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Acon Optics CommunicationsROCO:6820 +3.82%64 ROC (Joel Greenblatt) % is 3.16% as of Dec. 2025, which is 77% below its 10-year median of 13.56. GuruFocus rates ROCO:6820 with a GF Score™ of 64/100 and a GF Value™ of NT$56.76 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 2,492 Hardware companies, Acon Optics Communications ranks worse than 53.93% on this metric.
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. Acon Optics Communications's annualized ROC (Joel Greenblatt) % for the quarter that ended in Dec. 2025 was 3.16%.
The historical rank and industry rank for Acon Optics Communications's ROC (Joel Greenblatt) % or its related term are showing as below:
ROCO:6820'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 5.47 Med: 13.56 Max: 41.03
Current: 8.21
During the past 9 years, Acon Optics Communications's highest ROC (Joel Greenblatt) % was 41.03%. The lowest was 5.47%. And the median was 13.56%.
ROCO:6820's ROC (Joel Greenblatt) % is ranked worse than 53.93% of 2492
companies
in the Hardware industry
Industry Median: 10.35
vs ROCO:6820: 8.21
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.
* 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.
ROCO:6820 vs CSCO, MSI, HPE: ROC (Joel Greenblatt) % Comparison
For the Communication Equipment subindustry, Acon Optics Communications'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.
Acon Optics Communications ROC (Joel Greenblatt) % vs Hardware Industry
For the Hardware industry and Technology sector, Acon Optics Communications's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Acon Optics Communications's ROC (Joel Greenblatt) % falls into.
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 two times the semi-annual (Dec. 2025) 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 3.16% mean?
Acon Optics Communications (ROCO:6820) has a ROC (Joel Greenblatt) % of 3.16% as of Dec. 2025. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Acon Optics Communications and its competitors. This is 77% below median its historical median of 13.56. Over the past decade, Acon Optics Communications' ROC (Joel Greenblatt) % has ranged from 5.47 to 41.03. According to the industry distribution chart, Acon Optics Communications ranks #1344 out of 2492 companies in the Hardware industry, placing it in the top 53.9%.
Is Acon Optics Communications' ROC (Joel Greenblatt) % too high?
Acon Optics Communications' current ROC (Joel Greenblatt) % of 3.16% is 77% below median its 10-year median of 13.56. Over the past 10 years, this metric has ranged from a low of 5.47 to a high of 41.03. The Hardware industry median ROC (Joel Greenblatt) % is 10.35. Acon Optics Communications' value of 3.16% is 69.5% below this industry median. Based on the distribution chart, Acon Optics Communications ranks #1344 out of 2492 companies in the Hardware industry, which is below the industry midpoint. Overall, Acon Optics Communications has a GF Score™ of 64/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Acon Optics Communications' ROC (Joel Greenblatt) % compare to CSCO and MSI?
According to the Hardware industry distribution chart, Acon Optics Communications ranks #1344 out of 2492 companies for ROC (Joel Greenblatt) %. This places Acon Optics Communications in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 10.35. Acon Optics Communications' value of 3.16% is 69.5% below this benchmark. Historically, Acon Optics Communications' own ROC (Joel Greenblatt) % has ranged from 5.47 to 41.03 over the past decade. While the company's 10-year median is 13.56 vs. the industry median of 10.35, Acon Optics Communications has consistently been below the industry average. 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 Hardware company?
The median ROC (Joel Greenblatt) % among Hardware companies is 10.35, based on 2,492 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. Acon Optics Communications's current ROC (Joel Greenblatt) % of 3.16% is 69.5% below the industry median. 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 Acon Optics Communications and its competitors. For the Hardware industry, the median ROC (Joel Greenblatt) % is 10.35 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Acon Optics Communications's current ROC (Joel Greenblatt) % is 3.16%, which is 77% below median its own 10-year median of 13.56. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Acon Optics Communications stock overvalued right now?
Based on GuruFocus' analysis, Acon Optics Communications (ROCO:6820) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$56.76, compared to a current price of NT$285.50 — trading 403% above its estimated fair value. The current ROC (Joel Greenblatt) % is 3.16%, which is 77% below median its 10-year median of 13.56 and 69.5% below the Hardware industry median of 10.35. Acon Optics Communications' overall GF Score™ is 64/100 with 3 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 Acon Optics Communications (ROCO:6820), the current ROC (Joel Greenblatt) % is 3.16% 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 Acon Optics Communications (ROCO:6820) Overvalued in 2026?
Based on GuruFocus' analysis, Acon Optics Communications stock appears to be overvalued.
The current stock price of NT$285.50 is trading 403% above its estimated GF Value™ of NT$56.76.
GuruFocus considers Acon Optics Communications to be Significantly Overvalued.
Key valuation signals for ROCO:6820:
ROC (Joel Greenblatt) %: 3.16% (77% below median its 10-year median of 13.56)
GF Value™: NT$56.76 vs. price of NT$285.50 (403% above fair value)
Industry Position: 69.5% below the Hardware median (#1344 of 2492)
No single metric tells the full story. See the ROCO:6820 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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