Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
As of today (2026-07-14), Ecocera Optronics Co's weighted average cost of capital is 5.21%%. Ecocera Optronics Co's ROIC % is 12.34% (calculated using TTM income statement data).
Ecocera Optronics Co generates higher returns on investment than it costs the company to raise the capital needed for that investment. It is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases.
For a comprehensive WACC calculation, please access the WACC Calculator.
Ecocera Optronics Co (ROCO:6597) WACC % Explanation
Because it costs money to raise capital. A firm that generates higher ROIC % than it costs the company to raise the capital needed for that investment is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases, whereas a firm that earns returns that do not match up to its cost of capital will destroy value as it grows.
As of today, Ecocera Optronics Co's weighted average cost of capital is 5.21%%. Ecocera Optronics Co's ROIC % is 12.34% (calculated using TTM income statement data).
Ecocera Optronics Co generates higher returns on investment than it costs the company to raise the capital needed for that investment. It is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases.
Be Aware
1. GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding latest one-year quarterly average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together.
For companies that report quarterly, GuruFocus combines all of the most recent year's quarterly debt data from the beginning of the year to the year-end and calculates the average.
For companies that report semi-annually, GuruFocus combines all of the most recent year's semi-annual debt data from the start of the year to the year-end and calculates the average.
For companies that report annually, GuruFocus combines the beginning and ending annual debt data from the most recent year and then calculates the average.
2. The WACC formula discussed above does not include Preferred Stock. Please adjust if preferred stock is considered.
3. (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
4. GuruFocus uses the latest TTM Interest Expense divided by the latest one-year quarterly average debt to get the simplified cost of debt.
* 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.
For the Electronic Components subindustry, Ecocera Optronics Co's WACC %, along with its competitors' market caps and WACC % 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.
Ecocera Optronics Co WACC % vs Hardware Industry
For the Hardware industry and Technology sector, Ecocera Optronics Co's WACC % distribution charts can be found below:
* The bar in red indicates where Ecocera Optronics Co's WACC % falls into.
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Generally speaking, a company's assets are financed by debt and equity. WACC is the average of the costs of these sources of financing, each of which is weighted by its respective use in the given situation. By taking a weighted average, we can see how much interest the company has to pay for every dollar it finances.
WACC
=
E
/
(E + D)
*
Cost of Equity
+
D
/
(E + D)
*
Cost of Debt
*
(1 - Tax Rate)
1. Weights:
Generally speaking, a company's assets are financed by debt and equity. We need to calculate the weight of equity and the weight of debt.
The market value of equity (E) is also called "Market Cap". As of today, Ecocera Optronics Co's market capitalization (E) is NT$1962.391 Mil.
The market value of debt is typically difficult to calculate, therefore, GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding the latest one-year quarterly average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together. As of Dec. 2025, Ecocera Optronics Co's latest one-year quarterly average Book Value of Debt (D) is NT$217.9492 Mil.
a) weight of equity = E / (E + D) = 1962.391 / (1962.391 + 217.9492) = 0.9
b) weight of debt = D / (E + D) = 217.9492 / (1962.391 + 217.9492) = 0.1
2. Cost of Equity:
GuruFocus uses Capital Asset Pricing Model (CAPM) to calculate the required rate of return. The formula is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)
a) GuruFocus uses 10-Year Treasury Constant Maturity Rate as the risk-free rate. It is updated daily. The current risk-free rate is 4.622%. Please go to Economic Indicators page for more information. Please note that we use the 10-Year Treasury Constant Maturity Rate of the country/region where the company is headquartered. If the data for that country/region is not available, then we will use the 10-Year Treasury Constant Maturity Rate of the United States as default.
b) Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. Ecocera Optronics Co's beta is 0.1665.
c) (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
Cost of Equity = 4.622% + 0.1665 * 6% = 5.621%
3. Cost of Debt:
GuruFocus uses latest TTM Interest Expense divided by the latest one-year quarterly average debt to get the simplified cost of debt.
As of Dec. 2025, Ecocera Optronics Co's interest expense (positive number) was NT$4.115 Mil. Its total Book Value of Debt (D) is NT$217.9492 Mil.
Cost of Debt = 4.115 / 217.9492 = 1.8881%.
4. Multiply by one minus TTM Tax Rate:
GuruFocus uses the most recent TTM Tax Expense divided by the most recent TTM Pre-Tax Income to calculate the tax rate. The calculated TTM tax rate is limited to between 0% and 100%. If the calculated tax rate is higher than 100%, it is set to 100%. If the calculated tax rate is less than 0%, it is set to 0%.
