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Other Disclosures1904TAISEI ONCHO CO.,LTD.Construction and Materials

Notice of Selection as a Constituent of the “TOPIX Next-tier” Index

The company’s shares were selected as a constituent of the “TOPIX Next-tier” stock index, newly calculated by JPX Market Innovation & Research, Inc., and were included in the index effective 30 October 2026.

Worth reading
50Recurring
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Direction
Improvement
Direction inferred from the company’s description.
Scale
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Wording
Conditional
How definitive the wording is.

Announced details

TOPIX Next-tier
Applicable field (uses covered by this announcement)

Stock indices; investable stocks

Launch date30 October 2026 (actual: index calculation start date and date the company’s shares were included)
Relationship between the counterparty and the company
TAISEI ONCHO CO.,LTD.1904
Relationship with the Company

The company’s shares were selected as a constituent of a stock index calculated by JPX Market Innovation & Research, Inc.

CounterpartyJPX Market Innovation & Research, Inc.

An institution that calculates stock indices. Other details, including location, representative, paid-in capital and year established: Not disclosed

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Source (materials cited by the company)

JPX Market Innovation & Research, Inc.

Announced details
ItemDetails
Names of Products / Services CoveredTOPIX Next-tier
CounterpartyJPX Market Innovation & Research, Inc.
Counterparty overviewAn institution that calculates stock indices. Other details, including location, representative, paid-in capital and year established: Not disclosed
Relationship with the CompanyThe company’s shares were selected as a constituent of a stock index calculated by JPX Market Innovation & Research, Inc.
Launch date30 October 2026 (actual: index calculation start date and date the company’s shares were included)
Applicable areaStock indices; investable stocks
SourceJPX Market Innovation & Research, Inc.
Items this document does not state (11)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocationLocation scaleQuantitative EffectsUsage historyImpact on Business Performance

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

The company intends to use this selection as an opportunity to bring its shares to the attention of a broad range of investors and deepen their interest in and understanding of the company. It also stated its policy of pursuing business growth and enhancing IR activities to increase corporate value.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice of Selection as a Constituent of the “TOPIX Next-tier” Index | TAISEI ONCHO CO.,LTD. (1904) timely disclosure | Komori