Corning (WBO:GLW) E10: €1.17 (As of Mar. 2026)


WBO:GLW Corning Inc WBO:GLW
62 GF Score
Price €195.50
GF Value €52.07
Valuation Significantly Overvalued
! 7 Warning Signs
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What is Corning E10?

Corning WBO:GLW +4.50% 62 E10 is €1.17 as of Mar. 2026. GuruFocus rates WBO:GLW with a GF Score™ of 62/100 and a GF Value™ of €52.07 (Significantly Overvalued). The stock has 7 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Corning's adjusted earnings per share data for the three months ended in Mar. 2026 was €0.372. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €1.17 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Corning's average E10 Growth Rate was 17.50% per year. During the past 3 years, the average E10 Growth Rate was -2.70% per year. During the past 5 years, the average E10 Growth Rate was -1.00% per year. During the past 10 years, the average E10 Growth Rate was -4.10% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Corning was 45.20% per year. The lowest was -19.10% per year. And the median was 0.80% per year.

As of today (2026-06-26), Corning's current stock price is €195.50. Corning's E10 for the quarter that ended in Mar. 2026 was €1.17. Corning's Shiller PE Ratio of today is 167.09.

During the past 13 years, the highest Shiller PE Ratio of Corning was 162.08. The lowest was 10.85. And the median was 23.33.


Corning  (WBO:GLW) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Corning's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=195.50/1.17
=167.09

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Corning was 162.08. The lowest was 10.85. And the median was 23.33.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Corning E10 Related Terms


Corning E10 Historical Data

* Premium members only.

The historical data trend for Corning's E10 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.

Corning E10 Chart

Corning Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.17 1.31 1.22 1.16 1.12

Corning Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 1.08 1.04 1.05 1.12 1.17

WBO:GLW vs APH, TEL, FLEX: E10 Comparison

For the Electronic Components subindustry, Corning's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio 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 Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Corning's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Corning's Shiller PE Ratio falls into.


WBO:GLW
62GF Score
Corning Inc WBO:GLW
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Corning E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Corning's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.372/330.2130*330.2130
=0.372

Current CPI (Mar. 2026) = 330.2130.

Corning Quarterly Data

per share eps CPI Adj_EPS
201606 1.664 241.018 2.280
201609 0.232 241.428 0.317
201612 1.394 241.432 1.907
201703 0.065 243.801 0.088
201706 0.374 244.955 0.504
201709 0.327 246.819 0.437
201712 -1.403 246.524 -1.879
201803 -0.584 249.554 -0.773
201806 0.668 251.989 0.875
201809 0.574 252.439 0.751
201812 0.281 251.233 0.369
201903 0.487 254.202 0.633
201906 0.080 256.143 0.103
201909 0.345 256.759 0.444
201912 0.009 256.974 0.012
202003 -0.145 258.115 -0.186
202006 -0.115 257.797 -0.147
202009 0.408 260.280 0.518
202012 0.230 260.474 0.292
202103 0.563 264.877 0.702
202106 -0.349 271.696 -0.424
202109 0.366 274.310 0.441
202112 0.496 278.802 0.587
202203 0.617 287.504 0.709
202206 0.624 296.311 0.695
202209 0.242 296.808 0.269
202212 -0.038 296.797 -0.042
202303 0.187 301.836 0.205
202306 0.305 305.109 0.330
202309 0.178 307.789 0.191
202312 -0.046 306.746 -0.050
202403 0.221 312.332 0.234
202406 0.111 314.175 0.117
202409 -0.126 315.301 -0.132
202412 0.344 315.605 0.360
202503 0.166 319.799 0.171
202506 0.468 322.561 0.479
202509 0.426 324.800 0.433
202512 0.529 324.054 0.539
202603 0.372 330.213 0.372

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of €1.17 mean?
Corning (WBO:GLW) has a E10 of €1.17 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Corning and its competitors.
Is Corning's E10 too high?
Corning's current E10 is €1.17. Overall, Corning has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Corning's E10 compare to APH and TEL?
Corning's E10 of €1.17 can be compared against companies in the Hardware industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for a Hardware company?
A good E10 depends on the Hardware industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Corning and its competitors. Corning's current E10 is €1.17. 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 (WBO:GLW) is currently considered Significantly Overvalued. The stock's GF Value™ is €52.07, compared to a current price of €195.50 — trading 275.5% above its estimated fair value. The current E10 is €1.17. Corning's overall GF Score™ is 62/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Corning (WBO:GLW), the current E10 is €1.17 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 Corning (WBO:GLW) Overvalued in 2026?

Based on GuruFocus' analysis, Corning stock appears to be overvalued. The current stock price of €195.50 is trading 275.5% above its estimated GF Value™ of €52.07. GuruFocus considers Corning to be Significantly Overvalued.

Key valuation signals for WBO:GLW:

  • E10: €1.17
  • GF Value™: €52.07 vs. price of €195.50 (275.5% above fair value)
  • GF Score™: 62/100 with 7 warning signs

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


Corning Business Description

Address One Riverfront Plaza, Corning, NY, USA, 14831
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.
62GF Score

Get the complete analysis for WBO:GLW

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€195.50
Price
€52.07
GF Value