Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. Ascent Solar Technologies's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was -602.23%.
The historical rank and industry rank for Ascent Solar Technologies's ROC (Joel Greenblatt) % or its related term are showing as below:
ASTI'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -496.35 Med: -266.87 Max: 103.67
Current: -496.35
During the past 13 years, Ascent Solar Technologies's highest ROC (Joel Greenblatt) % was 103.67%. The lowest was -496.35%. And the median was -266.87%.
ASTI's ROC (Joel Greenblatt) % is ranked worse than 96.88% of 1025
companies
in the Semiconductors industry
Industry Median: 8.19
vs ASTI: -496.35
Ascent Solar Technologies's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was 0.00% per year.
Ascent Solar Technologies (NAS:ASTI) ROC (Joel Greenblatt) % Explanation
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
Ascent Solar Technologies ROC (Joel Greenblatt) % Related Terms
Ascent Solar Technologies ROC (Joel Greenblatt) % Historical Data
* Premium members only.
The historical data trend for Ascent Solar Technologies's ROC (Joel Greenblatt) % 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.
Ascent Solar Technologies ROC (Joel Greenblatt) % Chart
ASTI vs SPRU, PN, BEEM: ROC (Joel Greenblatt) % Comparison
For the Solar subindustry, Ascent Solar Technologies's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % 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.
Ascent Solar Technologies ROC (Joel Greenblatt) % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Ascent Solar Technologies's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Ascent Solar Technologies's ROC (Joel Greenblatt) % falls into.
Ascent Solar Technologies ROC (Joel Greenblatt) % Calculation
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is four times the quarterly (Mar. 2026) EBIT data.
* 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.
What does a ROC (Joel Greenblatt) % of -602.23% mean?
Ascent Solar Technologies (ASTI) has a ROC (Joel Greenblatt) % of -602.23% as of Mar. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Ascent Solar Technologies and its competitors. According to the industry distribution chart, Ascent Solar Technologies ranks #993 out of 1025 companies in the Semiconductors industry, placing it in the top 96.9%.
Is Ascent Solar Technologies' ROC (Joel Greenblatt) % too high?
Ascent Solar Technologies' current ROC (Joel Greenblatt) % is -602.23%. Based on the distribution chart, Ascent Solar Technologies ranks #993 out of 1025 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, Ascent Solar Technologies has a GF Score™ of 29/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ascent Solar Technologies' ROC (Joel Greenblatt) % compare to SPRU and PN?
According to the Semiconductors industry distribution chart, Ascent Solar Technologies ranks #993 out of 1025 companies for ROC (Joel Greenblatt) %. This places Ascent Solar Technologies in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 8.19. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROC (Joel Greenblatt) % for a Semiconductors company?
The median ROC (Joel Greenblatt) % among Semiconductors companies is 8.19, based on 1,025 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % 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 ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Ascent Solar Technologies and its competitors. For the Semiconductors industry, the median ROC (Joel Greenblatt) % is 8.19 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ascent Solar Technologies's current ROC (Joel Greenblatt) % is -602.23%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ascent Solar Technologies stock overvalued right now?
Based on GuruFocus' analysis, Ascent Solar Technologies (ASTI) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.25, compared to a current price of $4.45 — trading 1680% above its estimated fair value. The current ROC (Joel Greenblatt) % is -602.23%. Ascent Solar Technologies' overall GF Score™ is 29/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For Ascent Solar Technologies (ASTI), the current ROC (Joel Greenblatt) % is -602.23% 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 Ascent Solar Technologies (ASTI) Overvalued in 2026?
Based on GuruFocus' analysis, Ascent Solar Technologies stock appears to be overvalued.
The current stock price of $4.45 is trading 1680% above its estimated GF Value™ of $0.25.
GuruFocus considers Ascent Solar Technologies to be Significantly Overvalued.
Key valuation signals for ASTI:
ROC (Joel Greenblatt) %: -602.23%
GF Value™: $0.25 vs. price of $4.45 (1680% above fair value)
No single metric tells the full story. See the ASTI stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ascent Solar Technologies Inc is a solar technology company that manufactures and sells photovoltaic (PV) solar modules that are flexible, durable, and possess attractive power to weight and power to area performance. Its technology provides renewable power solutions to high-value production and specialty solar markets where traditional rigid solar panels are not suitable, including space power beaming, aerospace, satellites, near earth orbiting vehicles, fixed wing unmanned aerial vehicles (UAV), aquatic, terrestrial, and other weight-sensitive markets with transformational high quality, value added product applications. It operates in single PV segment that sells PV products and engineering services and currently, is selling it in North America.
29GF Score
Get the complete analysis for ASTI
ROC (Joel Greenblatt) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ASTI has been successfully added to your 
