Corning's deep expertise in glass science and manufacturing processes creates high barriers to entry. This allows them to develop specialized materials for demanding applications.

↑AI-Driven Optical Demand

The surge in AI and hyperscale data center growth fuels demand for Corning's optical fiber and components. This positions them to benefit from a secular trend.

↑Diversified End Markets

Beyond AI, Corning's presence in solar, life sciences, and automotive provides resilience. This diversification mitigates reliance on any single sector's performance.

INVESTMENT RISKS

↓AI Spending Rationalization

A potential slowdown or 'rationalization' in AI spending could temper the rapid growth seen in optical demand. This might impact future revenue streams.

↓Market Volatility

Stock price fluctuations, like the recent 4.2% drop, indicate sensitivity to market sentiment and investor expectations. This can create short-term uncertainty.

↓Competitive Pressures

While proprietary technology is a moat, intense competition in the hardware and equipment sectors could emerge. New entrants or established players might challenge market share.

Base case

GLW base case PE valuation

A base case PE valuation for GLW estimates a fair value of about $175.97 per share, against a current price of $255.79. The model assumes 20.0% annual earnings growth, a 50x target PE multiple, and a 10% discount rate.

Intrinsic Value

$175.97

Margin of safety

-45.4%

Expected annual return

-7.2%

Base case assumptions: 20.0% annual earnings growth, 50x target PE, 10% discount rate, 5 year projection. Data as of 2026-06-29.

This base case uses default assumptions and is not financial advice. The fair value changes significantly when the target PE or earnings growth rate changes. Open the calculator to set your own assumptions and see the full sensitivity range.

Customize the GLW PE valuation

Adjust the target PE, earnings growth, and discount rate to see how the fair value and margin of safety for Corning Inc respond.

Open PE Calculator for GLW

Or try DCF Valuation for GLW →

Company Overview

Corning Incorporated operates in optical communications, display, specialty materials, automotive, and life sciences businesses in the United States, Canada, Mexico, Japan, Taiwan, China, South Korea, Germany, and internationally. The company provides optical fibers and cables; and hardware and equipment products, such as cable assemblies, fiber optic hardware and connectors, optical components and couplers, closures, network interface devices, and other accessories for the telecommunications industry, businesses, governments, and individuals. It also offers glass substrates for flat panel displays, including liquid crystal displays and organic light-emitting diodes that are used in televisions, notebook computers, desktop monitors, tablets, and handheld devices. In addition, it manufactures products that offer material formulations for glass, glass ceramics, crystals, precision metrology instruments, and software, as well as glass wafers and substrates, tinted sunglasses, and radiation shielding products for markets, such as mobile consumer electronics, semiconductor equipment optics and consumables, aerospace and defense optics, radiation shielding products, sunglasses, and telecommunications components. Further, the company provides ceramic substrates and filter products for emissions control in mobile, gasoline, and diesel applications, as well as technical glass and optic products and solutions for the interior and exterior of vehicles. Additionally, it offers laboratory products, including plastic vessels, liquid handling plastics, specialty surfaces, cell culture media, and serum, as well as general labware, and glassware and equipment under the Corning, Falcon, PYREX, and Axygen brands. It also offers polysilicon products and pharmaceutical glass tubing and vials. The company was formerly known as Corning Glass Works and changed its name to Corning Incorporated in April 1989. Corning Incorporated was founded in 1851 and is headquartered in Corning, New York.

Financial Metrics — GLW PE Stock Valuation Data

PE Ratio (TTM)

121.2x

PEG Ratio

0.39

Earnings Yield

0.82%

ROE (TTM)

15.6%

Revenue/Share (TTM)

$18.92

Dividend Yield

0.44%

Debt/Equity

0.76x

Frequently Asked Questions

What is the PE ratio of GLW?

The trailing twelve-month PE ratio of GLW reflects how much investors pay per dollar of Corning Inc's earnings. This metric is most useful when compared to Hardware, Equipment & Parts peers and the company's own historical range.

Is GLW overvalued based on PE ratio?

GLW's PE of 121.2x combined with a PEG ratio of 0.39 provides a growth-adjusted perspective. A PEG below 1.0 suggests GLW may be undervalued relative to its earnings growth rate. Keep in mind that PE-based valuation works best for profitable, mature companies — for high-growth or cyclical Hardware, Equipment & Parts, a DCF analysis may be more appropriate.

How do I value GLW stock using PE ratio?

To value Corning Inc using PE: (1) Compare the current PE (121.2x) against the Hardware, Equipment & Parts median to assess relative pricing, (2) check the PEG ratio (0.39) to adjust for growth expectations, (3) review the 5-year PE range to identify where the stock sits historically, and (4) estimate fair value by multiplying a target PE by forward EPS estimates. This relative approach complements DCF's absolute valuation.

What is the PEG ratio of GLW?

GLW's PEG ratio is 0.39, calculated by dividing the PE ratio (121.2x) by the expected earnings growth rate. A PEG below 1.0 is traditionally considered a sign of undervaluation — the market may not be fully pricing in the growth potential. Note that PEG accuracy depends on the reliability of growth estimates.

Should I use PE ratio or DCF for GLW stock valuation?

PE ratio gives a quick relative read — how GLW is priced versus Hardware, Equipment & Parts peers. DCF provides an absolute value based on projected free cash flows. For GLW, with a strong ROE of 15.6%, both methods are worth using — PE for a market-relative check, DCF to stress-test whether fundamentals justify the price. Each method has blind spots: PE ignores capital structure and cash flow quality, while DCF is sensitive to growth and discount rate assumptions.

Learn More

See GLW DCF Valuation → — Intrinsic value via Discounted Cash Flow analysis
PE Methodology — Step-by-step guide to PE ratio stock valuation
DCF Methodology — Guide to discounted cash flow analysis
PE Ratio — Understanding the price-to-earnings ratio
Intrinsic Value — How to evaluate stock fair value

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P/E and DCF value GLW with different methods and assumptions, so the two conclusions can differ. Compare the DCF intrinsic value.

Price as of 2026-06-29. Financial data from Financial Modeling Prep (trailing twelve months) · Valuation methodology by Charlie Wang.

This is an estimate, not investment advice.