On June 3, Applied Optoelectronics declined 5.12% in regular trading, trading at $189.995/share, with trading volume of $521 million. The stock retreated after sharp gains earlier in the week, as broader communication equipment sector weakness resumed.

On the news front, AAOI continues to face pressure from its Q1 earnings miss, where the company reported an EPS loss of $0.12 that fell short of market expectations. Additionally, the company's $600 million ATM equity financing plan remains an overhang, viewed by the market as a near-term dilution risk. The optical communication sector saw broad selling on the day, with peer Lumentum declining 6.43%, Ciena down 1.44%, and Cisco falling 1.75%, reflecting persistent sector-wide headwinds that weighed on AAOI despite recent positive catalysts including its 800G optical module production approval and endorsement from investor Serenity.

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