DiodesDIOD -3.66%67 3-Year ROIIC % is -228.23 as of Dec. 2025. GuruFocus rates DIOD with a GF Score™ of 67/100 and a GF Value™ of $68.08 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 996 Semiconductors companies, Diodes ranks worse than 96.18% on this metric.
3-Year Return on Invested Incremental Capital (3-Year ROIIC %) measures the change in earnings as a percentage of change in investment over 3-year.
Diodes's 3-Year ROIIC % for the quarter that ended in Dec. 2025 was -228.23%. High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
The industry rank for Diodes's 3-Year ROIIC % or its related term are showing as below:
DIOD's 3-Year ROIIC % is ranked worse than 96.18% of 996
companies
in the Semiconductors industry
Industry Median: -0.155
vs DIOD: -228.23
Diodes (NAS:DIOD) 3-Year ROIIC % Explanation
Return on Incremental Invested Capital (ROIIC) is an extension of Return on Investment Capital (ROIC). ROIC % tells investors how efficiently that profitability is earned per dollar of company capital. ROIIC narrows the focus even further and shows how profitable each additional unit of capital investment could be. ROIIC % is a more powerful metric than ROIC because it measures how much money the company can generate going forward on future capital investments.
High ROIIC is generally an indication that your business is capital efficient or has a higher operating leverage.
Be Aware
It's important to keep in mind that when tracking ROIIC, the metric is better suited to forecasting the trend of future returns rather than measuring current return on investment.
Diodes 3-Year ROIIC % Related Terms
Diodes 3-Year ROIIC % Historical Data
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The historical data trend for Diodes's 3-Year ROIIC % 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.
DIOD vs SYNA, POWI, NVTS: 3-Year ROIIC % Comparison
For the Semiconductors subindustry, Diodes's 3-Year ROIIC %, along with its competitors' market caps and 3-Year ROIIC % 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.
Diodes 3-Year ROIIC % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Diodes's 3-Year ROIIC % distribution charts can be found below:
* The bar in red indicates where Diodes's 3-Year ROIIC % falls into.
* 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.
** Annual data of NOPAT and Invested Capital was used to calculate 3-Year ROIIC %.
*** Please be aware that the ROIIC (Return on Invested Capital) calculations are based on company-level data using the primary share class. The calculated data provided is for demonstration purposes and may slightly differ from the results displayed in the title due to potential variations caused by currency exchange rate differences throughout the year.
Diodes (DIOD) has a 3-Year ROIIC % of -228.23 as of Dec. 2025. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Diodes and its competitors. According to the industry distribution chart, Diodes ranks #958 out of 996 companies in the Semiconductors industry, placing it in the top 96.2%.
Is Diodes' 3-Year ROIIC % too high?
Diodes' current 3-Year ROIIC % is -228.23. Based on the distribution chart, Diodes ranks #958 out of 996 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, Diodes has a GF Score™ of 67/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Diodes' 3-Year ROIIC % compare to SYNA and POWI?
According to the Semiconductors industry distribution chart, Diodes ranks #958 out of 996 companies for 3-Year ROIIC %. This places Diodes in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year ROIIC % for a Semiconductors company?
A good 3-Year ROIIC % depends on the Semiconductors industry context. However, 3-Year ROIIC % 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 3-Year ROIIC % mean?
A high 3-Year ROIIC % can signal that a stock is expensive relative to its fundamentals. 3-Year ROIIC % measures the change in earnings as a percentage of change in investment over 3-year. View historical data on Diodes and its competitors. Diodes's current 3-Year ROIIC % is -228.23. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diodes stock overvalued right now?
Based on GuruFocus' analysis, Diodes (DIOD) is currently considered Significantly Overvalued. The stock's GF Value™ is $68.08, compared to a current price of $105.45 — trading 54.9% above its estimated fair value. The current 3-Year ROIIC % is -228.23. Diodes' overall GF Score™ is 67/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year ROIIC % calculated?
3-Year ROIIC % is calculated from a company's financial statements. For Diodes (DIOD), the current 3-Year ROIIC % is -228.23 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 Diodes (DIOD) Overvalued in 2026?
Based on GuruFocus' analysis, Diodes stock appears to be overvalued.
The current stock price of $105.45 is trading 54.9% above its estimated GF Value™ of $68.08.
GuruFocus considers Diodes to be Significantly Overvalued.
Key valuation signals for DIOD:
3-Year ROIIC %: -228.23
GF Value™: $68.08 vs. price of $105.45 (54.9% above fair value)
No single metric tells the full story. See the DIOD stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Diodes Inc is a manufacturer and supplier of high-quality application-specific products within the broad discrete, logic, analog, and mixed-signal semiconductor markets. It serves the customer electronics, computing, communications, industrial, and automotive markets. The Company's products include diodes; rectifiers; transistors; MOSFETs; GPP bridges; GPP rectifiers; protection devices; function-specific arrays; single gate logic; amplifiers and comparators; Hall-effect and temperature sensors; and power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, voltage references along with special-function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers.
67GF Score
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