East Tender Optoelectronics (ROCO:6588) FCF Margin %: -37.96% (As of Dec. 2025)

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ROCO:6588 East Tender Optoelectronics Corp ROCO:6588
55 GF Score
Price NT$81.50
GF Value NT$35.22
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is East Tender Optoelectronics FCF Margin %?

East Tender Optoelectronics ROCO:6588 +9.99% 55 FCF Margin % is -37.96% as of Dec. 2025. GuruFocus rates ROCO:6588 with a GF Score™ of 55/100 and a GF Value™ of NT$35.22 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 1,023 Semiconductors companies, East Tender Optoelectronics ranks worse than 95.11% on this metric.

FCF Margin % is calculated as Free Cash Flow divided by its Revenue. East Tender Optoelectronics's Free Cash Flow for the three months ended in Dec. 2025 was NT$-21.1 Mil. East Tender Optoelectronics's Revenue for the three months ended in Dec. 2025 was NT$55.5 Mil. Therefore, East Tender Optoelectronics's FCF Margin % for the quarter that ended in Dec. 2025 was -37.96%.

As of today, East Tender Optoelectronics's current FCF Yield % is -6.66%.

The historical rank and industry rank for East Tender Optoelectronics's FCF Margin % or its related term are showing as below:

ROCO:6588' s FCF Margin % Range Over the Past 10 Years
Min: -108.65   Med: -15.2   Max: 28.07
Current: -108.65


During the past 13 years, the highest FCF Margin % of East Tender Optoelectronics was 28.07%. The lowest was -108.65%. And the median was -15.20%.

ROCO:6588's FCF Margin % is ranked worse than
95.11% of 1023 companies
in the Semiconductors industry
Industry Median: -0.88 vs ROCO:6588: -108.65


East Tender Optoelectronics FCF Margin % Related Terms


East Tender Optoelectronics FCF Margin % Historical Data

* Premium members only.

The historical data trend for East Tender Optoelectronics's FCF Margin % 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.

East Tender Optoelectronics FCF Margin % Chart

East Tender Optoelectronics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
FCF Margin %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -88.85 -50.24 -54.48 -19.80 -108.65

East Tender Optoelectronics Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
FCF Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only -0.28 -160.93 -73.64 -201.60 -37.96

ROCO:6588 vs NVDA, AVGO, MU: FCF Margin % Comparison

For the Semiconductors subindustry, East Tender Optoelectronics's FCF Margin %, along with its competitors' market caps and FCF Margin % 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.


East Tender Optoelectronics FCF Margin % vs Semiconductors Industry

For the Semiconductors industry and Technology sector, East Tender Optoelectronics's FCF Margin % distribution charts can be found below:

* The bar in red indicates where East Tender Optoelectronics's FCF Margin % falls into.


ROCO:6588
55GF Score
East Tender Optoelectronics Corp ROCO:6588
FCF Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

East Tender Optoelectronics FCF Margin % Calculation

FCF margin is the ratio of Free Cash Flow divided by net sales or Revenue, usually presented in percent.

East Tender Optoelectronics's FCF Margin for the fiscal year that ended in Dec. 2025 is calculated as

FCF Margin=Free Cash Flow (A: Dec. 2025 )/Revenue (A: Dec. 2025 )
=-188.179/173.202
=-108.65 %

East Tender Optoelectronics's FCF Margin for the quarter that ended in Dec. 2025 is calculated as

FCF Margin=Free Cash Flow (Q: Dec. 2025 )/Revenue (Q: Dec. 2025 )
=-21.06/55.475
=-37.96 %

* 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.

Frequently Asked Questions Learn more about FCF Margin % →
What does a FCF Margin % of -37.96% mean?
East Tender Optoelectronics (ROCO:6588) has a FCF Margin % of -37.96% as of Dec. 2025. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on East Tender Optoelectronics and its competitors. According to the industry distribution chart, East Tender Optoelectronics ranks #973 out of 1023 companies in the Semiconductors industry, placing it in the top 95.1%.
Is East Tender Optoelectronics' FCF Margin % too high?
East Tender Optoelectronics' current FCF Margin % is -37.96%. Based on the distribution chart, East Tender Optoelectronics ranks #973 out of 1023 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, East Tender Optoelectronics has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does East Tender Optoelectronics' FCF Margin % compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, East Tender Optoelectronics ranks #973 out of 1023 companies for FCF Margin %. This places East Tender Optoelectronics 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 FCF Margin % for a Semiconductors company?
A good FCF Margin % depends on the Semiconductors industry context. However, FCF Margin % 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 FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on East Tender Optoelectronics and its competitors. East Tender Optoelectronics's current FCF Margin % is -37.96%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is East Tender Optoelectronics stock overvalued right now?
Based on GuruFocus' analysis, East Tender Optoelectronics (ROCO:6588) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$35.22, compared to a current price of NT$81.50 — trading 131.4% above its estimated fair value. The current FCF Margin % is -37.96%. East Tender Optoelectronics' overall GF Score™ is 55/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For East Tender Optoelectronics (ROCO:6588), the current FCF Margin % is -37.96% 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 East Tender Optoelectronics (ROCO:6588) Overvalued in 2026?

Based on GuruFocus' analysis, East Tender Optoelectronics stock appears to be overvalued. The current stock price of NT$81.50 is trading 131.4% above its estimated GF Value™ of NT$35.22. GuruFocus considers East Tender Optoelectronics to be Significantly Overvalued.

Key valuation signals for ROCO:6588:

  • FCF Margin %: -37.96%
  • GF Value™: NT$35.22 vs. price of NT$81.50 (131.4% above fair value)
  • GF Score™: 55/100 with 3 warning signs

No single metric tells the full story. See the ROCO:6588 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


East Tender Optoelectronics Business Description

Address No. 70, Section 2, Ligong 1st Road, Wujie Township, Yilan, TWN
East Tender Optoelectronics Corp is a Taiwan-based company engaged in developing and providing optical coating products and services. It offers narrow-band and broad-band filter chips.
55GF Score

Get the complete analysis for ROCO:6588

FCF Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$81.50
Price
NT$35.22
GF Value