanotech's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=1.061/324.0540*324.0540
=1.061

Current CPI (Dec. 2025) = 324.0540.

Cyanotech Quarterly Data

Book Value per Share CPI Adj_Book
201603 3.184 238.132 4.333
201606 3.022 241.018 4.063
201609 3.053 241.428 4.098
201612 2.992 241.432 4.016
201703 2.921 243.801 3.883
201706 3.015 244.955 3.989
201709 3.121 246.819 4.098
201712 3.317 246.524 4.360
201803 3.137 249.554 4.073
201806 2.911 251.989 3.744
201809 2.729 252.439 3.503
201812 2.785 251.233 3.592
201903 2.536 254.202 3.233
201906 2.564 256.143 3.244
201909 2.595 256.759 3.275
201912 2.623 256.974 3.308
202003 2.636 258.115 3.309
202006 2.652 257.797 3.334
202009 2.675 260.280 3.330
202012 2.814 260.474 3.501
202103 2.786 264.877 3.408
202106 2.873 271.696 3.427
202109 3.032 274.310 3.582
202112 3.099 278.802 3.602
202203 3.142 287.504 3.541
202206 3.068 296.311 3.355
202209 2.915 296.808 3.183
202212 2.827 296.797 3.087
202303 2.606 301.836 2.798
202306 2.391 305.109 2.539
202309 2.225 307.789 2.343
202312 2.009 306.746 2.122
202403 1.701 312.332 1.765
202406 1.534 314.175 1.582
202409 1.357 315.301 1.395
202412 1.328 315.605 1.364
202503 1.234 319.799 1.250
202506 1.106 322.561 1.111
202509 1.091 324.800 1.088
202512 1.061 324.054 1.061

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 $3.05 mean?
Cyanotech (CYAN) has a Cyclically Adjusted Book per Share of $3.05 as of Dec. 2025. 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 Cyanotech and its competitors.
Is Cyanotech's Cyclically Adjusted Book per Share too high?
Cyanotech's current Cyclically Adjusted Book per Share is $3.05. Overall, Cyanotech has a GF Score™ of 34/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Cyanotech's Cyclically Adjusted Book per Share compare to PAVS and TOFB?
Cyanotech's Cyclically Adjusted Book per Share of $3.05 can be compared against companies in the Consumer Packaged Goods 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 Consumer Packaged Goods company?
A good Cyclically Adjusted Book per Share depends on the Consumer Packaged Goods 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 Cyanotech and its competitors. Cyanotech's current Cyclically Adjusted Book per Share is $3.05. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Cyanotech stock overvalued right now?
Based on GuruFocus' analysis, Cyanotech (CYAN) is currently considered Modestly Overvalued. The stock's GF Value™ is $0.40, compared to a current price of $0.49 — trading 21.6% above its estimated fair value. The current Cyclically Adjusted Book per Share is $3.05. Cyanotech's overall GF Score™ is 34/100 with 9 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 Cyanotech (CYAN), the current Cyclically Adjusted Book per Share is $3.05 as of Dec. 2025. 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 Cyanotech (CYAN) Overvalued in 2026?

Based on GuruFocus' analysis, Cyanotech stock appears to be overvalued. The current stock price of $0.49 is trading 21.6% above its estimated GF Value™ of $0.40. GuruFocus considers Cyanotech to be Modestly Overvalued.

Key valuation signals for CYAN:

  • Cyclically Adjusted Book per Share: $3.05
  • GF Value™: $0.40 vs. price of $0.49 (21.6% above fair value)
  • GF Score™: 34/100 with 9 warning signs

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


Cyanotech Business Description

Address 73-4460 Queen Kaahumanu Highway, Suite 102, Kailua-Kona, HI, USA, 96740
Cyanotech Corp is engaged in the production of natural products derived from microalgae for the nutritional supplements market. The company's products include BioAstin Hawaiian Astaxanthin and Hawaiian Spirulina Pacifica is a dietary supplement used for extra energy, a strengthened immune system, cardiovascular benefits, and as a source of antioxidant carotenoids. BioAstin Hawaiian Astaxanthin is a dietary antioxidant shown to support and maintain the body's natural inflammatory response, enhance skin, and support eye and joint health. It derives maximum revenue from the Packaged product and geographically from the United States.
34GF Score

Get the complete analysis for CYAN

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

$0.49
Price
$0.40
GF Value