Lee Jay-yong, vice chairman of Samsung Electronics 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, 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 , up two notches from the previous ranking, according to Chaebul.com, an online research firm providing information on Korean conglomerates.