TradeTech Eye — Capital Markets Technology News

BMLL and Simudyne Partner to Launch AI-Driven Reactive Market Simulation Models

By Lauren Towner · 30 September 2026

Press Release: BMLL and Simudyne Partner to Launch AI-Driven Reactive Market Simulation Models | Featured Image by FF News

Quick Summary

BMLL and Simudyne have partnered to integrate high-fidelity historical data with generative AI to power advanced market simulation. This collaboration enables traders and exchanges to move beyond static replays to reactive environments that adapt to user orders in real-time, significantly improving algorithmic back-testing and risk management.

How Does the BMLL and Simudyne Partnership Improve Market Simulation?

The collaboration solves the problem of static historical replay by combining BMLL’s harmonised Level 2 and Level 3 order book data with Simudyne’s Pulse simulator. This allows for the creation of Large Market Models that use generative AI techniques similar to those found in ChatGPT. By front-loading high-quality data into these models, the partnership ensures that the market simulation environment is not limited by hand-crafted rules but is instead driven by actual market dynamics.

  • Reactive back-testing that adapts to executed orders in real-time.
  • Synthetic tick-data generation for client-specific fine-tuning.
  • Integration within the BMLL Data Lab for a secure sandbox environment.

What Results Can Traders and Exchanges Expect from This Technology?

Algo traders and quants can now perform reactive back-testing, which provides a more accurate reflection of how their strategies would perform in live markets. For execution and TCA analysts, the platform enables the simulation of large orders to estimate slippage and market impact before capital is committed. This technology also allows exchanges to test matching engine logic and circuit breakers in a risk-free environment using faithful simulator replicas.

  • Sub-millisecond precision in market simulation models.
  • FIX and API connectivity for seamless system validation.
  • Stress-testing margin models against simulated volatility events.

Why Is High-Fidelity Data Essential for AI in Capital Markets?

High-quality training data is the foundational element for any sophisticated AI-driven financial model. As Justin Lyon, CEO of Simudyne, noted: "We are very excited to collaborate with BMLL to push the boundaries of market simulation. As we move towards data-driven, generative AI models, simulation fidelity is only as strong as the data underpinning them." By leveraging BMLL's continually engineered data, Simudyne can reproduce real market dynamics at the order-book level, bridging the gap between historical behavior and synthetic markets.

FF NEWS TAKE:

This partnership is a significant leap forward because it moves market simulation from a passive look-back tool to an active, reactive intelligence engine. By applying Large Market Models to granular Level 3 data, BMLL and Simudyne are providing the industry with the high-fidelity sandbox it has long lacked. This isn't just a data play; it's a fundamental upgrade to how Capital Markets participants validate risk and strategy in an increasingly AI-driven world.

Companies in this story: Simudyne, BMLL

People in this story: Justin Lyon, Paul Humphrey

More from News