Keiretsu - Nature of The Keiretsu - in Japan

In Japan

During the occupation of Japan, under the Supreme Commander of the Allied Powers, General Douglas MacArthur, a partially successful attempt was made to dissolve the zaibatsu in the late 1940s. Sixteen zaibatsu were targeted for complete dissolution, and 26 more for reorganization after dissolution. However, the companies formed from the dismantling of the zaibatsu were later reintegrated. The dispersed corporations were reinterlinked through share purchases to form horizontally integrated alliances across many industries. Where possible, keiretsu companies would also supply one another, making the alliances vertically integrated, as well. In this period, official government policy promoted the creation of robust trade corporations that could withstand heavy pressures from intensified trade competition.

The major keiretsu were each centered around one bank, which lent money to the keiretsu member companies and held equity positions in the companies. Each bank had great control over the companies in the keiretsu and acted as a monitoring and emergency bail-out entity. One effect of this structure was to minimize the presence of hostile takeovers in Japan, because no entities could challenge the power of the banks.

Although the divisions between them have blurred in recent years, there have been nine major postwar keiretsu:

Toyota is considered the biggest of the vertically integrated keiretsu groups. The banks at the top are not as large as normally required, so it is actually considered to be more horizontally integrated than other keiretsu.

The Japanese recession in the 1990s had profound effects on the keiretsu. Many of the largest banks were hit hard by bad loan portfolios and forced to merge or go out of business. This had the effect of blurring the lines between the individual keiretsu: Sumitomo Bank and Mitsui Bank, for instance, became Sumitomo Mitsui Banking Corporation in 2001, while Sanwa Bank (the banker for the Hankyu-Toho Group) became part of Bank of Tokyo-Mitsubishi UFJ.

Generally, these causes gave rise to a strong notion in the business community that the old keiretsu system was not an effective business model, and led to an overall loosening of keiretsu alliances. While they still exist, they are not as centralized or integrated as they were before the 1990s. This, in turn, has led to a growing corporate acquisition industry in Japan, as companies are no longer able to be easily "bailed out" by their banks, as well as rising derivative litigation by more independent shareholders.