A 10-year-old boy who owns a staggering 15.5 billion won (US$15 million) was among South Korea's stock-rich kids whose number was at its highest as conglomerate owners and their relatives gave away stocks as gifts to their children, data showed Friday. The data compiled by market research firm Chaebul.com showed there were 126 children aged 12 or below who held shares worth at least 100 million won at the end of April, up from 118 a year ago. The figure marks the highest-ever on record, the data showed.