Applied Optoelectronics (AAOI) saw its stock price plummet 8.46% during intraday trading on Friday. The sharp decline represents a significant negative move for the optical networking components maker.

The sell-off was triggered by the company's disclosure that it has established an at-the-market (ATM) equity distribution program, which could allow it to issue up to $600 million worth of common stock. Such equity issuance programs typically raise concerns about potential shareholder dilution, as they increase the supply of shares in the market and reduce existing shareholders' ownership stakes.

Market participants reacted swiftly to the news, driving the stock lower as they weighed the implications of the substantial capital raising plan against the company's future growth prospects and capital needs. The negative sentiment reflects investor apprehension about dilution from the potential equity offering.