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.
Jet Optoelectronics Co's Operating Income for the
six
months ended in Dec. 2025 was NT$-88 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was NT$-238 Mil.
Warning Sign:
Jet Optoelectronics Co Ltd had lost money in 67% of the time over the past 3quarters.
Operating Income or EBIT is linked to Return on Capital for both regular definition and Joel Greenblatt's definition.
Jet Optoelectronics Co's annualizedROC % for the quarter that ended in Dec. 2025 was -7.24%.
Jet Optoelectronics Co's annualizedROC (Joel Greenblatt) % for the quarter that ended in Dec. 2025 was -7.87%.
* 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.
4. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Operating Income growth rate using Operating Income per share data.
Be Aware
Compared with a company's EBITDA margin, Operating Margin can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin may decline. Often the Operating Margin declines well before the company's revenue or even profit decline. Therefore, Operating Margin is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokia's Operating Margin had already been in decline since 2002, although its earnings per share were still rising. Investors who paid attention to Operating Margin would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Jet Optoelectronics Co Operating Income Related Terms
Jet Optoelectronics Co Operating Income Historical Data
* Premium members only.
The historical data trend for Jet Optoelectronics Co's Operating Income 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.
Jet Optoelectronics Co Operating Income Calculation
Operating Income, is the profit a company earned through operations. All expenses, including cash expenses such as cost of goods sold (COGS), research & development, wages, and non-cash expenses, such as depreciation, depletion and amortization, have been deducted from the sales.
Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 adds up the semi-annually data reported by the company within the most recent 12 months, which was NT$-238 Mil.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Jet Optoelectronics Co (ROCO:2255) has a Operating Income of NT$-238 Mil as of Dec. 2025. Operating Income equals sales less all operating expenses. It is linked to EBIT. View historical data on Jet Optoelectronics Co and its competitors.
Is Jet Optoelectronics Co's Operating Income too high?
Jet Optoelectronics Co's current Operating Income is NT$-238 Mil. Overall, Jet Optoelectronics Co has a GF Score™ of 60/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Jet Optoelectronics Co's Operating Income compare to ORLY and AZO?
Jet Optoelectronics Co's Operating Income of NT$-238 Mil can be compared against companies in the Vehicles & Parts industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Income for a Vehicles & Parts company?
A good Operating Income depends on the Vehicles & Parts industry context. However, Operating Income 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 Operating Income mean?
A high Operating Income can signal that a stock is expensive relative to its fundamentals. Operating Income equals sales less all operating expenses. It is linked to EBIT. View historical data on Jet Optoelectronics Co and its competitors. Jet Optoelectronics Co's current Operating Income is NT$-238 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jet Optoelectronics Co stock overvalued right now?
Based on GuruFocus' analysis, Jet Optoelectronics Co (ROCO:2255) is currently considered Possible Value Trap. The stock's GF Value™ is NT$29.90, compared to a current price of NT$15.90 — trading 46.8% below its estimated fair value. The current Operating Income is NT$-238 Mil. Jet Optoelectronics Co's overall GF Score™ is 60/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Income calculated?
Operating Income is calculated from a company's financial statements. For Jet Optoelectronics Co (ROCO:2255), the current Operating Income is NT$-238 Mil 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 Jet Optoelectronics Co (ROCO:2255) Overvalued in 2026?
Based on GuruFocus' analysis, Jet Optoelectronics Co stock appears to be undervalued.
The current stock price of NT$15.90 is trading 46.8% below its estimated GF Value™ of NT$29.90.
GuruFocus considers Jet Optoelectronics Co to be Possible Value Trap.
Key valuation signals for ROCO:2255:
Operating Income: NT$-238 Mil
GF Value™: NT$29.90 vs. price of NT$15.90 (46.8% below fair value)
No single metric tells the full story. See the ROCO:2255 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Jet Optoelectronics Co Ltd is engaged in the design, manufacture, and sales of high-value-added automotive multimedia audio-visual and human-machine interface systems, as well as the wholesale of automobile and motorcycle parts and equipment.
60GF Score
Get the complete analysis for ROCO:2255
Operating Income 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:2255 has been successfully added to your 
