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Concept

The suspension of Regulatory Technical Standard 27 (RTS 27) reporting obligations under MiFID II represents a significant recalibration of the European Union’s market transparency framework. Initially conceived as a cornerstone of best execution, RTS 27 mandated that execution venues, such as stock exchanges and multilateral trading facilities, publish detailed quarterly reports on execution quality. These reports were designed to provide a standardized data set covering price, cost, speed, and likelihood of execution for every financial instrument traded. The underlying principle was to arm investment firms with the empirical data needed to compare venue performance and substantiate their execution choices, thereby fulfilling their fiduciary duty to act in their clients’ best interests.

However, the operational reality of RTS 27 diverged sharply from its theoretical purpose. The European Securities and Markets Authority (ESMA) and national competent authorities (NCAs) observed that the reports were immensely burdensome for venues to produce and were seldom used by investment firms. The sheer volume and complexity of the data, coupled with inconsistencies in formatting and reporting logic across venues, rendered meaningful, comparative analysis impractical.

Consequently, the reports failed to achieve their primary objective of enabling investors to make informed decisions based on execution quality. This led to a consensus that the protocol was flawed, generating high costs for the industry with little discernible benefit to the end investor.

The suspension of RTS 27 was a direct acknowledgment that the mandated data protocol failed to deliver actionable intelligence for best execution analysis.
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The Systemic Flaw in the Original Mandate

From a systems perspective, the failure of RTS 27 can be attributed to a miscalculation of the relationship between raw data and actionable intelligence. The mandate operated on the assumption that forcing the public disclosure of vast, granular data sets would automatically lead to greater transparency and better-informed decisions. This overlooked the critical intermediate step of data processing, normalization, and contextual analysis, which is resource-intensive and requires specialized capabilities. For most investment firms, the raw, unrefined data from RTS 27 reports was more noise than signal, making it difficult to integrate into their existing best execution monitoring frameworks.

The suspension, enacted as part of the MiFID II “Quick Fix” package, was therefore a pragmatic response to these systemic shortcomings. It removed a costly and ineffective obligation, but in doing so, it created a data vacuum. Without the standardized (albeit flawed) data from RTS 27, the burden of proof for best execution now rests more heavily on the investment firms themselves. They must construct a robust monitoring process using a mosaic of alternative data sources, a challenge that requires a fundamental shift in strategy and operational capability.


Strategy

The removal of the RTS 27 reporting requirement necessitates a strategic pivot for investment firms in the EU. The previous compliance-centric model, which could theoretically rely on a standardized public data source, is obsolete. A new framework is required, one that is proactive, multi-faceted, and grounded in the sophisticated use of alternative data sources to build a defensible best execution narrative. This shift moves the process from a perfunctory “box-ticking” exercise to a core component of a firm’s competitive and operational strategy.

Firms must now architect a data acquisition and analysis strategy that compensates for the absence of venue-supplied RTS 27 reports. This involves a greater reliance on a combination of internal data, reports from their brokers, and third-party data providers. The importance of RTS 28 reports ▴ the annual disclosures from investment firms detailing their top five execution venues for each asset class ▴ has grown.

While RTS 28 provides insight into a firm’s own routing practices, it lacks the granular, instrument-level detail that RTS 27 was intended to provide. Therefore, it is only one piece of a much larger puzzle.

With the disappearance of a standardized public data set, firms must now become adept integrators of diverse and fragmented information to prove best execution.
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Constructing a New Data Framework

The modern best execution strategy is defined by a firm’s ability to source, aggregate, and analyze data from disparate channels. The core challenge is to create a coherent and consistent picture of execution quality in a world of non-standardized information. This requires a clear methodology for evaluating and integrating different data types.

