SUMCO (STU:S3X) Net Interest Margin (Bank Only) %

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
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:S3X SUMCO Corp STU:S3X
70 GF Score
Price €26.95
GF Value €9.62
Valuation Significantly Overvalued
! 8 Warning Signs
View Full Analysis

What is SUMCO Net Interest Margin (Bank Only) %?

Net Interest Margin (Bank Only) % only applies to banks.

STU:S3X
70GF Score
SUMCO Corp STU:S3X
Net Interest Margin (Bank Only) % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Is SUMCO (STU:S3X) Overvalued in 2026?

Based on GuruFocus' analysis, SUMCO stock appears to be overvalued. The current stock price of €26.95 is trading 180.1% above its estimated GF Value™ of €9.62. GuruFocus considers SUMCO to be Significantly Overvalued.

Key valuation signals for STU:S3X:

  • Net Interest Margin (Bank Only) %:
  • GF Value™: €9.62 vs. price of €26.95 (180.1% above fair value)
  • GF Score™: 70/100 with 8 warning signs

No single metric tells the full story. See the STU:S3X stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

SUMCO Business Description

Address 1-2-1 Shibaura, Minato-ku, Tokyo, JPN, 105-8634
Founded in 1999 as a joint venture between Nippon Steel and two Mitsubishi entities, Sumco is the world's second-largest semiconductor-grade silicon wafer manufacturer, with an estimated 21% market share in 2025. Sumco is headquartered in Tokyo and operates seven production sites across Japan. It also maintains sales and support offices in Taiwan, the US, the UK, Indonesia, and Singapore. Sumco sells to most semiconductor manufacturers like TSMC, Intel, Samsung, and Micron. The firm employs over 9,700 people.
70GF Score

Get the complete analysis for STU:S3X

Net Interest Margin (Bank Only) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€26.95
Price
€9.62
GF Value