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Private company

Fidessa

Logo: Fidessa Annual Report 2010, Non-free logo, via Wikipedia4

British financial services company

Fidessa group Holdings Ltd (formerly Fidessa Group Plc), is a British-headquartered company which provides financial markets software and services, such as trading and investment management systems, analytics and market data, to buy side and sell side clients in the financial services sector. It was listed on the London Stock Exchange and was a member of the FTSE 250 Index before it was acquired by ION Investment Group, which also owns financial content provider Dealogic and financial media group Acuris.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1981Founded1
  • Industrysoftware industry1
  • HeadquartersLondon1
  • Websitewww.fidessa.com
  • Legal formpublic limited company1
  • Listed onLondon Stock Exchange1
  • LEI213800691ANM6EZWOH753
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressC/O ION, EC4R 1BE London, United Kingdom3
  • Registered withCompanies House, 032341763

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Fidessa group Holdings Ltd (formerly Fidessa Group Plc), is a British-headquartered company which provides financial markets software and services, such as trading and investment management systems, analytics and market data, to buy side and sell side clients in the financial services sector.2

Corporate structure

Fidessa 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.

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

The story

The company was founded in 1981 as Intercom Data Systems (IDS) and was later renamed Royalblue Group plc, which consisted of two separate operating divisions, Royalblue Financial and Royalblue Technologies. With the group's core trading platform, Fidessa, being better known in the market place, the Royalblue Group plc changed its name to Fidessa Group plc following shareholder approval at the AGM held in April 2007. In November 2008, Fidessa launched its Fidessa Fragmentation Index. In April 2011, Fidessa launched the Tradalyzer that provides detailed trading analysis.

On 20 February 2018, it was announced that Temenos Group was in advanced talks to purchase Fidessa. The following day, Fidessa's board recommended that shareholders accept an offer of £35.67 per share to purchase the company, valuing it at £1.4 billion. This offer was later beaten in April 2018, by ION Investment Group who offered £39.50 per share, valuing the company at £1.5 billion.

From Wikipedia’s article on Fidessa, shared under CC BY-SA 4.0.5

Products and brands

Market penetration

As of early 2009, around 70% of all securities transactions in London were reportedly handled by Fidessa systems.

Products

In addition to a trading platform, Fidessa hosts a broker neutral FIX-enabled execution network. This has a large number of brokers connected to it and is similar to other inhouse FIX networks, such as the LSE Hub, the SunGard Transaction Network (STN) and Thomson Reuters subsidiary TradeWeb's Autex Trade Route.

From Wikipedia’s article on Fidessa, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Owners

Parent company (GLEIF)

From Wikidata.1 Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

  1. Jun 8, 2016Parent Directly consolidated by ION PLATFORM INVESTMENT GROUP LIMITED3
  2. 1981Founded Founded1

Sources

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

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