Formosa Optical Technology Co (ROCO:5312) 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.

ROCO:5312 Formosa Optical Technology Co Ltd ROCO:5312
83 GF Score
Price NT$88.80
GF Value NT$108.94
Valuation Modestly Undervalued
! 4 Warning Signs
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What is Formosa Optical Technology Co Net Interest Margin (Bank Only) %?

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

ROCO:5312
83GF Score
Formosa Optical Technology Co Ltd ROCO:5312
Net Interest Margin (Bank Only) % is just one metric. See GF Score™, valuation, warning signs, and more.
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Is Formosa Optical Technology Co (ROCO:5312) Overvalued in 2026?

Based on GuruFocus' analysis, Formosa Optical Technology Co stock appears to be undervalued. The current stock price of NT$88.80 is trading 18.5% below its estimated GF Value™ of NT$108.94. GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.

Key valuation signals for ROCO:5312:

  • Net Interest Margin (Bank Only) %:
  • GF Value™: NT$108.94 vs. price of NT$88.80 (18.5% below fair value)
  • GF Score™: 83/100 with 4 warning signs

No single metric tells the full story. See the ROCO:5312 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Formosa Optical Technology Co Business Description

Address No. 97, Xintai 5th Road, 16th Floor, Section 1, Xizhi District, New Taipei City, TWN
Formosa Optical Technology Co Ltd is mainly engaged in the eyewear business, including optometry services and the retail business selling contact lenses and eye drops. The Group mainly derives revenue from the business divisions of Formosa Optical Technology and Bo Wei Optical, with Formosa Optical Technology generating maximum revenue. The majority of revenue is derived from the sale of glasses. The Group generates the majority of its revenue from Taiwan.
83GF Score

Get the complete analysis for ROCO:5312

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

NT$88.80
Price
NT$108.94
GF Value