List of ION Fidessa Customers
London, EC4R 1BE,
United Kingdom
Since 2010, our global team of researchers has been studying ION Fidessa customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased ION Fidessa for Trade Order Management System (TOMS) from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using ION Fidessa for Trade Order Management System (TOMS) include: Jefferies, a United States based Banking and Financial Services organisation with 7822 employees and revenues of $7.03 billion, Marex, a United Kingdom based Banking and Financial Services organisation with 2074 employees and revenues of $1.25 billion, Peel Hunt, a United Kingdom based Banking and Financial Services organisation with 301 employees and revenues of $114.0 million and many others.
Contact us if you need a completed and verified list of companies using ION Fidessa, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The ION Fidessa customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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Jefferies | Banking and Financial Services | 7822 | $7.0B | United States | ION Investment Group | ION Fidessa | Trade Order Management System (TOMS) | 2026 | n/a |
In 2026 Jefferies deployed ION Fidessa as a managed enterprise trading platform, adopting the solution under the Trade Order Management System (TOMS) category to centralize equity trading operations. The implementation consolidated global equity trading across Jefferies U.S. and European offices into a single combined trading view, explicitly enabling front-office equities and trading desks to access 124 exchanges through the managed platform.
ION Fidessa was configured to standardize trader screens and consolidate order lifecycle visibility, providing unified execution interfaces and a consistent trader experience across regions. Configuration work emphasized screen standardization and consolidated order books, aligning with typical Trade Order Management System (TOMS) functionality for order entry, routing visibility, and execution workflow orchestration.
The managed deployment established market connectivity to 124 exchanges and unified access for U.S. and European trading desks, creating a single operational view for cross-region trading. Operational coverage focused on front-office equities and trading, with the platform used by traders in both jurisdictions to view and manage firm-wide equity order flow.
Governance and process changes accompanied the rollout, standardizing screen layouts and execution workflows to improve cross-region consistency in trade handling. The implementation explicitly improved firm-wide visibility of equity order flow and enabled more consistent execution workflows and cross-region operations through the managed deployment of ION Fidessa.
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Marex | Banking and Financial Services | 2074 | $1.2B | United Kingdom | ION Investment Group | ION Fidessa | Trade Order Management System (TOMS) | 2021 | n/a |
In 2021, Marex implemented the ION Fidessa Equity Trading Platform to support and grow its European equities market making business. Marex adopted ION Fidessa as its Trade Order Management System (TOMS) for equities, positioning the application as the core platform for order lifecycle and execution workflows supporting market making in Europe.
The implementation focused on market making tools, RSP connectivity and integrated trading and risk capabilities. Configuration emphasized order management and execution management functions, with position and real time risk monitoring aligned to market making workflows typical of a Trade Order Management System (TOMS).
RSP connectivity is a highlighted integration point, providing direct routing and venue connectivity required for European equities market making. Operational coverage is explicitly Europe and the equities market making business, with primary business functions impacted including the trading desk, risk management and trade operations.
Governance was organized around centralized trading and risk workflows to align order handling and risk controls across Marex's European equities desks. The ION Fidessa Equity Trading Platform implementation provides the structural capability to scale Marex's European equities offering and to support growth in its market making operations.
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Peel Hunt | Banking and Financial Services | 301 | $114M | United Kingdom | ION Investment Group | ION Fidessa | Trade Order Management System (TOMS) | 2003 | n/a |
In 2003 Peel Hunt implemented ION Fidessa, a Trade Order Management System (TOMS), as its sell side equities trading platform. The deployment provided direct market access to European venues and RSP market making networks, and Peel Hunt renewed the ION Fidessa contract in 2022.
ION Fidessa implementation centers on core TOMS capabilities including order management, execution routing, market connectivity, and market making support, enabling front office workflow automation and centralized trade orchestration. Operational scope covers sell side equities in the United Kingdom, servicing retail and institutional client execution flows across European markets, with integrations focused on European market venues and RSP market making networks. Governance emphasis is on simplifying front office workflows and scaling execution services, a role explicitly highlighted in the 2022 renewal.
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Buyer Intent: Companies Evaluating ION Fidessa
- Jefferies, a United States based Banking and Financial Services organization with 7822 Employees
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