Corning Landed Amazon, Nvidia, and Now Verizon, So Why Did Its Stock Crash 46% in July?

Corning (NYSE:GLW | GLW Price Prediction) shares fell 45.88% between June 30 and July 31, 2026, sliding from $254.95 to $137.99 on an adjusted basis. That is one of the worst monthly stretches in the company’s modern history, and it happened in the exact window when Corning was disclosing multibillion-dollar fiber commitments from the largest names in AI infrastructure. The company has executed no splits, spinoffs, or special dividends to distort the figure. Its only recorded split, a 3-for-1 forward split, occurred on October 4, 2000. The July drawdown is real.

What It Means

The selloff collided with an order book that was accelerating, not slowing. On the July 28 earnings call, Corning reported that Optical Communications sales rose 32% year over year to $2.07 billion, with Enterprise sales up 65% to $1.27 billion and Gen AI product sales nearly doubling. Optical segment net income climbed 77% to $438 million. Core EPS came in at $0.78 versus the $0.75 consensus, the fifth consecutive EPS beat. Free cash flow reached $1.423 billion, up 255.75% year over year. Revenue of $4.505 billion missed expectations by 2.69%, and that single miss appears to have anchored the July repricing even as management upgraded its long-term plan.

Market Reaction

Shares opened the recovery arc slowly. Corning traded at $142.20 on the day of the Q2 filing (July 28, 2026), down from $169.11 on the Q1 filing day (April 28, 2026). The stock closed at $137.99 on July 31, 2026. Since then the tape has turned. Corning is up 13.01% over the past week and 7.44% over the past month, closing at $168.04 as of the September 8 quote. Year to date, shares are up 92.93%. Over one year, up 143.13%. The July drop, in other words, compressed a runaway rally while the underlying business kept expanding.

Bull Case

The customer roster is the story. In Q2, Corning cited a multiyear, multibillion-dollar Amazon agreement for optical fiber, cable, and connectivity for U.S. data centers, plus a long-term NVIDIA partnership to expand U.S. optical connectivity manufacturing capacity by 10x and U.S. fiber production capacity by more than 50%. On September 8, Verizon (NYSE:VZ) joined the list: the two companies announced a multiyear, multibillion-dollar agreement for 80 million plus miles of high density optical fiber solutions, designed to expand broadband and build the network connecting AI data centers for major hyperscalers. That is three giant, multiyear commitments layered on top of an existing up-to-$6 billion Meta agreement and Apple’s $2.5 billion commitment for 100% of iPhone and Apple Watch cover glass at the Kentucky facility.

Management has priced this into a hard target. CEO Wendell Weeks said Corning expects to reach an annualized sales run rate of $20 billion by end of 2026, $30 billion by end of 2028, and $40 billion by end of 2030, with a 19% sales CAGR from Q4 2026 to Q4 2030 and operating margins at or above 20%. Q2 core operating margin was already 20.9%, up 190 basis points, and core ROIC hit 14.9%, up 180 basis points. Weeks told investors “We’re entering a new phase of accelerating growth”. The July drawdown compressed the multiple on a business whose contracted demand keeps expanding. Corning is one of several picks-and-shovels suppliers to the AI buildout that never make the chipmaker headlines (we profiled seven of them, from fiber to power to cooling, in a free report here: 7 Stocks Powering the AI Boom (That Aren’t Chipmakers)). For retirement-focused holders, the setup is straightforward: the customer commitments are longer-dated than the quarter that spooked the tape.

Bottom Line

The forward catalyst is already on the board. Corning guided Q3 core sales to $4.90 billion to $5.00 billion, roughly 16% year-over-year growth, and core EPS to $0.85 to $0.89, roughly 28% year-over-year growth. Solar is building toward a $3 billion revenue stream. The 45.88% July slide priced in a revenue miss and near-term execution risk. The Verizon deal, arriving on top of Amazon and NVIDIA, is the market’s chance to reassess whether the AI fiber order book was the real signal all along.

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