One Uniqlo Share for $1,000 Sparks Concern Over Nikkei Dominance

  • Fast Retailing operator increasingly influences the Nikkei 225
  • Tick size has jumped fivefold, weighting now at nearly 13%
Inside a Uniqlo store in Tokyo.Photographer: Noriko Hayashi/Bloomberg
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Shareholders are cheering the record share price of Fast Retailing Co., the operator of casual fashion giant Uniqlo that’s just become the most valuable apparel retailer in the world.

But some other market observers are sounding notes of caution over the stock’s ever-increasing influence on Japan’s Nikkei 225 Stock Average, as technical changes caused by its recent highs raise its already-outsized impact on the blue-chip gauge.