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.
FCF Margin % is calculated as Free Cash Flow divided by its Revenue. Truelight's Free Cash Flow for the
three
months ended in Dec. 2025 was NT$-24.0 Mil. Truelight's Revenue for the
three
months ended in Dec. 2025 was NT$173.1 Mil. Therefore, Truelight's FCF Margin % for the quarter that ended in Dec. 2025 was -13.86%.
The historical rank and industry rank for Truelight's FCF Margin % or its related term are showing as below:
ROCO:3234'
s FCF Margin % Range Over the Past 10 Years
Min: -26.88 Med: -0.79 Max: 21.72
Current: -12.29
During the past 13 years, the highest FCF Margin % of Truelight was 21.72%. The lowest was -26.88%. And the median was -0.79%.
ROCO:3234's FCF Margin % is ranked worse than 69.86% of 1022
companies
in the Semiconductors industry
Industry Median: -0.855
vs ROCO:3234: -12.29
Truelight FCF Margin % Related Terms
Truelight FCF Margin % Historical Data
* Premium members only.
The historical data trend for Truelight'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.
ROCO:3234 vs NVDA, AVGO, MU: FCF Margin % Comparison
For the Semiconductors subindustry, Truelight'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.
Truelight FCF Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Truelight's FCF Margin % distribution charts can be found below:
* The bar in red indicates where Truelight's FCF Margin % 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.
Truelight (ROCO:3234) has a FCF Margin % of -13.86% as of Dec. 2025. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Truelight and its competitors. According to the industry distribution chart, Truelight ranks #714 out of 1022 companies in the Semiconductors industry, placing it in the top 69.9%.
Is Truelight's FCF Margin % too high?
Truelight's current FCF Margin % is -13.86%. Based on the distribution chart, Truelight ranks #714 out of 1022 companies in the Semiconductors industry, which is below the industry midpoint. Overall, Truelight has a GF Score™ of 37/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Truelight's FCF Margin % compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Truelight ranks #714 out of 1022 companies for FCF Margin %. This places Truelight 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 Truelight and its competitors. Truelight's current FCF Margin % is -13.86%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Truelight stock overvalued right now?
Based on GuruFocus' analysis, Truelight (ROCO:3234) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$33.55, compared to a current price of NT$96.30 — trading 187% above its estimated fair value. The current FCF Margin % is -13.86%. Truelight's overall GF Score™ is 37/100 with 2 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 Truelight (ROCO:3234), the current FCF Margin % is -13.86% 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 Truelight (ROCO:3234) Overvalued in 2026?
Based on GuruFocus' analysis, Truelight stock appears to be overvalued.
The current stock price of NT$96.30 is trading 187% above its estimated GF Value™ of NT$33.55.
GuruFocus considers Truelight to be Significantly Overvalued.
Key valuation signals for ROCO:3234:
FCF Margin %: -13.86%
GF Value™: NT$33.55 vs. price of NT$96.30 (187% above fair value)
No single metric tells the full story. See the ROCO:3234 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Truelight Corp engages in the manufacturing and supply of components for the local area networks, storage area network, fiber to the home, and metro area network. The business items of the company are design, research and development, Production, and sales, which are applied to optical fiber communication, mobile communication base station interconnection, cloud data center, 3D Sensing/Near-Field Sensing/Flood Illumination Vertical Cavity Surface Emitting Laser, Edge laser, photodiode, including components, sub-modules, Light engine/AOC and other types of products. The products of the company include VCSEL chips, FP-LD chips, DFB-LD chips, and PIN chips.
37GF Score
Get the complete analysis for ROCO:3234
FCF Margin % 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:3234 has been successfully added to your 