The latest calculated TTM Tax Rate = 18.447 / 89.78 = 20.55%.
Ecocera Optronics Co's Weighted Average Cost Of Capital (WACC) for Today is calculated as:
WACC
=
E / (E + D)
*
Cost of Equity
+
D / (E + D)
*
Cost of Debt
*
(1 - Tax Rate)
=
0.9
*
5.621%
+
0.1
*
1.8881%
*
(1 - 20.55%)
=
5.21%
* 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.
Ecocera Optronics Co (ROCO:6597) has a WACC % of 5.21% as of Jul. 14, 2026. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Ecocera Optronics Co and its competitors. This is 21% below median its historical median of 6.62. Over the past decade, Ecocera Optronics Co's WACC % has ranged from 4.55 to 11.67. According to the industry distribution chart, Ecocera Optronics Co ranks #770 out of 2519 companies in the Hardware industry, placing it in the top 30.6%.
Is Ecocera Optronics Co's WACC % too high?
Ecocera Optronics Co's current WACC % of 5.21% is 21% below median its 10-year median of 6.62. Over the past 10 years, this metric has ranged from a low of 4.55 to a high of 11.67. The Hardware industry median WACC % is 8.25. Ecocera Optronics Co's value of 5.21% is 36.8% below this industry median. Based on the distribution chart, Ecocera Optronics Co ranks #770 out of 2519 companies in the Hardware industry, which is above the industry midpoint. Overall, Ecocera Optronics Co has a GF Score™ of 87/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Ecocera Optronics Co's WACC % compare to APH and GLW?
According to the Hardware industry distribution chart, Ecocera Optronics Co ranks #770 out of 2519 companies for WACC %. This puts Ecocera Optronics Co in the upper half of its industry. The industry median WACC % is 8.25. Ecocera Optronics Co's value of 5.21% is 36.8% below this benchmark. Historically, Ecocera Optronics Co's own WACC % has ranged from 4.55 to 11.67 over the past decade. While the company's 10-year median is 6.62 vs. the industry median of 8.25, Ecocera Optronics Co 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 WACC % for a Hardware company?
The median WACC % among Hardware companies is 8.25, based on 2,519 companies in the industry. Companies in the top quartile (top 25%) have a WACC % significantly above this median, while those in the bottom quartile fall well below. However, WACC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Ecocera Optronics Co's current WACC % of 5.21% is 36.8% 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 WACC % mean?
A high WACC % can signal that a stock is expensive relative to its fundamentals. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on Ecocera Optronics Co and its competitors. For the Hardware industry, the median WACC % is 8.25 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ecocera Optronics Co's current WACC % is 5.21%, which is 21% below median its own 10-year median of 6.62. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ecocera Optronics Co stock overvalued right now?
Based on GuruFocus' analysis, Ecocera Optronics Co (ROCO:6597) is currently considered Fairly Valued. The stock's GF Value™ is NT$69.69, compared to a current price of NT$67.20 — trading 3.6% below its estimated fair value. The current WACC % is 5.21%, which is 21% below median its 10-year median of 6.62 and 36.8% below the Hardware industry median of 8.25. Ecocera Optronics Co's overall GF Score™ is 87/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is WACC % calculated?
WACC % is calculated from a company's financial statements. For Ecocera Optronics Co (ROCO:6597), the current WACC % is 5.21% as of Jul. 14, 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 Ecocera Optronics Co (ROCO:6597) Overvalued in 2026?
Based on GuruFocus' analysis, Ecocera Optronics Co stock appears to be undervalued.
The current stock price of NT$67.20 is trading 3.6% below its estimated GF Value™ of NT$69.69.
GuruFocus considers Ecocera Optronics Co to be Fairly Valued.
Key valuation signals for ROCO:6597:
WACC %: 5.21% (21% below median its 10-year median of 6.62)
GF Value™: NT$69.69 vs. price of NT$67.20 (3.6% below fair value)
Industry Position: 36.8% below the Hardware median (#770 of 2519)
No single metric tells the full story. See the ROCO:6597 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ecocera Optronics Co Ltd is a Taiwan-based company engaged in the production of ceramic substrates and ceramic circuit boards. The company's products are used in LED lighting, automotive lighting, mobile phone LED flash, UV, display, and other applications.
87GF Score
Get the complete analysis for ROCO:6597
WACC % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:6597 has been successfully added to your 
