AACTF (Aurora Solar Technologies) Cyclically Adjusted Book per Share: $0.04 (As of Dec. 2025)


What is Aurora Solar Technologies Cyclically Adjusted Book per Share?

Aurora Solar Technologies AACTF -1.52% Cyclically Adjusted Book per Share is $0.04 as of Dec. 2025. The stock has 3 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.

Aurora Solar Technologies's adjusted book value per share for the three months ended in Dec. 2025 was $0.003. 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 $0.04 for the trailing ten years ended in Dec. 2025.

During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -9.10% 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 Aurora Solar Technologies was -7.20% per year. The lowest was -12.60% per year. And the median was -9.10% per year.

As of today (2026-06-29), Aurora Solar Technologies's current stock price is $0.0065. Aurora Solar Technologies's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was $0.04. Aurora Solar Technologies's Cyclically Adjusted PB Ratio of today is 0.16.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Aurora Solar Technologies was 18.50. The lowest was 0.17. And the median was 1.88.


Aurora Solar Technologies  (OTCPK:AACTF) 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.

Aurora Solar Technologies's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=0.0065/0.04
=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 Aurora Solar Technologies was 18.50. The lowest was 0.17. And the median was 1.88.


Be Aware

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


Aurora Solar Technologies Cyclically Adjusted Book per Share Related Terms


Aurora Solar Technologies Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Aurora Solar Technologies'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.

Aurora Solar Technologies Cyclically Adjusted Book per Share Chart

Aurora Solar Technologies 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 0.03 0.03 0.02 0.02 0.03

Aurora Solar Technologies 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 0.02 0.03 0.02 0.03 0.04

AACTF vs FSLR, NXT, ENPH: Cyclically Adjusted Book per Share Comparison

For the Solar subindustry, Aurora Solar Technologies'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.


Aurora Solar Technologies Cyclically Adjusted PB Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Aurora Solar Technologies's Cyclically Adjusted PB Ratio distribution charts can be found below:

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



Aurora Solar Technologies 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, Aurora Solar Technologies'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)
=0.003/130.3661*130.3661
=0.003

Current CPI (Dec. 2025) = 130.3661.

Aurora Solar Technologies Quarterly Data

Book Value per Share CPI Adj_Book
201603 0.013 101.054 0.017
201606 0.015 102.002 0.019
201609 0.012 101.765 0.015
201612 0.011 101.449 0.014
201703 0.031 102.634 0.039
201706 0.031 103.029 0.039
201709 0.037 103.345 0.047
201712 0.030 103.345 0.038
201803 0.029 105.004 0.036
201806 0.018 105.557 0.022
201809 0.011 105.636 0.014
201812 0.016 105.399 0.020
201903 0.013 106.979 0.016
201906 0.010 107.690 0.012
201909 0.013 107.611 0.016
201912 0.012 107.769 0.015
202003 0.019 107.927 0.023
202006 0.021 108.401 0.025
202009 0.017 108.164 0.020
202012 0.018 108.559 0.022
202103 0.017 110.298 0.020
202106 0.029 111.720 0.034
202109 0.024 112.905 0.028
202112 0.019 113.774 0.022
202203 0.013 117.646 0.014
202206 0.008 120.806 0.009
202209 0.030 120.648 0.032
202212 0.028 120.964 0.030
202303 0.018 122.702 0.019
202306 0.018 124.203 0.019
202309 0.017 125.230 0.018
202312 0.020 125.072 0.021
202403 0.019 126.258 0.020
202406 0.019 127.522 0.019
202409 0.018 127.285 0.018
202412 0.013 127.364 0.013
202503 0.009 129.181 0.009
202506 0.008 129.892 0.008
202509 0.007 130.287 0.007
202512 0.003 130.366 0.003

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 $0.04 mean?
Aurora Solar Technologies (AACTF) has a Cyclically Adjusted Book per Share of $0.04 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 Aurora Solar Technologies and its competitors.
Is Aurora Solar Technologies' Cyclically Adjusted Book per Share too high?
Aurora Solar Technologies' current Cyclically Adjusted Book per Share is $0.04.
How does Aurora Solar Technologies' Cyclically Adjusted Book per Share compare to FSLR and NXT?
Aurora Solar Technologies' Cyclically Adjusted Book per Share of $0.04 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good Cyclically Adjusted Book per Share depends on the Semiconductors 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 Aurora Solar Technologies and its competitors. Aurora Solar Technologies's current Cyclically Adjusted Book per Share is $0.04. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aurora Solar Technologies stock overvalued right now?
Based on GuruFocus' analysis, Aurora Solar Technologies (AACTF) is currently considered Possible Value Trap. The stock's GF Value™ is $0.01, compared to a current price of $0.01 — trading 35% below its estimated fair value. The current Cyclically Adjusted Book per Share is $0.04. 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 Aurora Solar Technologies (AACTF), the current Cyclically Adjusted Book per Share is $0.04 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.

Aurora Solar Technologies Business Description

Other Exchanges A82:GermanyACU:Canada
Address 788 Harbourside Drive, Suite 100, North Vancouver, Vancouver, BC, CAN, V7P 3R7
Aurora Solar Technologies Inc is engaged in the delivery of inline process measurement, analysis, and control systems for solar cell manufacturers. Its products are DM Instruments, TCM Instruments, Insight, BT Imaging, and Visualize. The company's only operating segment is the development, manufacturing, and marketing, material inspection and inline quality control systems for the solar polysilicon, wafer, cell, and module manufacturing industries.