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SUMCOSUMCF +9.50%72 Debt-to-Equity is 0.65 as of Jun. 2026, which is 23% above its 10-year median of 0.53. GuruFocus rates SUMCF with a GF Score™ of 72/100 and a GF Value™ of $8.10 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 910 Semiconductors companies, SUMCO ranks worse than 73.3% on this metric.
A high debt to equity ratio generally means that a company has been aggressive in financing its growth with debt. This can result in volatile earnings as a result of the additional interest expense.
The historical rank and industry rank for SUMCO's Debt-to-Equity or its related term are showing as below:
SUMCF'
s Debt-to-Equity Range Over the Past 10 Years
Min: 0.25 Med: 0.53 Max: 0.89
Current: 0.65
During the past 13 years, the highest Debt-to-Equity Ratio of SUMCO was 0.89. The lowest was 0.25. And the median was 0.53.
SUMCF's Debt-to-Equity is ranked worse than 73.3% of 910
companies
in the Semiconductors industry
Industry Median: 0.26
vs SUMCF: 0.65
Because a company can increase its ROE % by having more financial leverage, it is important to watch the leverage ratio when investing in high ROE % companies.
SUMCO Debt-to-Equity Related Terms
SUMCO Debt-to-Equity Historical Data
* Premium members only.
The historical data trend for SUMCO's Debt-to-Equity 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.
SUMCF vs AMAT, LRCX, KLAC: Debt-to-Equity Comparison
For the Semiconductor Equipment & Materials subindustry, SUMCO's Debt-to-Equity, along with its competitors' market caps and Debt-to-Equity 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.
SUMCO Debt-to-Equity vs Semiconductors Industry
For the Semiconductors industry and Technology sector, SUMCO's Debt-to-Equity distribution charts can be found below:
* The bar in red indicates where SUMCO's Debt-to-Equity 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.
SUMCO (SUMCF) has a Debt-to-Equity of 0.65 as of Jun. 2026. Debt-to-Equity ratio represents the ratio of total debt to total company equity. View historical data on SUMCO and its competitors. This is 23% above median its historical median of 0.53. Over the past decade, SUMCO's Debt-to-Equity has ranged from 0.25 to 0.89. According to the industry distribution chart, SUMCO ranks #667 out of 910 companies in the Semiconductors industry, placing it in the top 73.3%.
Is SUMCO's Debt-to-Equity too high?
SUMCO's current Debt-to-Equity of 0.65 is 23% above median its 10-year median of 0.53. Over the past 10 years, this metric has ranged from a low of 0.25 to a high of 0.89. The Semiconductors industry median Debt-to-Equity is 0.26. SUMCO's value of 0.65 is 150% above this industry median. Based on the distribution chart, SUMCO ranks #667 out of 910 companies in the Semiconductors industry, which is below the industry midpoint. Overall, SUMCO has a GF Score™ of 72/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does SUMCO's Debt-to-Equity compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, SUMCO ranks #667 out of 910 companies for Debt-to-Equity. This places SUMCO in the lower half of its industry. The industry median Debt-to-Equity is 0.26. SUMCO's value of 0.65 is 150% above this benchmark. Historically, SUMCO's own Debt-to-Equity has ranged from 0.25 to 0.89 over the past decade. While the company's 10-year median is 0.53 vs. the industry median of 0.26, SUMCO 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 Debt-to-Equity for a Semiconductors company?
The median Debt-to-Equity among Semiconductors companies is 0.26, based on 910 companies in the industry. Companies in the top quartile (top 25%) have a Debt-to-Equity significantly above this median, while those in the bottom quartile fall well below. However, Debt-to-Equity should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. SUMCO's current Debt-to-Equity of 0.65 is 150% 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 Debt-to-Equity mean?
A high Debt-to-Equity can signal that a stock is expensive relative to its fundamentals. Debt-to-Equity ratio represents the ratio of total debt to total company equity. View historical data on SUMCO and its competitors. For the Semiconductors industry, the median Debt-to-Equity is 0.26 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. SUMCO's current Debt-to-Equity is 0.65, which is 23% above median its own 10-year median of 0.53. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SUMCO stock overvalued right now?
Based on GuruFocus' analysis, SUMCO (SUMCF) is currently considered Significantly Overvalued. The stock's GF Value™ is $8.10, compared to a current price of $23.00 — trading 184% above its estimated fair value. The current Debt-to-Equity is 0.65, which is 23% above median its 10-year median of 0.53 and 150% above the Semiconductors industry median of 0.26. SUMCO's overall GF Score™ is 72/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Debt-to-Equity calculated?
Debt-to-Equity is calculated from a company's financial statements. For SUMCO (SUMCF), the current Debt-to-Equity is 0.65 as of Jun. 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 SUMCO (SUMCF) Overvalued in 2026?
Based on GuruFocus' analysis, SUMCO stock appears to be overvalued.
The current stock price of $23.00 is trading 184% above its estimated GF Value™ of $8.10.
GuruFocus considers SUMCO to be Significantly Overvalued.
Key valuation signals for SUMCF:
Debt-to-Equity: 0.65 (23% above median its 10-year median of 0.53)
GF Value™: $8.10 vs. price of $23.00 (184% above fair value)
Industry Position: 150% above the Semiconductors median (#667 of 910)
No single metric tells the full story. See the SUMCF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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.
72GF Score
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