ROC % measures how well a company generates cash flow relative to the capital it has invested in its business. It is also called ROIC %. Silicon Optronics's annualized return on capital (ROC %) for the quarter that ended in Dec. 2025 was 21.29%.
As of today (2026-06-24), Silicon Optronics's WACC % is 6.35%. Silicon Optronics's ROC % is 8.80% (calculated using TTM income statement data).
Silicon Optronics 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.
Silicon Optronics (TPE:3530) ROC % Explanation
ROC % measures how well a company generates cash flow relative to the capital it has invested in its business. It is also called ROIC %. The reason book values of debt and equity are used is because the book values are the capital the company received when issuing the debt or receiving the equity investments.
There are four key components to this definition. The first is the use of operating income or EBIT rather than net income in the numerator. The second is the tax adjustment to this operating income or EBIT, computed as a hypothetical tax based on an effective or marginal tax rate. The third is the use of book values for invested capital, rather than market values. The final is the timing difference; the capital invested is from the end of the prior year whereas the operating income or EBIT is the current year's number.
Why is ROC % important?
Because it costs money to raise capital. A firm that generates higher returns on investment 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, Silicon Optronics's WACC % is 6.35%. Silicon Optronics's ROC % is 8.80% (calculated using TTM income statement data).
Silicon Optronics 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
Like ROE % and ROA %, ROC % is calculated with only 12 months of data. Fluctuations in the company's earnings or business cycles can affect the ratio drastically. It is important to look at the ratio from a long term perspective.
Silicon Optronics ROC % Related Terms
Silicon Optronics ROC % Historical Data
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The historical data trend for Silicon Optronics's ROC % 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.
Note:
The Operating Income data used here is four times the quarterly (Dec. 2025) data.
The tax rate is limited to between 0% and 100%.
* 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.
Silicon Optronics (TPE:3530) has a ROC % of 21.29% as of Dec. 2025. Return on capital is the ratio of current-period net income to average two-period capital. View historical data on Silicon Optronics and its competitors.
Is Silicon Optronics' ROC % too high?
Silicon Optronics' current ROC % is 21.29%. The Semiconductors industry median ROC % is 3.71. Silicon Optronics' value of 21.29% is 473.9% above this industry median. Overall, Silicon Optronics has a GF Score™ of 72/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Silicon Optronics' ROC % compare to NVDA and AVGO?
Silicon Optronics' ROC % of 21.29% can be compared against companies in the Semiconductors industry. The industry median ROC % is 3.71. Silicon Optronics' value of 21.29% is 473.9% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROC % for a Semiconductors company?
The median ROC % among Semiconductors companies is 3.71, based on 1,012 companies in the industry. Companies in the top quartile (top 25%) have a ROC % significantly above this median, while those in the bottom quartile fall well below. However, ROC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Silicon Optronics's current ROC % of 21.29% is 473.9% above 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 % mean?
A high ROC % can signal that a stock is expensive relative to its fundamentals. Return on capital is the ratio of current-period net income to average two-period capital. View historical data on Silicon Optronics and its competitors. For the Semiconductors industry, the median ROC % is 3.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Silicon Optronics's current ROC % is 21.29%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Silicon Optronics stock overvalued right now?
Based on GuruFocus' analysis, Silicon Optronics (TPE:3530) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$83.84, compared to a current price of NT$73.20 — trading 12.7% below its estimated fair value. The current ROC % is 21.29% and 473.9% above the Semiconductors industry median of 3.71. Silicon Optronics' overall GF Score™ is 72/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC % calculated?
ROC % is calculated from a company's financial statements. For Silicon Optronics (TPE:3530), the current ROC % is 21.29% 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 Silicon Optronics (TPE:3530) Overvalued in 2026?
Based on GuruFocus' analysis, Silicon Optronics stock appears to be undervalued.
The current stock price of NT$73.20 is trading 12.7% below its estimated GF Value™ of NT$83.84.
GuruFocus considers Silicon Optronics to be Modestly Undervalued.
Key valuation signals for TPE:3530:
ROC %: 21.29%
GF Value™: NT$83.84 vs. price of NT$73.20 (12.7% below fair value)
Industry Position: 473.9% above the Semiconductors median
No single metric tells the full story. See the TPE:3530 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Silicon Optronics Inc is engaged in the design, development, and sale of complementary metal-oxide semiconductors. Its products include image sensors and shutters. The company derives revenue from complementary metal-oxide semiconductors. Geographically, it operates in Hong Kong, the United States, Taiwan, and other countries, with the majority of revenue deriving from Hong Kong.
72GF Score
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