Applied Optoelectronics (AAOI) shares surged 5.21% during Monday's pre-market session, driven by a favorable legal development that removed a significant regulatory overhang.

The rally was sparked by the company's announcement that a U.S. court had approved a preliminary injunction motion, shielding AAOI from adverse impacts while it challenges a designation under the so-called 1260H list. This legal victory is seen as a crucial step in safeguarding the company's U.S. operations and alleviating investor concerns over potential trade restrictions.

Additionally, market sentiment was bolstered by AAOI's ambitious growth plans disclosed during its recent earnings call, where management outlined a strategy to expand production capacity more than tenfold over the next two years. While this aggressive expansion pressured the broader CPO and communication equipment sectors on supply concerns, it underscored the company's confidence in surging demand for its optical communication products.