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News, Insight and Events

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23, April, 2026

How Options Flows Move Equity Markets: Insights from High-Quality Historical Data

In this analysis, we demonstrate how you can capture these interconnected market behaviours by combining two complementary datasets: SpiderRock's options volatility surface data to estimate dealer gamma positioning, and BMLL's high-frequency equity market data.

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21 April, 2026

Decoding Geopolitical Risk: A Level 3 Market Microstructure Analysis of Crude Oil at the Start of the Iran War

Geopolitical risk in financial markets is typically understood as a macro phenomenon - stress escalates, supply is threatened, prices spike. But the order book tells a different story. Using BMLL Level 3 data, containing every insert, cancel, and execution at every price level, we show tha...

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19 March, 2026

How Building an Equities Business Changed Our View of Liquidity

Liquidity isn’t just trading volume—it’s fragmented and often hidden across multiple venues. Building an equities business revealed that relying on traditional data gives an incomplete picture, so understanding liquidity requires a broader, more holistic view.

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29 January, 2026

BMLL’s Rob Laible on how data and analytics are reshaping the buy-side trading desk

Fresh from moderating a panel on the evolving role of data and analytics, Rob Laible, head of Americas at BMLL, explains how buy-side trading workflows are becoming increasingly data-driven, from access and ingestion through to execution, and assesses whether AI on the trading desk has moved beyond hype to practical reality.

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19 January, 2026

Periodic auctions: shaping the balance of liquidity for European equities

Periodic auctions (PA) are no longer marginal; they have come to shape European market microstructure and are now both measurable and actionable. In this article you can understand and adapt to these evolving market structural shifts with our insights into the rise of PAs and their impact on market microstructure.

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7 January, 2026

The data beneath the surface: what the first month of Reg NMS changes actually revealed

The US equity market is undergoing major structural change, and early analysis of the first Reg NMS updates shows that while reported liquidity metrics have shifted, underlying liquidity has not - only the way it is measured. Changes to round lots, upcoming fractional share reporting, odd-lot NBBOs, and dynamic tick sizes mean firms can no longer rely on top-of-book data without risking flawed analysis and backtests. At the same time, structurally growing overnight and hidden liquidity underscore the need for granular Level 3 data to trade, manage risk, and generate alpha as the market heads into 2026.

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24 November, 2025

Competing in today’s dynamic markets with faster, smarter execution analytics: How a leading $1.5 Trillion AUM asset management firm leveraged BMLL data to optimize TCA workflows

How a leading $1.5 Trillion AUM asset management firm leveraged BMLL data to optimize TCA workflows

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27 October, 2025

A New Chapter: Nordic Capital to Accelerate BMLL’s Mission

This is truly a proud day for BMLL, for our clients and our team as we announce that Nordic Capital is acquiring BMLL. Only a few months ago, I talked about the game-changing years we’ve had, but now, we are playing in a different league. Let’s be clear - this is more than just an acquisition; it is a profound partnership built on a joint commitment to accelerate BMLL’s next phase of growth. With Nordic Capital by our side, along with Optiver as a minority shareholder, we are very excited about the future and the impact we will have on the way that the market thinks about and consumes historical market data.

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27 October, 2025

(Round) Lots of Change: What the upcoming Reg NMS changes mean for trading

The new rules have the potential to alter order queue dynamics, execution priority, routing decisions and price discovery. Understanding the impact of these changes, and what it means for trading, is critical for market participants in order to manage risk and to continue to trade effectively. In this article, we analyze some of the key Reg NMS changes, and what these might mean for market participants.

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20 October, 2025

Would you hire Picasso to paint your living room?

I’m sure we’d all want to say yes, knowing that this wouldn’t be the best use of his time and skills. By the same token, every day, some of the industry’s most experienced quants, hired at great expense, spend 80% of their valuable time scrubbing data before they can start using it. But is that the best use of their skills? That debate is now over. And here is why.

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3 October, 2025

Accelerating Market Insight with BMLL Trades Plus

BMLL Trades Plus is a dataset that links trades and quotes to give users a richer, holistic view of intraday market dynamics. This article highlights how Trades Plus helps buy-side firms optimise routing, brokers benchmark algorithms, and venues assess performance - delivering deeper insights with less complexity.

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29 September, 2025

Enhancing Venue Performance: How Aquis Markets Built an Analytics Solution with BMLL to Drive Growth

Aquis Markets selected BMLL to scale its analytics without building a complex in-house data system. Aquis combined its own data with BMLL harmonised market data to compute custom KPIs, benchmark members, and assess liquidity and market quality. This approach reduced cost and complexity, sped up analysis, and supported business development by enabling rapid, actionable insights.

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17 September, 2025

Garbage In, Losses Out - What defines high-quality historical market data, and why it matters

In this article, Dr Elliot Banks explores what makes good quality, usable historical market data, and the key questions to ask when sourcing it.

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1 September, 2025

Scaling Historical Trading Data Storage Using Amazon S3 with BMLL

Learn how financial data and insights provider BMLL is storing petabytes of historical financial data at scale on AWS.

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6 August, 2025

Powering Smarter Execution: How KCx Built a Best-in-Class SOR with BMLL

KCx partnered with BMLL to accelerate the development of KCx Spark, a Smart Order Router designed to deliver best execution across fragmented European equity markets. By leveraging BMLL’s harmonised Level 3 data and scalable analytics platform, KCx rapidly moved from data exploration to live execution without the burden of internal data engineering. This collaboration laid the foundation for KCx’s broader trading technology transformation, including the future development of its next-gen platform, KCx Omni.

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