Execution Statistics Regulators Require, and Where to Find Them

The European Union's Second Markets in Financial Instruments Directive, commonly known as MiFID II, introduced a specific and often overlooked requirement for investment firms. From January 2018, these firms, including many forex and CFD brokers, became obliged to publish detailed reports on their order execution quality. This wasn't merely an administrative burden; it was an attempt to provide retail and professional clients with objective data on how their orders were handled.

Prior to MiFID II, brokers often claimed "best execution" without providing verifiable metrics. The regulatory intervention sought to standardise this disclosure, allowing clients to compare execution performance across different providers. The rationale is simple: an order placed with a broker is an instruction to deal at the best possible terms. These terms encompass not just price, but also cost, speed, and likelihood of execution.

The mandated reports, known as Regulatory Technical Standards (RTS) 27 and RTS 28, serve as the bedrock for this transparency. While primarily a European initiative, its influence extends. Brokers regulated by the Cyprus Securities and Exchange Commission (CySEC), for example, must adhere. Many global brokers with EU entities, such as Pepperstone (FCA, CySEC regulated) or XM (CySEC, ASIC regulated), publish these reports for their European operations. Other jurisdictions, such as Australia's ASIC, may not impose identical requirements, but the principle of transparent execution remains a key consideration for reputable firms.

This regulatory drive aims to alter the competitive environment from headline spreads and marketing offers towards tangible performance metrics. A broker might quote a tight spread, but if their systems consistently deliver significant negative slippage, the actual cost of trading quickly escalates. Understanding these mandated disclosures is thus essential for any trader seeking a true assessment of a broker's operational integrity.

The two primary documents for scrutinising broker execution are the RTS 27 and RTS 28 reports. Both are published by firms subject to MiFID II. RTS 27 focuses on the quality of execution for various financial instruments. It is a detailed, quantitative assessment, typically published quarterly, that breaks down execution performance by instrument class, type of order, and market conditions. This report is the more granular of the pair.

Within an RTS 27 report, you will find metrics such as the number of orders executed, the average execution price, and the spread at execution. Crucially, it details instances of price improvement – where an order is filled at a better price than initially quoted – and negative slippage, where the fill is worse. It also provides data on order rejection rates and cancellation rates, offering insight into the broker's reliability during volatile periods or high trading volumes. The sheer volume of data in these reports can be daunting, often presented in extensive spreadsheets, requiring careful analysis to derive meaningful conclusions.

RTS 28, on the other hand, deals with the identity of the top five execution venues for each instrument class. Published annually, this report informs clients where their orders are ultimately routed. For many retail forex and CFD brokers, their own internal dealing desk or a limited number of liquidity providers will constitute these "venues". While less directly indicative of execution quality than RTS 27, it provides insight into the broker's order routing policies and relationships, which indirectly affects execution outcomes. Both reports, despite their technical nature, provide a foundation for objective evaluation.

Price improvement and slippage are perhaps the most direct measures of a broker's execution efficiency. Price improvement occurs when your order is executed at a more favourable price than the one displayed or quoted at the moment you placed the order. For example, if you place a market buy order for EUR/USD at 1.08500, but it fills at 1.08495, you have received 0.5 pips of price improvement. This benefits the trader directly.

Slippage, however, refers to an execution at a price worse than the one quoted. If that same EUR/USD market buy order at 1.08500 fills at 1.08505, you've experienced 0.5 pips of negative slippage. While often unavoidable during fast-moving markets or significant news events, consistent negative slippage, especially on market orders during normal conditions, indicates a broker's difficulty in sourcing adequate liquidity or issues with their pricing engine.

RTS 27 reports categorise these occurrences, often providing percentages of orders executed with price improvement, at the quoted price, and with negative slippage. Some reports even break this down into the magnitude of the slippage. Analysing these figures over time, particularly for the instruments you trade most frequently, offers a clear picture of how much effective spread you are paying beyond the headline figure.

