Corning's stock price dropped 5.91% on May 15, 2026.
JPMorgan and other financial institutions downgraded the company to hold or neutral ratings. Analysts cited high valuations following a substantial rally as a primary concern. These downgrades triggered significant profit-taking among investors.
The company issued second-quarter revenue guidance that fell short of Wall Street expectations. Management attributed the weaker outlook to ongoing softness in the consumer electronics sector. Corning also expects additional expenses related to facility maintenance and upgrades.
Recent insider sales further decreased market confidence.