Preparing the Back Office for the EU's Market Data Regime
For most of the past decade the price of European market data was governed by a principle nobody could enforce. MiFID II required trading venues to make data available on a reasonable commercial basis, the phrase carried no operational definition, and successive rounds of guidelines never closed the gap between what users paid and what they believed the data cost to produce. The MiFIR Review ended the experiment. Commission Delegated Regulation (EU) 2025/1156 entered into force on November 23, 2025, and the regime applies to providers authorized before that date from August 23, 2026.
Industry attention has fixed on the pricing question, and for operations leaders that is the wrong question. The answer sits largely outside their control, and the durable impact lands elsewhere. RCB rewrites the machinery behind the invoice: the contracts under which data is licensed, the entitlement systems that count users, the declarations that replace audits as the compliance mechanism, and the invoice controls the back office can now run against a published cost benchmark.
Exposure differs sharply by seat. Broker-dealers face the regime twice, as consumers of exchange data and, where they operate systematic internalisers, as regulated providers of it. Investment managers face a re-papering and inventory exercise across every venue relationship. Custodian banks must reconcile their own consumption with what they redistribute to clients, and wealth platforms inherit that problem at retail scale. The full report maps the work article by article.
Selected Conclusions
• RCB is an operations regime wearing a pricing label. The durable impact of Delegated Regulation 2025/1156 lands on contracts, entitlements, declarations and invoice controls rather than on the rate card, and the work must be done by August 23, 2026.
• The unit of count is the longest system tail. Standardized counting converts entitlement accuracy from an internal hygiene metric into the direct driver of spend, and over-declaration becomes a failure mode the old audit model never punished.
• Invoices can now be wrong in demonstrable ways. Published schedules, methodology and categories make a rules-based validation control possible, and the same control will surface the firm's own under-declarations.
Subscribers to the Journal may download the full report, including 8 Conclusions and 19 Recommendations and Action Items.
