Applied Optoelectronics (AAOI) shares surged 7.01% during pre-market trading on Tuesday, extending a rally that saw the stock gain over 9% in the prior regular session. The sharp move higher pushed the stock to an active pre-market session, reflecting heightened investor enthusiasm ahead of the company's upcoming quarterly report.

The bullish momentum is largely driven by strong earnings expectations. Applied Optoelectronics is scheduled to report quarterly results after the market close on August 6, with consensus estimates projecting revenue of approximately $190 million—an 80.03% year-over-year jump—and adjusted earnings per share of $0.02, a 120.22% increase from the prior year. Analyst sentiment remains favorable, with buy and strong buy ratings making up roughly 57.14% of coverage.

Broader sector tailwinds also contributed to the gains. Corning's CEO recently noted that optical communication product demand remains robust, forecasting per-GPU fiber demand to grow 1.3 to 1.5 times by 2028. This optimistic outlook lifted the entire optical communications space, with peer Lumentum rising approximately 5% in the same session, underscoring the strength across the industry.