Applied Optoelectronics (AAOI) stock experienced a significant decline of 5.15% during intraday trading on Friday, as the market reacted to recent corporate developments.

The sharp drop followed news of insider activity at the company, with Director Cynthia DeLaney reportedly making a major move. Such insider transactions often influence investor sentiment, as they may signal how company executives view the stock's valuation and future prospects.

While the specific details of the insider transaction were not fully disclosed in the initial report, the timing of this news just before the trading session appears to have contributed to the negative market reaction against Applied Optoelectronics shares.