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CorningBSP:G1LW34 -12.32%56 Piotroski F-Score is 6 as of Jul. 29, 2026, which is at its 10-year median of 6.00. GuruFocus rates BSP:G1LW34 with a GF Score™ of 56/100 and a GF Value™ of R$312.64 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 2,427 Hardware companies, Corning ranks better than 77.96% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Corning has an F-score of 8. It is a good or high score, which usually indicates a very healthy situation.
The historical rank and industry rank for Corning's Piotroski F-Score or its related term are showing as below:
BSP:G1LW34'
s Piotroski F-Score Range Over the Past 10 Years
Min: 3 Med: 6 Max: 8
Current: 6
During the past 13 years, the highest Piotroski F-Score of Corning was 8. The lowest was 3. And the median was 6.
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Corning Piotroski F-Score Related Terms
Corning Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Corning's Piotroski F-Score 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.
BSP:G1LW34 vs APH, TEL, FLEX: Piotroski F-Score Comparison
For the Electronic Components subindustry, Corning's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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.
Corning Piotroski F-Score vs Hardware Industry
For the Hardware industry and Technology sector, Corning's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Corning's Piotroski F-Score 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.
This Year (Jun26) TTM:
Last Year (Jun25) TTM:
Net Income was 2306.09 + 2946.078 + 1940.182 + 2864.372 = R$10,057 Mil. Cash Flow from Operations was 4204.592 + 5739.396 + 1893.115 + 8798.08 = R$20,635 Mil. Revenue was 21988.3 + 22995.775 + 21671.462 + 23084.07 = R$89,740 Mil. Gross Profit was 8151.76 + 8156.271 + 7990.829 + 8342.035 = R$32,641 Mil.
Average Total Assets from the begining of this year (Jun25)
to the end of this year (Jun26) was
(159414.021 + 160439.508 + 168995.763 + 163440.689 + 168869.84) / 5 = R$164231.9642 Mil. Total Assets at the begining of this year (Jun25) was R$159,414 Mil. Long-Term Debt & Capital Lease Obligation was R$39,743 Mil. Total Current Assets was R$55,940 Mil. Total Current Liabilities was R$30,852 Mil.
Net Income was -647.923 + 1891.31 + 904.022 + 2600.98 = R$4,748 Mil.
Revenue was 18778.68 + 21359.601 + 19876.961 + 21417.88 = R$81,433 Mil. Gross Profit was 6296.479 + 7302.897 + 6990.333 + 7719.754 = R$28,309 Mil.
Average Total Assets from the begining of last year (Jun24)
to the end of last year (Jun25) was
(146388.812 + 156841.572 + 169211.235 + 157737.391 + 159414.021) / 5 = R$157918.6062 Mil. Total Assets at the begining of last year (Jun24) was R$146,389 Mil. Long-Term Debt & Capital Lease Obligation was R$42,215 Mil. Total Current Assets was R$45,453 Mil. Total Current Liabilities was R$30,363 Mil.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Corning's current Net Income (TTM) was 10,057.
==> Positive ==> Score 1.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Corning's gearing of this year was 0.24199016. Corning's gearing of last year was 0.26731891.
==> This year is lower or equal to last year. ==> Score 1.
Question 6. Change in Working Capital (Liquidity)
Compare this year's current ratio (current assets divided by current liabilities) to last year's current ratio.
Score 1 if this year's current ratio is higher, 0 if it's lower
Corning's current ratio of this year was 1.81315398. Corning's current ratio of last year was 1.49698631.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Corning's number of shares in issue this year was 875. Corning's number of shares in issue last year was 865.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Corning's gross margin of this year was 0.36372897. Corning's gross margin of last year was 0.34764064.
==> This year's gross margin is higher. ==> Score 1.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Corning's asset turnover of this year was 0.56293422. Corning's asset turnover of last year was 0.55627968.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Corning has an F-score of 8. It is a good or high score, which usually indicates a very healthy situation.
Corning (BSP:G1LW34) has a Piotroski F-Score of 6 as of Jul. 29, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Corning and its competitors. This is near median its historical median of 6.00. Over the past decade, Corning's Piotroski F-Score has ranged from 3.00 to 8.00. According to the industry distribution chart, Corning ranks #535 out of 2427 companies in the Hardware industry, placing it in the top 22%.
Is Corning's Piotroski F-Score too high?
Corning's current Piotroski F-Score of 6 is near median its 10-year median of 6.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 8.00. The Hardware industry median Piotroski F-Score is 5.00. Corning's value of 6 is 20% above this industry median. Based on the distribution chart, Corning ranks #535 out of 2427 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Corning has a GF Score™ of 56/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Corning's Piotroski F-Score compare to APH and TEL?
According to the Hardware industry distribution chart, Corning ranks #535 out of 2427 companies for Piotroski F-Score. This places Corning in the top 22% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 5.00. Corning's value of 6 is 20% above this benchmark. Historically, Corning's own Piotroski F-Score has ranged from 3.00 to 8.00 over the past decade. While the company's 10-year median is 6.00 vs. the industry median of 5.00, Corning 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 Piotroski F-Score for a Hardware company?
The median Piotroski F-Score among Hardware companies is 5.00, based on 2,427 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Corning's current Piotroski F-Score of 6 is 20% 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Corning and its competitors. For the Hardware industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Corning's current Piotroski F-Score is 6, which is near median its own 10-year median of 6.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Corning stock overvalued right now?
Based on GuruFocus' analysis, Corning (BSP:G1LW34) is currently considered Significantly Overvalued. The stock's GF Value™ is R$312.64, compared to a current price of R$637.88 — trading 104% above its estimated fair value. The current Piotroski F-Score is 6, which is near median its 10-year median of 6.00 and 20% above the Hardware industry median of 5.00. Corning's overall GF Score™ is 56/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Corning (BSP:G1LW34), the current Piotroski F-Score is 6 as of Jul. 29, 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 Corning (BSP:G1LW34) Overvalued in 2026?
Based on GuruFocus' analysis, Corning stock appears to be overvalued.
The current stock price of R$637.88 is trading 104% above its estimated GF Value™ of R$312.64.
GuruFocus considers Corning to be Significantly Overvalued.
Key valuation signals for BSP:G1LW34:
Piotroski F-Score: 6 (near median its 10-year median of 6.00)
GF Value™: R$312.64 vs. price of R$637.88 (104% above fair value)
Industry Position: 20% above the Hardware median (#535 of 2427)
No single metric tells the full story. See the BSP:G1LW34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Corning is a provider of glass, ceramics, and optical fiber across six distinct end markets. Corning's largest segments by revenue are display glass for TVs and optical fiber for telecom networks and data centers. It also provides cover glass for smartphones as well as filters and substrates and glass for cars, produces pharmaceutical glass, and produces polysilicon for solar panels. Corning is a US producer and is vertically integrated across its products and markets.
56GF Score
Get the complete analysis for BSP:G1LW34
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