  • Internal Execution Data ▴ This is the firm’s own record of its trades. Analysis of this data through a Transaction Cost Analysis (TCA) system provides the most direct view of performance but lacks the context of how the broader market was behaving.
  • RTS 28 Reports ▴ These reports offer a high-level summary of where a firm directs its order flow. Their primary utility is for internal governance and for clients to understand a firm’s venue selection policies, rather than for granular, trade-by-trade analysis.
  • Broker-Supplied Data ▴ Many brokers provide their institutional clients with detailed execution reports. While valuable, this data is naturally biased towards the broker providing it and requires careful, independent verification.
  • Third-Party Market Data Vendors ▴ A growing ecosystem of specialized vendors now offers aggregated market data, TCA services, and best execution analytics. These providers have become critical partners for firms seeking to build a comprehensive and objective monitoring system.
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Comparative Analysis of Data Sources

Choosing the right blend of data sources is a critical strategic decision. Each source has distinct characteristics in terms of granularity, cost, and objectivity. The following table provides a framework for evaluating these sources.

Data Source Granularity Objectivity Strategic Utility
Internal TCA High (per-trade) High (internal view) Core performance measurement; lacks market context.
RTS 28 Reports Low (aggregated, annual) High (for own firm) High-level disclosure and governance.
Broker Reports Medium to High Low (inherent bias) Useful for broker evaluation but requires independent validation.
Third-Party Data Vendors High (market-wide) High (independent) Provides essential market context for benchmarking and venue comparison.


Execution

In the post-RTS 27 environment, executing a best execution monitoring framework is an exercise in disciplined data management and rigorous internal governance. The focus shifts from processing standardized public reports to actively building a proprietary, evidence-based system. This requires a clear operational plan that covers data sourcing, analytical methodology, and the governance structure for oversight and review.

The first operational step is to formalize the firm’s best execution policy to reflect the new data reality. This policy must explicitly state how the firm will obtain and use data to monitor the effectiveness of its execution arrangements. It should detail the qualitative and quantitative factors that the firm considers, moving beyond simple price analysis to include a broader assessment of costs, speed, and likelihood of execution derived from the new blend of data sources. A critical component of this is establishing a formal process for selecting and overseeing third-party data and TCA providers.

Effective execution monitoring now hinges on a firm’s ability to build and manage a robust, multi-layered data analysis system.
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Operationalizing the Monitoring Process

A robust operational workflow is essential for translating strategic goals into demonstrable compliance. This process can be broken down into several key stages, each with its own set of procedures and controls.

  1. Data Aggregation ▴ The firm must implement technology and processes to collect and consolidate execution data from all relevant sources, including its own order management system (OMS), broker reports, and feeds from market data vendors. This data must be normalized into a consistent format to allow for meaningful analysis.
  2. Transaction Cost Analysis (TCA) ▴ The aggregated data should be subjected to rigorous TCA. This involves benchmarking execution prices against relevant market benchmarks (e.g. VWAP, TWAP, arrival price) to quantify execution performance. The analysis should be conducted across different asset classes, venues, and brokers.
  3. Qualitative Factor Assessment ▴ Best execution is not solely about price. The firm must have a documented process for assessing qualitative factors, such as the quality of clearing and settlement, counterparty risk, and the speed and likelihood of execution. This often involves a combination of quantitative data and qualitative judgment.
  4. Governance and Oversight ▴ The findings of the analysis must be regularly reviewed by a dedicated committee, often a Best Execution Committee. This committee is responsible for reviewing performance, challenging poor outcomes, and making decisions about changes to the firm’s execution arrangements, such as adding or removing a broker or venue from its approved list.
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Vendor Evaluation Framework

The selection of a third-party data or TCA provider is a critical execution step. A structured evaluation process ensures the chosen partner has the technical capabilities and market coverage required to support the firm’s best execution policy. The following table outlines key criteria for this evaluation.

Evaluation Criterion Description Key Considerations
Asset Class Coverage The range of financial instruments for which the vendor provides data. Does the vendor cover all asset classes traded by the firm, including equities, fixed income, and derivatives?
Data Quality and Granularity The accuracy, completeness, and level of detail of the market data. Does the vendor provide access to deep, tick-level data? What are their data cleansing and validation processes?
Analytical Capabilities The sophistication of the vendor’s TCA tools and reporting suite. Can the system be customized to the firm’s specific benchmarks and reporting needs? Does it support pre-trade and post-trade analysis?
Independence and Objectivity The vendor’s freedom from conflicts of interest. Is the vendor independent of any brokers or trading venues? How do they ensure their analysis is objective?

