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Taiwan Glass IndTPE:1802 -6.08%45 Operating Margin % is 8.01% as of Mar. 2026, which is 507% above its 10-year median of 1.32. GuruFocus rates TPE:1802 with a GF Score™ of 45/100 and a GF Value™ of NT$18.84 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 402 Building Materials companies, Taiwan Glass Ind ranks worse than 65.17% on this metric.
Taiwan Glass Ind Corp had lost money in 50% of the time over the past 12quarters.
Taiwan Glass Ind (TPE:1802) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Taiwan Glass Ind Operating Margin % Related Terms
Taiwan Glass Ind Operating Margin % Historical Data
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The historical data trend for Taiwan Glass Ind's Operating 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.
TPE:1802 vs CRH, VMC, MLM: Operating Margin % Comparison
For the Building Materials subindustry, Taiwan Glass Ind's Operating Margin %, along with its competitors' market caps and Operating 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.
Taiwan Glass Ind Operating Margin % vs Building Materials Industry
For the Building Materials industry and Basic Materials sector, Taiwan Glass Ind's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Taiwan Glass Ind's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Taiwan Glass Ind's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* 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.
Taiwan Glass Ind (TPE:1802) has a Operating Margin % of 8.01% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Taiwan Glass Ind and its competitors. This is 507% above median its historical median of 1.32. According to the industry distribution chart, Taiwan Glass Ind ranks #262 out of 402 companies in the Building Materials industry, placing it in the top 65.2%.
Is Taiwan Glass Ind's Operating Margin % too high?
Taiwan Glass Ind's current Operating Margin % of 8.01% is 507% above median its 10-year median of 1.32. The Building Materials industry median Operating Margin % is 7.58. Taiwan Glass Ind's value of 8.01% is 5.7% above this industry median. Based on the distribution chart, Taiwan Glass Ind ranks #262 out of 402 companies in the Building Materials industry, which is below the industry midpoint. Overall, Taiwan Glass Ind has a GF Score™ of 45/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Taiwan Glass Ind's Operating Margin % compare to CRH and VMC?
According to the Building Materials industry distribution chart, Taiwan Glass Ind ranks #262 out of 402 companies for Operating Margin %. This places Taiwan Glass Ind in the lower half of its industry. The industry median Operating Margin % is 7.58. Taiwan Glass Ind's value of 8.01% is 5.7% above this benchmark. While the company's 10-year median is 1.32 vs. the industry median of 7.58, Taiwan Glass Ind 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 Operating Margin % for a Building Materials company?
The median Operating Margin % among Building Materials companies is 7.58, based on 402 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Taiwan Glass Ind's current Operating Margin % of 8.01% is 5.7% 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Taiwan Glass Ind and its competitors. For the Building Materials industry, the median Operating Margin % is 7.58 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Taiwan Glass Ind's current Operating Margin % is 8.01%, which is 507% above median its own 10-year median of 1.32. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Taiwan Glass Ind stock overvalued right now?
Based on GuruFocus' analysis, Taiwan Glass Ind (TPE:1802) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$18.84, compared to a current price of NT$51.00 — trading 170.7% above its estimated fair value. The current Operating Margin % is 8.01%, which is 507% above median its 10-year median of 1.32 and 5.7% above the Building Materials industry median of 7.58. Taiwan Glass Ind's overall GF Score™ is 45/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Taiwan Glass Ind (TPE:1802), the current Operating Margin % is 8.01% as of Mar. 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 Taiwan Glass Ind (TPE:1802) Overvalued in 2026?
Based on GuruFocus' analysis, Taiwan Glass Ind stock appears to be overvalued.
The current stock price of NT$51.00 is trading 170.7% above its estimated GF Value™ of NT$18.84.
GuruFocus considers Taiwan Glass Ind to be Significantly Overvalued.
Key valuation signals for TPE:1802:
Operating Margin %: 8.01% (507% above median its 10-year median of 1.32)
GF Value™: NT$18.84 vs. price of NT$51.00 (170.7% above fair value)
Industry Position: 5.7% above the Building Materials median (#262 of 402)
No single metric tells the full story. See the TPE:1802 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Taiwan Glass Ind Corp is engaged in the manufacturing, processing, and selling of various glass products. Its products include flat glass, auto glass, ultra-thin glass, photoelectric glass, fiber glass, and containers, tableware & kitchenware. The company's segments include Flat Glass Segment, engaged in the manufacturing and selling of flat glass; Glass Container Segment, engaged in the manufacturing and selling of glass containers; and Glass Fiber Segment, engaged in the manufacturing and selling of glass fibers. It derives the majority of its revenue from the Flat Glass segment. Geographically, its operations are spread across Taiwan, China, and Other countries.
45GF Score
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Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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