Beyond the price itself, the certainty of execution matters. This is where fill rates and rejection ratios provide essential insight. A "fill rate" represents the proportion of orders that are successfully executed. If you attempt 100 market orders and 98 are filled, your fill rate is 98%. The remaining 2% are rejected. These rejections can occur for various reasons: the requested price is no longer available, insufficient liquidity at that price, or technical issues with the broker's system.

A high rejection ratio, especially for market orders where immediate execution is expected, is a significant red flag. It suggests that the broker struggles to find liquidity at the advertised price, or that their internal pricing mechanisms are slow to update. This is the part most guides skip, focusing solely on spread. A consistently low spread is meaningless if your orders are frequently refused or re-quoted, forcing you to accept a worse price or miss the trade entirely.

Limit orders, by contrast, are designed to be executed only at a specified price or better. A "rejection" for a limit order typically means it expired without being triggered, or that the market never reached the specified price. This is a fundamentally different scenario from a market order rejection. The RTS 27 reports differentiate between these, providing rejection rates for different order types (market, limit, stop). A high rejection rate for market orders, particularly during periods of high volatility, points to an unreliable broker infrastructure. For instance, if you're trying to exit a volatile position and your market order is consistently rejected, the financial consequences can be severe.

Locating these regulatory disclosures often requires some persistence, as they are rarely presented prominently. Most brokers regulated under MiFID II will file these reports under sections labelled "Legal Documents," "Regulatory Information," "Disclosures," or "Best Execution Policy." It is not uncommon for the links to be buried several clicks deep, sometimes within PDF documents titled "RTS 27 Quarterly Report" or similar.

For instance, a client seeking this information from Pepperstone's UK entity (Pepperstone Limited, regulated by the FCA) would typically navigate to their main website, find the 'Legal' or 'About Us' section, and then search for 'Regulatory Reports' or 'MiFID II Disclosures'. Similarly, XM's EU entity (Trading Point of Financial Instruments Ltd, regulated by CySEC) will have similar sections. These reports are usually presented as large, often dense, Excel spreadsheets or PDF documents containing tables of raw data.

Brokers such as IC Markets and AvaTrade, both with CySEC regulated entities, also fall under this reporting obligation for their European clients. However, their entities regulated by ASIC or the FSCA, for example, may not publish identical reports, as those jurisdictions have different mandates. While some may voluntarily provide similar transparency, it is not a universally applied standard outside the EU. Always confirm the specific regulatory entity you are trading with to determine applicable reporting requirements.

While RTS 27 and 28 reports provide a statistical foundation, "best execution" is a concept with more depth than raw numbers alone convey. The aggregated data within these reports can be misleading. A broker might show favourable average price improvement figures, but these averages can obscure poor performance during specific, critical market conditions – precisely when a trader needs reliable execution most. The reports seldom provide granular detail on execution quality during high-impact news events, for example, or outside of core trading hours.

"Best execution" is not solely about achieving the tightest possible price. Regulators consider other factors: the size and nature of the order, the speed of execution, the likelihood of execution, and the total cost. A broker might offer a slightly wider spread but provide consistently fast fills with minimal slippage, which could be preferable to a broker with a tighter quoted spread but frequent re-quotes or rejections. The trade-off between these elements is subjective and dependent on an individual's trading strategy.

Comparing data across different brokers is also fraught with difficulty. The methodologies for calculating and presenting these statistics can vary, even within the regulatory framework. One broker might exclude certain order types or market conditions from their reported averages, or use different data sampling periods. This makes a direct, apple-to-apple comparison challenging. A critical approach is always needed; do not accept the headline figures without considering their context.

With the reports in hand, a practical comparison begins. Focus first on the instruments you trade most frequently. If you primarily trade EUR/USD and GBP/USD, those are the rows and columns to scrutinise. Look at the balance between price improvement and negative slippage. A broker consistently showing a higher percentage of negative slippage and a larger average slippage magnitude for your preferred assets is likely less efficient than one demonstrating more favourable outcomes.

