Chairpersons of the nation's top ten business groups saw their net share value plunge by a total of W160 billion in the three-day period, following terrorist attacks on the United States. The amount represented a 13.4% drop in the market capitalization of the ten group owners.

According to the Korea Stock Exchange Monday, Chung Mong-koo, chair of Hyundai Motor group, took the heaviest hit with a W63.7 billion plunge in his share value between Tuesday, prior to the attack, and Friday last week. Chung’s total share ownership stood at W186.4 billion as of the end of last year, but the total value of his own shares spiraled up to nearly W400 billion in June. Cho Joong-hun of Hanjin group suffered from the deepest rate with a 21.3% plunge in his share holdings.

(Park Nae-sun, nsun@chosun.com )