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References

  • European Securities and Markets Authority. “ESMA promotes coordinated action on the suspension of best execution reports.” ESMA, 16 February 2021.
  • Foo, Amanda. “Mifid II ▴ firms concerned about revamped best execution reporting.” International Financial Law Review, 26 January 2022.
  • Storey, Matt. “Changes to MiFID II’s Best Execution RTS27/28 Obligations.” SteelEye, 20 January 2022.
  • Malta Financial Services Authority. “The European Securities and Markets Authority (“ESMA”) issues a Public Statement regarding the Best Execution Reporting Obligation by Venues.” MFSA, 21 December 2022.
  • European Securities and Markets Authority. “ESMA promotes clarity to market participants on best execution reporting.” ESMA, 14 December 2022.
  • Financial Conduct Authority. “FCA announces decision on MiFID II RTS 27 reports.” FCA, 2021.
  • European Commission. “Commission Delegated Regulation (EU) 2017/575 of 8 June 2016 supplementing Directive 2014/65/EU of the European Parliament and of the Council on markets in financial instruments with regard to regulatory technical standards for the data to be published by execution venues on the quality of execution of transactions.” Official Journal of the European Union, 2017.
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Reflection

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From Mandated Reports to Systemic Intelligence

The departure from the RTS 27 framework marks a pivotal moment in the evolution of best execution. It closes the chapter on a top-down, compliance-driven approach and opens a new one centered on firm-level responsibility and analytical sophistication. The absence of a universal reporting standard compels a move toward a more intelligent, adaptable monitoring system. This system is one that is built, not just adopted.

This new paradigm requires viewing best execution not as a regulatory burden to be cleared, but as a source of competitive intelligence. The processes and data architectures firms build to satisfy their obligations can yield profound insights into market dynamics, broker performance, and algorithmic efficiency. The challenge, therefore, is also an opportunity ▴ to transform the function of best execution monitoring from a retrospective compliance check into a forward-looking source of strategic advantage. The ultimate quality of a firm’s execution now depends directly on the quality of the intelligence system it chooses to construct.

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Glossary

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Market Transparency

Meaning ▴ Market Transparency refers to the degree to which real-time and historical information regarding trading interest, prices, and volumes is disseminated and accessible to all market participants.
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Execution Quality

Meaning ▴ Execution Quality quantifies the efficacy of an order's fill, assessing how closely the achieved trade price aligns with the prevailing market price at submission, alongside consideration for speed, cost, and market impact.
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European Securities

T+1 compresses the securities lending lifecycle, demanding a systemic shift to automated, real-time operational architectures.
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Markets Authority

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Best Execution Monitoring

Meaning ▴ Best Execution Monitoring constitutes a systematic process for evaluating trade execution quality against pre-defined benchmarks and regulatory mandates.
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Investment Firms

The SI regime imposes significant operational burdens on investment firms, requiring substantial investment in technology, data management, and compliance.
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Best Execution

Meaning ▴ Best Execution is the obligation to obtain the most favorable terms reasonably available for a client's order.
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Data Sources

Meaning ▴ Data Sources represent the foundational informational streams that feed an institutional digital asset derivatives trading and risk management ecosystem.
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Rts 27

Meaning ▴ RTS 27 mandates that investment firms and market operators publish detailed data on the quality of execution of transactions on their venues.
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Rts 28

Meaning ▴ RTS 28 refers to Regulatory Technical Standard 28 under MiFID II, which mandates investment firms and market operators to publish annual reports on the quality of execution of transactions on trading venues and for financial instruments.
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Transaction Cost Analysis

Meaning ▴ Transaction Cost Analysis (TCA) is the quantitative methodology for assessing the explicit and implicit costs incurred during the execution of financial trades.
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Market Data

Meaning ▴ Market Data comprises the real-time or historical pricing and trading information for financial instruments, encompassing bid and ask quotes, last trade prices, cumulative volume, and order book depth.
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Execution Monitoring

Monitoring RFQ leakage involves profiling trusted counterparties' behavior, while lit market monitoring means detecting anonymous predatory patterns in public data.