Corning's stock dropped significantly after reporting slower fiber optics growth. The company forecast lower third-quarter sales, disappointing market experts. This decline erased billions in the company's market value. Investors noted a slowdown in the vital optical communications segment. The stock's rapid surge over the past year led to a pullback.

Corning beats Q2 estimates with 32% optical growth and NVDA/AMZN AI deals, but shares drop ~20% on in-line Q3 guidance.

Corning's stock dropped significantly after reporting slower fiber optics growth. The company forecast lower third-quarter sales, disappointing market experts. This decline erased…