About a-team Marketing Services
The knowledge platform for the financial technology industry
The knowledge platform for the financial technology industry

A-Team Insight Blogs

Fidessa BlockShadow Solves MiFID II Block Trading Problem

Subscribe to our newsletter

Fidessa has worked with long-standing client Redburn to deliver BlockShadow, a service driven by Markets in Financial Instruments Directive II (MiFID II) and designed to provide intelligent access across conditional dark venues for best execution of large orders.

BlockShadow manages the whole process of placing multiple conditional orders on these venues, while at the same time sending slices to regular markets. When there is a match on a conditional venue, BlockShadow pauses the second ‘worker’ algo, waits for volume to be released, and then firms up on the venue concerned. This ensures the best execution outcome with zero over-fill risk.

Will Winzor-Saile, execution architect at Redburn, says: “We have always worked closely with Fidessa. The BlockShadow capability is an exciting addition to our technology stack. BlockShadow not only allows us to provide access to a broader spectrum of liquidity, but also means we are able to post the same block volume on multiple venues simultaneously. Since going live with BlockShadow, the additional volume from Turquoise, Cboe and Euronext has meant larger fill sizes, reduced market impact and better performance across all our trading.”

Robert Barnes, CEO at Turquoise, adds: “Products like Fidessa’s BlockShadow are able to manage conditional messages while working algo orders. This means Fidessa clients can access services like Turquoise Plato Block Discovery for Large in Scale (LIS) business while working firm orders below LIS on innovations like Turquoise Lit Auctions to achieve the best result on a continuous basis, the very definition of best execution.”

James Blackburn, global head of equities product marketing at Fidessa, concludes: “Competition for execution business is fierce. One of the biggest challenges for brokers in the post-MiFID II world is demonstrating their relevance, whether that is in research or in execution. BlockShadow, together with our liquidity partnership with Virtu, are just some of the ways in which we’re enabling our customers to demonstrate a clear advantage.”

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Enhancing trader efficiency with interoperability – Innovative solutions for automated and streamlined trader desktop and workflows

Traders today are expected to navigate increasingly complex markets using workflows that often lag behind the pace of change. Disconnected systems, manual processes, and fragmented user experiences create hidden inefficiencies that directly impact performance and risk management. Firms that can streamline and modernise the trader desktop are gaining a tangible edge – both in speed...

BLOG

Symphony Secures Prestigious A-Team Award for AI Innovation in Trader Workflow

Symphony, the communications and markets technology company, has been awarded ‘Best AI-Enabled App for Trader Workflow Management’ at the 2025 AI in Capital Markets Awards. This accolade recognises Symphony’s innovative application of artificial intelligence to streamline and enhance the complex daily workflows of traders. The AI in Capital Markets Awards celebrate the pioneering advancements and...

EVENT

Eagle Alpha Alternative Data Conference, hosted by A-Team Group

Now in its 8th year, the Eagle Alpha Alternative Data Conference managed by A-Team Group, is the premier content forum and networking event for investment firms and hedge funds.

GUIDE

The DORA Implementation Playbook: A Practitioner’s Guide to Demonstrating Resilience Beyond the Deadline

The Digital Operational Resilience Act (DORA) has fundamentally reshaped the European Union’s financial regulatory landscape, with its full application beginning on January 17, 2025. This regulation goes beyond traditional risk management, explicitly acknowledging that digital incidents can threaten the stability of the entire financial system. As the deadline has passed, the focus is now shifting...