Corning (WBO:GLW) Cyclically Adjusted PB Ratio: (As of Jul. 29, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

WBO:GLW Corning Inc WBO:GLW
62 GF Score
Price €104.44
GF Value €51.19
Valuation Significantly Overvalued
! 2 Warning Signs
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What is Corning Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Corning  (WBO:GLW) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Corning Cyclically Adjusted PB Ratio Related Terms


Corning Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Corning's Cyclically Adjusted PB Ratio 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 Cyclically Adjusted PB Ratio Chart

Corning Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.19 1.80 1.72 2.71 5.06

Corning Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 3.00 4.69 5.06 7.79 0.00

WBO:GLW vs APH, TEL, FLEX: Cyclically Adjusted PB Ratio Comparison

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

For the Hardware industry and Technology sector, Corning's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Corning's Cyclically Adjusted PB Ratio falls into.


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

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Corning's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Corning's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=12.46/333.9520*333.9520
=12.460

Current CPI (Jun. 2026) = 333.9520.

Corning Quarterly Data

Book Value per Share CPI Adj_Book
201609 14.448 241.428 19.985
201612 15.963 241.432 22.080
201703 16.269 243.801 22.285
201706 16.932 244.955 23.084
201709 15.896 246.819 21.508
201712 13.195 246.524 17.875
201803 11.807 249.554 15.800
201806 12.250 251.989 16.234
201809 12.637 252.439 16.718
201812 12.819 251.233 17.040
201903 12.796 254.202 16.810
201906 12.639 256.143 16.478
201909 12.691 256.759 16.506
201912 12.528 256.974 16.281
202003 11.802 258.115 15.270
202006 11.406 257.797 14.775
202009 11.558 260.280 14.829
202012 11.773 260.474 15.094
202103 12.107 264.877 15.264
202106 11.846 271.696 14.560
202109 12.334 274.310 15.016
202112 13.150 278.802 15.751
202203 13.609 287.504 15.808
202206 13.471 296.311 15.182
202209 13.848 296.808 15.581
202212 13.773 296.797 15.497
202303 13.533 301.836 14.973
202306 12.845 305.109 14.059
202309 13.061 307.789 14.171
202312 12.415 306.746 13.516
202403 12.115 312.332 12.954
202406 11.533 314.175 12.259
202409 11.704 315.301 12.396
202412 11.950 315.605 12.645
202503 11.613 319.799 12.127
202506 11.266 322.561 11.664
202509 11.487 324.800 11.811
202512 11.761 324.054 12.120
202603 11.894 330.213 12.029
202606 12.460 333.952 12.460

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

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.

Is Corning (WBO:GLW) Overvalued in 2026?

Based on GuruFocus' analysis, Corning stock appears to be overvalued. The current stock price of €104.44 is trading 104% above its estimated GF Value™ of €51.19. GuruFocus considers Corning to be Significantly Overvalued.

Key valuation signals for WBO:GLW:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €51.19 vs. price of €104.44 (104% above fair value)
  • GF Score™: 62/100 with 2 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

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

€104.44
Price
€51.19
GF Value