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St Shine Optical CoROCO:1565 -0.93%67 Pretax Margin % is 15.05% as of Dec. 2025, which is 36% below its 10-year median of 23.40. GuruFocus rates ROCO:1565 with a GF Score™ of 67/100 and a GF Value™ of NT$171.33 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 817 Medical Devices & Instruments companies, St Shine Optical Co ranks better than 76.74% on this metric.
The historical rank and industry rank for St Shine Optical Co's Pretax Margin % or its related term are showing as below:
ROCO:1565'
s Pretax Margin % Range Over the Past 10 Years
Min: 14.02 Med: 23.4 Max: 33.34
Current: 14.02
ROCO:1565's Pretax Margin % is ranked better than 76.74% of 817
companies
in the Medical Devices & Instruments industry
Industry Median: 2.61
vs ROCO:1565: 14.02
St Shine Optical Co (ROCO:1565) Pretax Margin % Explanation
The pretax margin, as know as pretax profit margin, is widely used to measure the operating efficiency of a company before deducting taxes.
The pretax margin is sometimes preferred over the net margin as tax expenditures can make profitability comparisons between companies misleading.
It is a useful tool to compare companies operating in the same sector and less effective when comparing companies from other sectors as each industry generally has different operating expenses and sales patterns.
The long term trend of the pretax margin is a good indicator of the competitiveness and health of the business.
St Shine Optical Co Pretax Margin % Related Terms
St Shine Optical Co Pretax Margin % Historical Data
* Premium members only.
The historical data trend for St Shine Optical Co's Pretax 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:1565 vs ISRG, BDX, MDLN: Pretax Margin % Comparison
For the Medical Instruments & Supplies subindustry, St Shine Optical Co's Pretax Margin %, along with its competitors' market caps and Pretax 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.
St Shine Optical Co Pretax Margin % vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, St Shine Optical Co's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where St Shine Optical Co's Pretax 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.
St Shine Optical Co (ROCO:1565) has a Pretax Margin % of 15.05% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on St Shine Optical Co and its competitors. This is 36% below median its historical median of 23.40. Over the past decade, St Shine Optical Co's Pretax Margin % has ranged from 14.02 to 33.34. According to the industry distribution chart, St Shine Optical Co ranks #190 out of 817 companies in the Medical Devices & Instruments industry, placing it in the top 23.3%.
Is St Shine Optical Co's Pretax Margin % too high?
St Shine Optical Co's current Pretax Margin % of 15.05% is 36% below median its 10-year median of 23.40. Over the past 10 years, this metric has ranged from a low of 14.02 to a high of 33.34. The Medical Devices & Instruments industry median Pretax Margin % is 2.61. St Shine Optical Co's value of 15.05% is 476.6% above this industry median. Based on the distribution chart, St Shine Optical Co ranks #190 out of 817 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, St Shine Optical Co has a GF Score™ of 67/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does St Shine Optical Co's Pretax Margin % compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, St Shine Optical Co ranks #190 out of 817 companies for Pretax Margin %. This places St Shine Optical Co in the top 23% of its industry — outperforming the majority of peers. The industry median Pretax Margin % is 2.61. St Shine Optical Co's value of 15.05% is 476.6% above this benchmark. Historically, St Shine Optical Co's own Pretax Margin % has ranged from 14.02 to 33.34 over the past decade. While the company's 10-year median is 23.40 vs. the industry median of 2.61, St Shine Optical Co has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Pretax Margin % for a Medical Devices & Instruments company?
The median Pretax Margin % among Medical Devices & Instruments companies is 2.61, based on 817 companies in the industry. Companies in the top quartile (top 25%) have a Pretax Margin % significantly above this median, while those in the bottom quartile fall well below. However, Pretax Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. St Shine Optical Co's current Pretax Margin % of 15.05% is 476.6% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Pretax Margin % mean?
A high Pretax Margin % can signal that a stock is expensive relative to its fundamentals. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on St Shine Optical Co and its competitors. For the Medical Devices & Instruments industry, the median Pretax Margin % is 2.61 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. St Shine Optical Co's current Pretax Margin % is 15.05%, which is 36% below median its own 10-year median of 23.40. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is St Shine Optical Co stock overvalued right now?
Based on GuruFocus' analysis, St Shine Optical Co (ROCO:1565) is currently considered Possible Value Trap. The stock's GF Value™ is NT$171.33, compared to a current price of NT$95.80 — trading 44.1% below its estimated fair value. The current Pretax Margin % is 15.05%, which is 36% below median its 10-year median of 23.40 and 476.6% above the Medical Devices & Instruments industry median of 2.61. St Shine Optical Co's overall GF Score™ is 67/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Pretax Margin % calculated?
Pretax Margin % is calculated from a company's financial statements. For St Shine Optical Co (ROCO:1565), the current Pretax Margin % is 15.05% 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 St Shine Optical Co (ROCO:1565) Overvalued in 2026?
Based on GuruFocus' analysis, St Shine Optical Co stock appears to be undervalued.
The current stock price of NT$95.80 is trading 44.1% below its estimated GF Value™ of NT$171.33.
GuruFocus considers St Shine Optical Co to be Possible Value Trap.
Key valuation signals for ROCO:1565:
Pretax Margin %: 15.05% (36% below median its 10-year median of 23.40)
GF Value™: NT$171.33 vs. price of NT$95.80 (44.1% below fair value)
Industry Position: 476.6% above the Medical Devices & Instruments median (#190 of 817)
No single metric tells the full story. See the ROCO:1565 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
St Shine Optical Co Ltd is engaged in the manufacturing and trading of contact lenses (soft and hard), optical lenses, and related products. Geographically, the company generates maximum of its revenue from Asia (excluding Taiwan), followed by Europe, Taiwan, and America.
67GF Score
Get the complete analysis for ROCO:1565
Pretax Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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