J.P. Morgan placed Corning on its Negative Catalyst Watch on July 16, 2026. The bank cited high valuation ahead of the second-quarter earnings report on July 28.
Corning shares have gained nearly 100% year-to-date. Analysts warned the current valuation leaves little room for error in upcoming results.
The firm flagged potential weakness in TV display data for late 2026. It also noted a possible slowdown in the Optical Carrier segment.
This move follows a recent double downgrade from another firm citing unsustainable valuation. J.P. Morgan maintains a Neutral rating and a $200 price target. Corning shares fell significantly following the report.