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BackTOPIX再編1634→986社へ　マックやワークマンなど追加
TOPIX再編1634→986社へ　マックやワークマンなど追加
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朝日新聞2 hours agoBusiness1 min readJapanView translation

TOPIX再編1634→986社へ　マックやワークマンなど追加

市場再編の一環として10月末から段階的に実施、2028年10月以降は毎年定期入れ替えへ

日本取引所グループJPXTOPIX

Quick Look

日本取引所グループ（JPX）は7日、東証株価指数（TOPIX）の構成銘柄を現行の1634社から986社へ大幅に入れ替えると発表した。市場再編の一環で、10月末から2028年7月まで段階的に実施する。

AI-generated summary

Why It Matters

TOPIXは1969年に旧東証1部上場企業すべての値動きを反映する指数としてつくられた。

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日本取引所グループ（JPX）は7日、日本の代表的な株価指数である東証株価指数（TOPIX）の構成銘柄を、大幅に入れ替えると発表した。銘柄数は現行の1634社から986社となり、1千社を割り込む。東京証券取引所の市場再編の一環で、10月末から2028年7月まで段階的に実施し、28年10月以降は毎年定期的に銘柄を入れ替える。

株価指数は、さまざまな企業の株が取引される株式市場全体やある銘柄群の値動きを、一定の計算法に基づき一目で分かるようにしたもの。TOPIXの他、日経平均株価や米ダウ工業株平均、S＆P500なども有名だ。

TOPIXは1969年に旧東証1部上場企業すべての値動きを反映する指数としてつくられた。対象銘柄の時価総額（株価×株式数）をもとに算出され、1968年を100とし、上昇や下落はポイントで表す。

ただ、これまで定期的な銘柄…

What to Watch

AI outlook — possibilities, not facts

  • 10月末から2028年7月まで段階的に銘柄入れ替えを実施

    Very likely · Within months

Open Questions

  • 除外される銘柄の市場への影響はどの程度か

Related Topics

日本取引所グループ
OrganizationsJPX東京証券取引所
Places日本
TopicsJPXTOPIX東証株価指数東京証券取引所市場再編株価指数
This article was originally published by 朝日新聞.

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