Silicon photonics stock and gallium arsenide manufacturer Hanguo-KY (4991) recently had its high rate of day trading noted by regulators, leading to the release of its self-reported March revenue, which showed NT$2.41 billion. The company reported a pre-tax net profit of NT$6 million, with an earnings per share (EPS) of NT$0.05. For the first quarter, cumulative revenue reached NT$4.73 billion, marking a 36.37% year-on-year increase.

On the stock market, Hanguo-KY's share price peaked at NT$96.9 on the 25th, with an amplitude of 5.13%, closing at NT$92.4, up by 0.76%.

The rebound in profits has been attributed primarily to sustained strong demand from the AI market and a gradual recovery in the smartphone and WiFi sectors. Hanguo-KY maintains an optimistic outlook on the growth of its optoelectronic component products for the year. However, due to a high percentage of day trading taking up 73.8% of total trading volume in the last six trading days, it was flagged as a watch stock by the OTC center on the 23rd.