Market News

Dec. 18, 2019 TSE Revision of the Guidebooks for “JPX-Nikkei Index 400” and “JPX-Nikkei Mid and Small Cap Index”


The guidebooks for “JPX-Nikkei Index 400” and “JPX-Nikkei Mid and Small Cap Index”, which are jointly calculated by Tokyo Stock Exchange, Inc. and Nikkei Inc., have been revised as summarized below to clarify the definitions in the methodologies.

1. Key changes
  (1) Revised the data period used for determining qualitative scores and added a description thereof
  - Table in Ⅲ.1.(2)⑤ (For JPX-Nikkei Mid Small, table inⅢ.1.(2)⑥)
  - Ⅲ.4.(2)① and ②

  (2) Clarified criteria for exclusion from the pool of eligible constituents in the periodic review
  - Ⅲ.1.(2)②(c)
  - Ⅲ.4.(1)①

  (3) Added a description about the financial data
  - Ⅲ.4.(1)② and ③

  (4) Revised the date for adjusting base market value following the shortening of stock settlement cycle to T+2
  - Table in Ⅳ.1.(1)

  * For details, please see the attached table comparing new and old versions.

2. Revision Date
   December 18, 2019
  (The revision regarding 1.(4) above will go into effect on the date of the revision and the revisions regarding
   1.(1), (2) and (3) above will go into effect on the next periodic review in August 2020 respectively.)

Old and new comparison table icon-pdf
Methodology(JPX-Nikkei Index 400) icon-pdf
Methodology(JPX-Nikkei Mid and Small Cap Index) icon-pdf


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