Corning Tumbles 12% on $2B At-the-Market Equity Offering; Coherent Sinks 11%, Lumentum Drops 9%, Fabrinet Slides 6%

Sep 14, 2026
corning-tumbles-12%-on-$2b-at-the-market-equity-offering;-coherent-sinks-11%,-lumentum-drops-9%,-fabrinet-slides-6%

David Moadel

5 min read

Quick Read

  • Corning’s open-ended $2B at-the-market equity offering with Goldman Sachs sent GLW down 12%, pulling Coherent and Lumentum 11% and 9% lower.

  • Weekend AI lab commentary calling for slower frontier development hit NVIDIA’s optical supply chain, sending Fabrinet down 6% on sector sympathy alone.

  • Just released. Our analysts combed the entire stock market and named the ten best stocks to buy right now, and Corning didn’t make the cut. Enter your email to see the names that beat GLW. The report is free. Enter your email and see if any of your stocks made the cut.

Shares of Corning Incorporated (NYSE:GLW) are down 12% to $145.61 in Monday afternoon trading after the company disclosed a $2 billion at-the-market equity distribution program. The selloff makes Corning the worst performer in the S&P 500 today, and it’s dragging a tight cluster of artificial intelligence (AI) optical connectivity peers sharply lower alongside it. Barron’s flagged the move as the day’s worst in the S&P 500, adding that company-specific dilution is a distinct driver on top of any sector sympathy.

Close-up shot of multiple parallel red laser beams shining through a dark environment, hitting and reflecting off a round, dark optical lens with a green band. Bright red light sources are visible in the background and as reflections on the lens, which also shows some scattered red specks. The surface below the lens is dark red and textured.

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Coherent (NYSE:COHR) stock is down 11% to $273.30, Lumentum (NASDAQ:LITE) stock is falling 9% to $843, and Fabrinet (NYSE:FN) stock is sliding 6% to $389.69. The SPDR S&P 500 ETF Trust (NYSEARCA:SPY) is down 0.2%, so Corning stock is falling many multiples harder than the broad market and every optics peer beside it.

Today’s decline caps a violent reversal in a name that had ridden hyperscaler capital spending on optical interconnects hard, with Corning up 67.2% year to date heading into the session. The session blends a company-specific dilution event at Corning with a sector selloff hitting the entire optics group at once.

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$2 Billion At-the-Market Program Sparks Selloff, according to Corning

Corning disclosed in a Friday regulatory filing that it entered an equity distribution agreement to sell common stock through an at-the-market program raising up to $2 billion. Goldman Sachs (NYSE:GS) is the exclusive sales agent under the agreement. Corning stated net proceeds would go toward general corporate purposes, drawing on a shelf registration filed earlier this year.

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