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.
Goldtek Technology Co's Operating Income for the
six
months ended in Jun. 2026 was NT$3 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Jun. 2026 was NT$-117 Mil.
Operating Income or EBIT is linked to Return on Capital for both regular definition and Joel Greenblatt's definition.
Goldtek Technology Co's annualizedROC % for the quarter that ended in Jun. 2026 was 0.34%.
Goldtek Technology Co's annualizedROC (Joel Greenblatt) % for the quarter that ended in Jun. 2026 was 22.77%.
* 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.
Goldtek Technology Co Operating Income Related Terms
Goldtek Technology Co Operating Income Historical Data
* Premium members only.
The historical data trend for Goldtek Technology 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.
Goldtek Technology 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 Jun. 2026 adds up the semi-annually data reported by the company within the most recent 12 months, which was NT$-117 Mil.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Goldtek Technology Co (ROCO:6638) has a Operating Income of NT$-117 Mil as of Jun. 2026. Operating Income equals sales less all operating expenses. It is linked to EBIT. View historical data on Goldtek Technology Co and its competitors.
Is Goldtek Technology Co's Operating Income too high?
Goldtek Technology Co's current Operating Income is NT$-117 Mil. Overall, Goldtek Technology Co has a GF Score™ of 65/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Goldtek Technology Co's Operating Income compare to CSCO and MSI?
Goldtek Technology Co's Operating Income of NT$-117 Mil can be compared against companies in the Hardware 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 Hardware company?
A good Operating Income depends on the Hardware 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 Goldtek Technology Co and its competitors. Goldtek Technology Co's current Operating Income is NT$-117 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Goldtek Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Goldtek Technology Co (ROCO:6638) is currently considered Fairly Valued. The stock's GF Value™ is NT$46.19, compared to a current price of NT$46.10 — trading 0.2% below its estimated fair value. The current Operating Income is NT$-117 Mil. Goldtek Technology Co's overall GF Score™ is 65/100 with 5 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 Goldtek Technology Co (ROCO:6638), the current Operating Income is NT$-117 Mil as of Jun. 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 Goldtek Technology Co (ROCO:6638) Overvalued in 2026?
Based on GuruFocus' analysis, Goldtek Technology Co stock appears to be undervalued.
The current stock price of NT$46.10 is trading 0.2% below its estimated GF Value™ of NT$46.19.
GuruFocus considers Goldtek Technology Co to be Fairly Valued.
Key valuation signals for ROCO:6638:
Operating Income: NT$-117 Mil
GF Value™: NT$46.19 vs. price of NT$46.10 (0.2% below fair value)
No single metric tells the full story. See the ROCO:6638 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Goldtek Technology Co Ltd is engaged in customization and contract manufacturing for information and communication technology devices for various industries. Its services include software development, PCBA board level design, and turn-key solution which includes ID/ME design, hardware/software development, quality testing, manufacturing and EMC/Safety certification tests.
65GF Score
Get the complete analysis for ROCO:6638
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:6638 has been successfully added to your 
