Lee Jay-yong, vice chairman of Samsung Electronics Co. and heir apparent to its parent Samsung Group, has emerged as the fourth-richest stockholder in South Korea following last week's high-profile listing of Samsung SDS Co., data showed Sunday.

As of Friday when Samsung SDS shares went public, the value of listed shares held by Lee was tallied at 3.85 trillion won (US$3.5 billion), up two notches from the previous ranking, according to Chaebul.com, an online research firm providing information on Korean conglomerates.

The research firm periodically announces the rankings of those who own 1 trillion won worth of shares listed on the local bourse.

Lee's father -- Lee Kun-hee, the ailing chairman of Samsung Electronics -- topped the list of the 1-trillion-won stockholder club with 11.65 trillion won, followed by Suh Kyung-bae, chairman of AmorePacific Group, with 6.47 trillion won and Chung Mong-koo, chairman of Hyundai Motor Group, with 5.93 trillion won. 

Lee Jay-yong was trailed by Chung Eui-sun, vice chairman of Hyundai Motor Co., with 3.83 trillion won and SK Group chairman Chey Tae-won with 3.58 trillion won. 

Shares of Samsung SDS started trading on the country's main stock market Friday at 380,000 won, two times higher than the public offer price of 190,000 won. However, heavy profit-taking sent Samsung SDS shares falling 13.82 percent from their opening price to close at 327,500 won. (Yonhap)