Applied Optoelectronics is trading 4.72% lower at $99.02 as technology shares weaken amid rising Treasury yields and renewed inflation concerns. - The September 24, 2026 decline had no identified fresh company-specific announcement. - Reuters reported the 10-year Treasury yield reached 5.106%, its highest level since 2007, after stronger business-activity data intensified rate-hike concerns. - The Nasdaq Composite fell 0.59%; the S&P 500 and Dow Jones Industrial Average were also lower, while AI-optics stocks saw profit-taking.