TOPIX's first liquidity-based periodic review takes effect, adding 35 stocks and starting a two-year weight cut for 683 others
The first periodic review under TOPIX's second stage of revisions takes effect on 30 October 2026. JPX Market Innovation & Research (JPXI) is adding 35 issues and has designated 683 for transitional measures, which cut their weights in eight quarterly steps to July 2028. JPXI also starts calculating TOPIX Next-tier, a new index of liquid stocks that are not selected for TOPIX.