Private company

WALL STREET SYSTEMS UK LTD

WALL STREET SYSTEMS UK LTD is a limited company registered in the United Kingdom, active since 1995.¹ It is headquartered in London, United Kingdom.¹

Last updated Oct 21, 2026.

Overview

Jul 19, 1995Founded¹

HeadquartersLondon, United Kingdom¹
Legal formPrivate Limited Company¹
LEI635400VHMKKYSOZ5A435¹
StatusActive¹
LEI statusIssued and current¹
Registered addressC/O ION, EC4R 1BE London, United Kingdom¹
Registered withCompanies House, 03081375¹

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Corporate structure

WALL STREET SYSTEMS UK LTD is part of a group headed by ION PLATFORM INVESTMENT GROUP LIMITED. 43 entities, 9 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

ION PLATFORM INVESTMENT GROUP LIMITED Dublin, Ireland
- APHELION EFX TRADING LIMITED London, United Kingdom
- BARRACUDA FX LIMITED Dublin, Ireland
- Fidessa London, United Kingdom
- FIDESSA BUY-SIDE INC. Wilmington, Delaware, United States
- FIDESSA BUY-SIDE LIMITED London, United Kingdom
- FIDESSA CORPORATION Wilmington, Delaware, United States
- FIDESSA TRADING UK LIMITED London, United Kingdom
- I-LOGIC TECHNOLOGIES BIDCO LIMITED London, United Kingdom
  - ACURIS RISK INTELLIGENCE LIMITED London, United Kingdom
  - Dealogic London, United Kingdom
    - BACKSTOP SOLUTIONS GROUP, LLC Wilmington, Delaware, United States
    - DEALOGIC SUPPORT SERVICES INDIA PRIVATE LIMITED Mumbai, India
  - DEALOGIC, L.L.C. Wilmington, Delaware, United States
  - MERGERMARKET LIMITED London, United Kingdom
  - ACURIS BIDCO LIMITED Subsidiary · London, United Kingdom
  - ACURIS FINANCE S.À R.L. Subsidiary · Luxembourg, Luxembourg
  - ACURIS FINANCE US, INC Subsidiary · New York, New York, United States
  - DEALOGIC (HOLDINGS) LIMITED Subsidiary · London, United Kingdom
- ION CORPORATES INVESTMENT GROUP LIMITED Dublin, Ireland
  - Allegro Development Corporation Wilmington, Delaware, United States
  - ASPECT ENTERPRISE SOLUTIONS LIMITED London, United Kingdom
  - OPENLINK FINANCIAL LLC New York, New York, United States
  - WALL STREET SYSTEMS UK LTD London, United Kingdom
  - HELIOS SOFTWARE HOLDINGS, INC. Subsidiary · Wilmington, Delaware, United States
  - ION CORPORATE SOLUTIONS FINANCE S.À R.L. Subsidiary · Luxembourg, Luxembourg
  - ION PLATFORM FINANCE US, INC. Subsidiary · New York, New York, United States
- ION TRADING INDIA PRIVATE LIMITED Noida, India
- ION TRADING IRELAND LIMITED Dublin, Ireland
- ION TRADING TECHNOLOGIES LIMITED Dublin, Ireland
  - LIST INC. Toronto, Ontario, Canada
- ION TRADING TECHNOLOGIES S.À R.L. Dublin, Ireland
  - DASH FINANCIAL TECHNOLOGIES LLC Chicago, Illinois, United States
- List Pisa, Italy
  - LIST UK LIMITED London, United Kingdom
- LIST TECHNOLOGY IBERICA SA Madrid, Spain
- MARKETFACTORY, INC. New York, New York, United States
- Reval Austria GmbH Graz, Austria
- Triple Point Technology, LLC Wilmington, Delaware, United States
- ION CAPITAL UK LIMITED Subsidiary · London, United Kingdom
- ION Platform Finance S.a r.l. (ION Platform Finance S.à r.l.) Subsidiary · Luxembourg, Luxembourg
- ION TRADING FINANCE LIMITED Subsidiary · Dublin, Ireland
- LAB49 CONSULTING LIMITED Subsidiary · Dublin, Ireland

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company (GLEIF)

ION CORPORATES INVESTMENT GROUP LIMITED¹

Ultimate parent

ION PLATFORM INVESTMENT GROUP LIMITED¹

Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

Jul 22, 2026Parent Directly consolidated by ION CORPORATES INVESTMENT GROUP LIMITED¹
Jul 19, 1995Founded WALL STREET SYSTEMS UK LTD is founded¹

Sources

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

1
GLEIFWALL STREET SYSTEMS UK LTD LEI record (635400VHMKKYSOZ5A435)