Corning is trading 7.8% down at $159.71 after renewed concern over Apple’s cancellation of its planned all-glass 20th-anniversary iPhone, a potential future specialty-glass opportunity.
- Investing.com cited lingering post-earnings valuation concerns and a weak technology market.
- Rising Treasury yields and U.S.-Iran tensions are pressuring growth stocks broadly.
- No new negative Corning announcement was identified on August 18, 2026.