On July 28, 2026, Corning Incorporated GLW reported solid growth in its second-quarter earnings, with both revenue and profit exceeding expectations. The company achieved GAAP sales of $4.51 billion, a 17% increase year-over-year, and core sales of $4.74 billion, also up 17%. GAAP net income reached $559 million, translating to earnings per share of $0.64, while core EPS was $0.78, surpassing market predictions.
- GF Valueâ„¢ verdict: Corning Inc is currently priced at $117.30, which is 90.1% overvalued compared to its GF Valueâ„¢ of $61.72.
- GF Scoreâ„¢: 68/100, indicating a moderate overall performance.
- Insider activity: Over the past three months, insiders have sold $54.1 million worth of shares, with no insider buying reported.
What's Behind the News?
The strong earnings report from Corning Inc highlights the company's ability to capitalize on growing demand in its optical communications segment, which saw a remarkable 32% increase in sales to $2.07 billion. This growth is largely driven by large customers expanding data centers for generative AI applications. Additionally, the solar business experienced a staggering 90% revenue increase, reaching $438 million. However, the life sciences and emerging growth sectors faced challenges, with a 15% decline in sales, indicating some weaknesses in the company's diversified portfolio.
Corning Inc operates in the technology sector, specifically within the hardware industry, and is recognized as a leading manufacturer and supplier of specialty glass and ceramics. With a market capitalization of approximately $100.95 billion, the company serves multiple end markets, including display glass for TVs, optical fiber for telecom networks, and solar panels. The recent earnings report and positive guidance for the third quarter suggest that Corning is well-positioned for continued growth, despite the recent stock price decline.
Is GLW Overvalued or Undervalued?
According to GuruFocus, Corning's GF Valueâ„¢ is calculated at $61.72, indicating that the stock is significantly overvalued at its current price of $117.30, representing a 90.1% premium. This valuation suggests a considerable margin of safety for potential investors, as the stock price exceeds the intrinsic value derived from historical trading multiples and future performance estimates. The current P/E (TTM) ratio stands at 56.12x, which is notably higher than its 5-year median P/E of 46.02x, further reinforcing the notion that the stock may be overvalued. For more details, visit the GF Valueâ„¢ page.
What Does GLW's GF Scoreâ„¢ Tell Us?
The GF Scoreâ„¢ is a comprehensive measure that evaluates a company's financial strength, profitability, growth potential, valuation, and momentum. Corning's GF Scoreâ„¢ of 68/100 reflects a moderate performance, with strengths in profitability and growth, but weaknesses in valuation and momentum.
| Metric | Rating |
|---|---|
| GF Scoreâ„¢ | 68 |
| Financial Strength | 6/10 |
| Profitability | 7/10 |
| Growth | 8/10 |
| Valuation | 1/10 |
| Momentum | 3/10 |
Corning's strengths lie in its profitability and growth rankings, which are relatively strong at 7 and 8 out of 10, respectively. However, the valuation rank is concerning at 1 out of 10, indicating that the stock may be overpriced compared to its intrinsic value. For more insights, visit the GLW stock page.
What Are Gurus and Insiders Doing with GLW?
Currently, 14 gurus hold shares of Corning Inc, with 6 adding to their positions while 10 have trimmed their holdings in recent quarters. This indicates a mixed sentiment among institutional investors. Additionally, insider activity has been predominantly negative, with no reported insider buying and a total of $54.1 million in insider selling over the past three months, suggesting a lack of confidence from those closest to the company.

What This Means for Investors
In conclusion, while Corning Inc has reported strong earnings and growth in key segments, the significant overvaluation indicated by the GF Valueâ„¢ and the concerning insider selling activity may warrant caution for potential investors. The disparity between the stock price and intrinsic value suggests that investors should carefully consider their positions in GLW. For further analysis, check out the GLW stock page.
Frequently Asked Questions
What is GLW's GF Scoreâ„¢?
GLW's GF Scoreâ„¢ is 68/100, indicating a moderate overall performance based on various financial metrics.
Is GLW overvalued or undervalued?
GLW is currently overvalued, with a GF Valueâ„¢ of $61.72 compared to its market price of $117.30, reflecting a 90.1% overvaluation.
What is GLW's P/E ratio compared to historical?
GLW's current P/E (TTM) ratio is 56.12x, which is significantly higher than its 5-year median P/E of 46.02x, indicating potential overvaluation.
This stock alert was generated using automated technology and GuruFocus financial data to provide readers with timely and accurate market reporting. This content was reviewed by GuruFocus editorial team prior to publication. Please send any questions or comments about this story to [email protected].
