2331 on Tokyo Stock Exchange

ALSOK

Logo: ALSOK, Public domain, via Wikimedia Commons²

ALSOK is a Japanese private security company based in Tokyo, founded in 1965.¹ Its shares trade on Tokyo Stock Exchange under the symbol 2331.¹

Price unavailable

Last updated Oct 21, 2026.

Overview

Jul 16, 1965Founded¹

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Ticker2331 on Tokyo Stock Exchange¹
Industryprivate security company¹
HeadquartersTokyo¹
Websitewww.alsok.co.jp
Legal formkabushiki gaisha¹

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Corporate structure

ALSOK sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

ALSOK Tokyo
- Alsok Kanto Delivery Subsidiary · Tokyo, Japan

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

Alsok Kanto Delivery

From Wikidata.¹

Timeline

Oct 25, 2002Went public Listed on Tokyo Stock Exchange¹
Jul 16, 1965Founded Founded¹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataALSOK on Wikidata
2
Wikimedia CommonsALSOK logo by ALSOK, Public domain