Fulltech Fiber Glass (ROCO:1815) FCF Margin %: -32.99% (As of Dec. 2025)


ROCO:1815 Fulltech Fiber Glass Corp ROCO:1815
59 GF Score
Price NT$96.50
GF Value NT$35.94
Valuation Significantly Overvalued
! 1 Warning Sign
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What is Fulltech Fiber Glass FCF Margin %?

Fulltech Fiber Glass ROCO:1815 -3.02% 59 FCF Margin % is -32.99% as of Dec. 2025. GuruFocus rates ROCO:1815 with a GF Score™ of 59/100 and a GF Value™ of NT$35.94 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 2,472 Hardware companies, Fulltech Fiber Glass ranks worse than 89% on this metric.

FCF Margin % is calculated as Free Cash Flow divided by its Revenue. Fulltech Fiber Glass's Free Cash Flow for the three months ended in Dec. 2025 was NT$-540 Mil. Fulltech Fiber Glass's Revenue for the three months ended in Dec. 2025 was NT$1,637 Mil. Therefore, Fulltech Fiber Glass's FCF Margin % for the quarter that ended in Dec. 2025 was -32.99%.

As of today, Fulltech Fiber Glass's current FCF Yield % is -3.03%.

The historical rank and industry rank for Fulltech Fiber Glass's FCF Margin % or its related term are showing as below:

ROCO:1815' s FCF Margin % Range Over the Past 10 Years
Min: -28.6   Med: -5.82   Max: 26.19
Current: -28.6


During the past 13 years, the highest FCF Margin % of Fulltech Fiber Glass was 26.19%. The lowest was -28.60%. And the median was -5.82%.

ROCO:1815's FCF Margin % is ranked worse than
89% of 2472 companies
in the Hardware industry
Industry Median: 0.645 vs ROCO:1815: -28.60


Fulltech Fiber Glass FCF Margin % Related Terms


Fulltech Fiber Glass FCF Margin % Historical Data

* Premium members only.

The historical data trend for Fulltech Fiber Glass'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.

Fulltech Fiber Glass FCF Margin % Chart

Fulltech Fiber Glass 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 17.66 26.19 -17.26 -23.83 -28.60

Fulltech Fiber Glass 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 -11.11 -39.96 -4.42 -36.12 -32.99

ROCO:1815 vs APH, GLW: FCF Margin % Comparison

For the Electronic Components subindustry, Fulltech Fiber Glass'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.


Fulltech Fiber Glass FCF Margin % vs Hardware Industry

For the Hardware industry and Technology sector, Fulltech Fiber Glass's FCF Margin % distribution charts can be found below:

* The bar in red indicates where Fulltech Fiber Glass's FCF Margin % falls into.


ROCO:1815
59GF Score
Fulltech Fiber Glass Corp ROCO:1815
FCF Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Fulltech Fiber Glass FCF Margin % Calculation

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

Fulltech Fiber Glass'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 )
=-1708.97/5974.753
=-28.60 %

Fulltech Fiber Glass'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 )
=-540.023/1637.092
=-32.99 %

* 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 -32.99% mean?
Fulltech Fiber Glass (ROCO:1815) has a FCF Margin % of -32.99% as of Dec. 2025. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Fulltech Fiber Glass and its competitors. According to the industry distribution chart, Fulltech Fiber Glass ranks #2200 out of 2472 companies in the Hardware industry, placing it in the top 89%.
Is Fulltech Fiber Glass' FCF Margin % too high?
Fulltech Fiber Glass' current FCF Margin % is -32.99%. Based on the distribution chart, Fulltech Fiber Glass ranks #2200 out of 2472 companies in the Hardware industry, which is in the bottom quartile relative to peers. Overall, Fulltech Fiber Glass has a GF Score™ of 59/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Fulltech Fiber Glass' FCF Margin % compare to APH and GLW?
According to the Hardware industry distribution chart, Fulltech Fiber Glass ranks #2200 out of 2472 companies for FCF Margin %. This places Fulltech Fiber Glass in the lower half of its industry. The industry median FCF Margin % is 0.65. 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 Hardware company?
The median FCF Margin % among Hardware companies is 0.65, based on 2,472 companies in the industry. Companies in the top quartile (top 25%) have a FCF Margin % significantly above this median, while those in the bottom quartile fall well below. 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 Fulltech Fiber Glass and its competitors. For the Hardware industry, the median FCF Margin % is 0.65 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Fulltech Fiber Glass's current FCF Margin % is -32.99%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Fulltech Fiber Glass stock overvalued right now?
Based on GuruFocus' analysis, Fulltech Fiber Glass (ROCO:1815) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$35.94, compared to a current price of NT$96.50 — trading 168.5% above its estimated fair value. The current FCF Margin % is -32.99%. Fulltech Fiber Glass' overall GF Score™ is 59/100 with 1 warning sign 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 Fulltech Fiber Glass (ROCO:1815), the current FCF Margin % is -32.99% 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 Fulltech Fiber Glass (ROCO:1815) Overvalued in 2026?

Based on GuruFocus' analysis, Fulltech Fiber Glass stock appears to be overvalued. The current stock price of NT$96.50 is trading 168.5% above its estimated GF Value™ of NT$35.94. GuruFocus considers Fulltech Fiber Glass to be Significantly Overvalued.

Key valuation signals for ROCO:1815:

  • FCF Margin %: -32.99%
  • GF Value™: NT$35.94 vs. price of NT$96.50 (168.5% above fair value)
  • GF Score™: 59/100 with 1 warning sign

No single metric tells the full story. See the ROCO:1815 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Fulltech Fiber Glass Business Description

Address No. 8, Dougong 16th Road, Yunlin County, Douliu, TWN
Fulltech Fiber Glass Corp is engaged in producing and selling fiberglass yarn and fiberglass fabric, which are the main upstream materials for Printed Circuit Boards. The reportable segments of the company are the Fiberglass Yarn and the Fiberglass Fabric segment. Geographically, the company generates a majority of its revenue from Taiwan and the rest from China.
59GF Score

Get the complete analysis for ROCO:1815

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

NT$96.50
Price
NT$35.94
GF Value