On 7 October 2026, JPX Market Innovation & Research announced the first periodic review of TOPIX. The 35 newly added constituents include Astroscale Holdings, which provides in-orbit services, and Synspective, which develops and operates small SAR satellites.
JPX Market Innovation & Research, a subsidiary of Japan Exchange Group, announced the selection results for the first periodic review of the Tokyo Stock Price Index, TOPIX. With this rebalancing, TOPIX's coverage, which had previously focused mainly on Prime Market constituents, will expand to include the Standard and Growth markets, with 2 space-related companies newly added.
A total of 35 constituents will be added. Astroscale Holdings is a space company that provides in-orbit services, while Synspective develops and operates small SAR satellites. The rebalancing is scheduled for 30 October, and the list of constituents after the rebalancing will be included in the published PDF.
TOPIX is a leading index for the Japanese equity market and is used as a benchmark for investment trusts and pension fund management. As a result, 2 space-sector startups will be included in a market index, drawing attention to their future developments.