Corning Incorporated experienced significant downward price momentum, driven by a combination of customer-specific revenue concerns, valuation sensitivity following a multi-month rally, and broader weakness across the technology sector. The immediate headwind stems from emerging supply chain reports indicating that Apple has abandoned plans for an all-glass anniversary iPhone due to production yield challenges. Given Corning’s key role as a primary supplier of specialty cover glass, the cancellation raised fresh doubts among investors regarding future growth in the display materials segment and highlighted the risks associated with customer concentration in consumer electronics.

This demand uncertainty compounded an already cautious…