Applied Optoelectronics is trading 5.18% lower at $121.16; no verified company-specific news explained the decline. - Shares pulled back after several consecutive strong sessions, including a 7.07% rise on October 6. - Completion of the company’s $600 million at-the-market offering was reported as a catalyst for the prior session’s rally, not this morning’s decline. - Broader market indices were higher in the latest reported session.