Global Technology and Big Wave Robotics surged in their KOSDAQ trading debuts on the 29th, reaching 28,350 won and 55,400 won, respectively, at 9:23 a.m. Global Technology rose 183.5% from its 10,000-won IPO price, while Big Wave Robotics gained 207.8% from 18,000 won. Global Technology, a fabless system semiconductor company, reported first-half revenue of 28.8 billion won, up about 88% year on year, and operating profit of 1.16 billion won after recording a loss a year earlier. Big Wave Robotics operates the Marosol robot automation platform and Sollink integrated control platform. Four companies are due to list on KOSDAQ this week, including Duksan Neolux Core on the 30th and Brills on Oct. 1.