FOURSEMI soared 105% in Hong Kong’s grey market trading.
Shanghai FourSemi Semiconductor specializes in power amplifier audio chips and haptic feedback chips. Operating under a fabless model, its products are widely used in smartphones, tablets, smart wearables, and smart vehicles. According to Frost & Sullivan, based on total shipments in 2024, FourSemi ranks third globally in power amplifier audio chips and second in China; for power amplifier audio chips used in smart displays, it ranks first in China.