8 December 2005 was a very special day for J-Com Co., Ltd. (“J-Com”), because this was the day the company would be listed on the Tokyo Stock Exchange (“TSE”). However, if a sell order for more than 40 times the company was placed in circulation owned shares of Mizuho Securities (“Mizuho Sec”) the exchange was put in turmoil. Before the end of the day, Mizuho Sec suffered losses of at least 27 billion after an input to the sale of a share for 610,000 that was mistakenly entered as 610 … Read more »

8 December 2005 was a very special day for J-Com Co., Ltd. (“J-Com”), because this was the day the company would be listed on the Tokyo Stock Exchange (“TSE”). However, if a sell order for more than 40 times the company was placed in circulation owned shares of Mizuho Securities (“Mizuho Sec”) the exchange was put in turmoil. Before the end of the day, Mizuho Sec suffered losses of at least 27 billion after an input to the sale of a share for 610,000 that was mistakenly entered as 610,000 shares for each first What steps should J-Com President, Okamoto, Yasuhiko, to take in light of the events? How should the TSE, Mizuho sec and other brokers react? The real core of this case management decisions and the value of good leadership, when something unexpected happens.
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Mitsuru Misawa
Source: University of Hong Kong
13 pages.
Release Date: 5th June 2008. Prod #: HKU745-PDF-ENG
J-COM: Share Trade irregularities on the Day of IPO HBR case solution

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