Consider the 'average spread at execution' if reported. This figure, often wider than the advertised headline spread, accounts for the actual cost paid at the moment of the trade. Combine this with the slippage data to derive a more realistic effective cost per trade. For example, if a broker advertises a 0.8 pip spread on EUR/USD, but their RTS 27 report indicates an average of 0.4 pips negative slippage on market orders, your actual effective spread is closer to 1.2 pips.

This exercise is not about finding a perfect broker, as none exists. Instead, it is about identifying brokers that consistently perform better for your specific needs under the conditions you typically trade. Observe patterns over several quarters of RTS 27 reports. Consistency in performance is more telling than a single excellent quarter.

The type of order you place fundamentally changes how execution quality is perceived and measured. A market order is an instruction to buy or sell immediately at the best available current price. The priority here is speed and certainty of execution, even if it means accepting a slightly different price than what was initially displayed. This is where slippage is most prevalent and problematic. During periods of rapid price movement, the market price can change between the moment you click "buy" and the moment your order reaches the liquidity provider.

Limit orders, however, specify a maximum buying price or a minimum selling price. The priority is price certainty; if the market cannot meet your specified price, the order will not be filled. This mitigates negative slippage but introduces the risk of non-execution. A "rejection" for a limit order generally means the market simply did not reach your price, or reached it too briefly for your order to be filled within the available liquidity. This is often an acceptable outcome for traders who prioritise price control.

Stop orders, particularly stop-loss orders, often behave like market orders once triggered. When a stop price is hit, it converts into a market order, subject to the same slippage risks. This is critical for risk management. Understanding how your chosen broker handles these different order types – specifically their rejection and slippage rates for each – directly impacts your trading strategy's effectiveness. Some brokers might excel at limit order fills but perform poorly on market orders during volatility, a distinction the RTS 27 reports help clarify.

While regulatory reports provide a statistical baseline, traders ought to consider additional factors for a complete picture of execution quality. Latency, the delay between sending an order and its reception by the broker's servers and onward transmission to liquidity providers, is a critical, though rarely reported, metric. Even a few milliseconds can make a difference in high-frequency or scalping strategies. Brokers with servers physically closer to major financial hubs, or those with reliable fibre-optic networks, typically offer lower latency.

The broker's business model also impacts execution. Market Maker brokers often internalise client orders, acting as the counterparty. This can mean zero slippage in calm markets but also potential re-quotes. Straight Through Processing (STP) or Electronic Communication Network (ECN) brokers route orders directly to external liquidity providers. This typically results in variable spreads and a greater likelihood of both price improvement and slippage, reflecting true market conditions. Neither model is inherently superior; what matters is transparency and consistent performance for a trader's chosen style.

Finally, client reviews and independent audit reports, where available, can offer supplementary qualitative data. While anecdotal evidence should be treated with caution, consistent complaints regarding specific execution issues warrant investigation. Even with all the data, a small test order placed from a live account during varied market conditions is still the truest measure of a broker's actual execution performance for your specific setup. Take note of the time taken for fills, any visible slippage, and the accuracy of the filled price compared to the on-screen price at the time of order placement.

The compilation and analysis of execution statistics should not be viewed as an academic exercise, but as a core component of broker due diligence. Use this information to filter out brokers whose performance consistently underperforms for the instruments and order types you utilise. For active day traders or scalpers, negative slippage and market order rejection rates are of utmost importance. Even a fraction of a pip of consistent negative slippage can erode profit margins over hundreds of trades. For swing traders, while less sensitive to micro-slippage, the reliability of stop-loss execution during volatile periods remains critical.

No broker will offer flawless execution across all instruments and all market conditions. The objective is to identify a broker whose typical execution profile aligns with your strategy and risk tolerance. Do not be swayed by attractive headline spreads alone; always consider the total effective cost of trading, which includes commissions, swaps, and the often-hidden cost of slippage.

This data, required by regulators, serves as a valuable, if imperfect, tool for objective evaluation. It allows for a more informed discussion than anecdotal claims. Use this information not as a definitive verdict, but as an initial filter and a basis for further practical testing. Your trading capital deserves nothing less than a meticulous approach to selecting its custodian.