Why Shares of Corning Are Tumbling Lower Today

Source Motley_fool

Key Points

  • Corning reported Q3 2026 financial results before the market opened this morning.

  • In addition to revenue, Corning reported earnings that surpassed analysts' expectations.

  • Corning stock is trading at 30.8 times forward earnings.

  • Motley Fool Issues Rare "Total Conviction" Buy Alert ›

Announcing third-quarter 2026 financial results before the market opened today, Corning (NYSE:GLW) provided investors with a lot to celebrate. With shares of the specialized glass manufacturer dipping lower this morning, though, it's clear that investors weren't impressed with the company's recent performance.

As of 1:08 p.m., ET, Corning shares are down 1%, paring back an earlier loss of 4.7%.

Missed AI’s "Act 1"? Act 2 Could Be 15x Bigger. Most investors think they missed the AI boat because they didn't buy Nvidia in 2005. But according to our analysts, we’re only at the end of "Act 1"—the R&D phase. "Act 2" is the global rollout. Continue »

Concerned trader watches volatile stock charts on multiple screens in an office.

Image source: Getty Images.

Corning grows Q3 core sales 19% year over year, but investors are more focused on something else

Corning reported revenue of $436 million for its solar business in Q3 2026, a quarter-over-quarter decrease from the $438 million it reported in Q2 2026. In addition, Corning reported a $7 million net loss for its solar business, consistent with the $7 million net loss it incurred in Q2 2026 and a sharper loss from the same period in 2025, when it reported $30 million in net income for its solar business.

In the Q2 2026 earnings presentation, management stated that the solar business's revenue and profitability would improve in Q3.

Reporting Q3 2026 core sales of $5.08 billion, Corning beat analysts' expectations of $5.03 billion. At the bottom of the income statement, the company reported Q3 core earnings per share (EPS) of $0.91 -- better than the $0.88 that analysts had anticipated.

Corning manufactures specialized glass, ceramics, and optical materials for numerous applications, including smartphone screens, televisions, telecommunications networks, automotive emissions systems, and laboratory equipment.

For the fourth quarter, Corning projects sales growth of about 19% year over year and EPS growth of 36% year over year.

Is Corning stock a buy today?

Investors may find the drop in the solar business disconcerting, but given the company's otherwise strong quarter, it's certainly reasonable to consider picking up shares. With shares trading at 30.8 times forward earnings, investors may want to wait for a further pullback before clicking the buy button on this tech stock.

Should you buy stock in Corning right now?

Before you buy stock in Corning, consider this:

The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Corning wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.

Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $344,608!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,327,222!*

Now, it’s worth noting Stock Advisor’s total average return is 904% — a market-crushing outperformance compared to 211% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.

See the 10 stocks »

*Stock Advisor returns as of October 27, 2026.

Scott Levine has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Corning. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
placeholder
Today’s Market Recap: Dow Gains Over 1%, SpaceX Surges More Than 8% After Hours, Supermicro Jumps Over 14%, Netflix Falls More Than 5%Tracking the Market TrendTradingKey - As of the close on October 20 Eastern Time, the Dow Jones Industrial Average rose 1.02% to 52,495.88, the Nasdaq Composite slipped 0.02% to 26,424.82, and the S&P
Author  TradingKey
Oct 21, Wed
Tracking the Market TrendTradingKey - As of the close on October 20 Eastern Time, the Dow Jones Industrial Average rose 1.02% to 52,495.88, the Nasdaq Composite slipped 0.02% to 26,424.82, and the S&P
placeholder
3 Stocks That Can Benefit From SpaceX’s Surprise Q3 EarningsSpaceX’s latest earnings have given Wall Street a reason to revisit AI hardware stocks. Elon Musk’s company is preparing to spend billions more on computing infrastructure, and three US-listed stocks
Author  Beincrypto
Oct 21, Wed
SpaceX’s latest earnings have given Wall Street a reason to revisit AI hardware stocks. Elon Musk’s company is preparing to spend billions more on computing infrastructure, and three US-listed stocks
placeholder
Can Bitcoin Price Hold Above $80,000 This Week?Bitcoin has recovered to around $82,500 after briefly falling below $80,000 last week.But the rebound faces a major test on Wednesday, when fresh US oil inventory data could revive the inflation fears
Author  Beincrypto
Oct 20, Tue
Bitcoin has recovered to around $82,500 after briefly falling below $80,000 last week.But the rebound faces a major test on Wednesday, when fresh US oil inventory data could revive the inflation fears
placeholder
Tesla Q3 Earnings Preview: Can Auto Margins Stabilize? Wall Street’s Highest Price Target at $550TradingKey - Tesla (TSLA) will report its third-quarter 2026 financial results after the U.S. stock market close on October 21, Eastern Time, and host an earnings conference call at 17:30 that day. Th
Author  TradingKey
Oct 20, Tue
TradingKey - Tesla (TSLA) will report its third-quarter 2026 financial results after the U.S. stock market close on October 21, Eastern Time, and host an earnings conference call at 17:30 that day. Th
placeholder
SpaceX Stock Price Forecast: Rebounds to $148 Ahead of Earnings, $152–$160 Becomes Key Resistance ZoneTradingKey - As of the close on Monday (October 19) Eastern Time, SpaceX (SPCX) closed at $147.96, up 1.32% on the day, reaching an intraday high of $151.01. The closing price was noticeably under pre
Author  TradingKey
Oct 20, Tue
TradingKey - As of the close on Monday (October 19) Eastern Time, SpaceX (SPCX) closed at $147.96, up 1.32% on the day, reaching an intraday high of $151.01. The closing price was noticeably under pre
goTop
quote