AXT Inc's stock plummeted 9.61% during Monday's intraday trading session. The sharp decline reflects a combination of specific company developments and broader sector sentiment.

Recent insider selling by company executives and directors, coupled with a cautious analyst stance regarding the firm's near-term prospects, triggered significant profit-taking pressure. Market participants are also de-risking their positions ahead of the company's scheduled first-quarter earnings report, anticipating potential volatility around the release.

The selling pressure was amplified by a broader downturn in the semiconductor equipment sector, with several major industry peers also trading lower during the session.