FDK (STU:5FN) Insider Ownership: 0.00 % (As of Sep. 01, 2026)

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Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Founder & CEO of GuruFocus
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.

STU:5FN FDK Corp STU:5FN
56 GF Score
Price €2.26
GF Value €2.65
! 4 Warning Signs
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What is FDK Insider Ownership?

FDK STU:5FN +4.63% 56 Insider Ownership is 0.00 % as of Sep. 01, 2026. GuruFocus rates STU:5FN with a GF Score™ of 56/100 and a GF Value™ of €2.65. The stock has 4 warning signs investors should review.

Insider ownership is the percentage of shares that are owned by company insiders relative to the total shares outstanding. As of today, FDK's insider ownership is 0.00%.

Institutional Ownership is the percentage of shares that are owned by institutions out of the total shares outstanding. As of today, FDK's Institutional Ownership is 0.04%.

Float Percentage Of Total Shares Outstanding is the percentage of float shares relative to the total shares outstanding. As of today, FDK's Float Percentage Of Total Shares Outstanding is 0.00%.

FDK Insider Ownership Historical Data

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The historical data trend for FDK's Insider Ownership 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.

FDK Insider Ownership Chart

FDK Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Insider Ownership
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

FDK Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Insider Ownership 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 0.00 0.00 0.00 0.00 0.00
STU:5FN
56GF Score
FDK Corp STU:5FN
Insider Ownership is just one metric. See GF Score™, valuation, warning signs, and more.
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FDK Insider Ownership Calculation

The percentage of shares that are owned by company insiders relative to the total shares outstanding.

Frequently Asked Questions Learn more about Insider Ownership →
What does a Insider Ownership of 0.00 % mean?
FDK (STU:5FN) has a Insider Ownership of 0.00 % as of Sep. 01, 2026. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on FDK and its competitors.
Is FDK's Insider Ownership too high?
FDK's current Insider Ownership is 0.00 %. Overall, FDK has a GF Score™ of 56/100, reflecting its overall financial health beyond just this single metric.
How does FDK's Insider Ownership compare to VRT and BE?
FDK's Insider Ownership of 0.00 % can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Insider Ownership for an Industrial Products company?
A good Insider Ownership depends on the Industrial Products industry context. However, Insider Ownership 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 Insider Ownership mean?
A high Insider Ownership can signal that a stock is expensive relative to its fundamentals. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on FDK and its competitors. FDK's current Insider Ownership is 0.00 %. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is FDK stock overvalued right now?
FDK (STU:5FN) has a current Insider Ownership of 0.00 %. The stock's GF Value™ is €2.65, compared to a current price of €2.26 — trading 14.7% below its estimated fair value. The current Insider Ownership is 0.00 %. FDK's overall GF Score™ is 56/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Insider Ownership calculated?
Insider Ownership is calculated from a company's financial statements. For FDK (STU:5FN), the current Insider Ownership is 0.00 % as of Sep. 01, 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 FDK (STU:5FN) Overvalued in 2026?

Based on GuruFocus' analysis, FDK stock appears to be undervalued. The current stock price of €2.26 is trading 14.7% below its estimated GF Value™ of €2.65.

Key valuation signals for STU:5FN:

  • Insider Ownership: 0.00 %
  • GF Value™: €2.65 vs. price of €2.26 (14.7% below fair value)
  • GF Score™: 56/100 with 4 warning signs

No single metric tells the full story. See the STU:5FN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

FDK Business Description

Other Exchanges 6955:Japan
Address Hamagomu Bldg, 5-36-11 Shimbashi, Minato-ku, Tokyo, JPN, 105-8677
FDK Corp is a Japan-based company, engages in the manufacture and sale of electronic-related materials and products, as well as batteries. The company offers alkaline, nickel-metal hydride, lithium, and carbon-zinc batteries; and power storage systems, Li-ion capacitors, electric lights, and production systems for batteries. It also provides switching power supplies, coil devices, DC-DC power modules, multilayer power inductors, ceramic products, toners, and signal processing modules for LCDs.
56GF Score

Get the complete analysis for STU:5FN

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

€2.26
Price
€2.65
GF Value