Although the change is a technicality, it had a significant effect on the weighting of many companies in the index, because many companies in Japan have significant holdings of shares of their business partners as a part of intricate business alliances, and such shares are no longer included in calculating the weight of companies in the index.
Tiltrods for at forandringen var teknisk så havde den væsentlig indflydelse på mange virksomheders vægtning, fordi mange mange virksomheder i Japan har betydelige aktieposter i deres forretningspartneres selskaber og disse aktier indgår ikke længere i udregningerne af aktieindekset.