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

Leading Platforms and Frameworks to Support Trading Application Development

Building trading systems has never been more complex or more critical to competitive differentiation, as firms across the buy side and sell side – as well as exchanges and trading venues – face immense pressure from infrastructure demands, market volatility, and regulatory scrutiny. In response, the ability to build and adapt trading applications quickly has...

EVENT

RegTech Summit London

Now in its 9th year, the RegTech Summit in London will bring together the RegTech ecosystem to explore how the European capital markets financial industry can leverage technology to drive innovation, cut costs and support regulatory change.

GUIDE

Regulatory Data Handbook 2025 – Thirteenth Edition

Welcome to the thirteenth edition of A-Team Group’s Regulatory Data Handbook, a unique and practical guide to capital markets regulation, regulatory change, and the data and data management requirements of compliance across Europe, the UK, US and Asia-Pacific. This year’s edition lands at a moment of accelerating regulatory divergence and intensifying data focused supervision. Inside,...