SEOUL, Shares of HD Hyundai Marine Solution Co., the ship repair unit of South Korea's shipbuilding giant HD Hyundai, on Wednesday closed more than 90 percent higher on their first trading day, led by optimism that its profit would rise from the parent firm's increased demand for maintenance work. On the Korea Composite Stock Price Index (KOSPI), shares of HD Hyundai Marine Solution closed at 163,900 won (US$120), up 96.5 percent from their original initial public offering (IPO) pricing of 83,400 won. Its starting price was 119,900 won. The company attracted 25 trillion won in subscription deposits during its IPO last month, a market record for this year. HD Hyundai Marine Solution said it will use the funds raised from the listing to build and upgrade logistics centers, secure warehouses at domestic and overseas ports, and acquire ship management companies. In addition, the company plans to establish a cloud management system to accelerate its transformation into a digital solution-based platform compa ny.