SG Micro Corp (03661) commenced trading on its first day, opening significantly higher. The company set its issue price at HK$85.2 per share, offering a total of 54.0012 million shares in lots of 100. The net proceeds from the offering are approximately HK$4.5 billion. At the time of writing, the stock was up 23.36%, trading at HK$105.1 with a turnover of HK$553 million.

The listing documents indicate that SG Micro Corp is a leading Chinese analog integrated circuit (IC) company. The firm designs, develops, and sells analog ICs and sensors with functions such as sensing, amplification, conversion, and driving, which serve as fundamental building blocks for all electronic systems.

According to data from Frost & Sullivan, based on 2025 revenue, the company ranks first among domestic firms in China's analog IC market and eighth globally, holding a market share of 1.8%. Since its establishment in 2007, the company has continuously developed and expanded a comprehensive product portfolio, pushing the boundaries of electronic technology.

As of the latest practicable date, the company possesses over 7,200 analog and sensor products across 38 product categories. Leveraging robust design and process capabilities, it provides system-level solutions to accelerate product time-to-market.