Safe. Realistic Environment.
Test your trading and execution applications and strategies
Built by Quod Financial. Open to the Industry
QuantReplay is a powerful, open-source multi-asset market simulator developed by Quod Financial, born out of a deep, internal need: we couldn’t find a realistic, scalable, and flexible simulator to rigorously test trading strategies across diverse asset classes and fragmented markets—so we built one.
Now, we’re making it available to the public.
Innovative Origins
Our Story
Modern trading teams—whether traders, quants, or developers—face a common challenge: how do you test execution strategies with confidence when simulators lack realism, can’t scale across multiple asset classes, or fail to mimic actual exchange dynamics?
We searched for a solution and found:
Simulators were mostly proprietary, rigid, and closed.
Most supported only a single asset class or a single venue.
Very few allowed for authentic trading lifecycle modeling.
There was little support for structural market features like auctions, market halts, or real-time phase changes.
So we decided to build the tool we needed: a modern, multi-asset, community-driven simulator capable of replicating the complexity of real-world financial markets—with flexibility, extensibility, and performance in mind.
Opening Possibilities
Why Open Source?
We believe that the future of trading innovation should not be locked behind enterprise-only paywalls.
Democratize realistic execution strategy development.
That’s why we’ve open-sourced QuantReplay. We want the community to have access to the infrastructure needed to build, test, and refine trading strategies in a simulated but realistic environment—without compromise.
Whether you’re developing strategies for Equities, FX, Futures, or Digital Assets, QuantReplay is built to simulate the market behavior you actually encounter: fragmented liquidity, auction phases, order book dynamics, latency, volatility events, and more.
Collective Power
A Community-Driven Future
QuantReplay is more than just a product—it’s the beginning of an open trading technology ecosystem.
Community-driven innovation fuels trading evolution.
We’re inviting quants, developers, and financial technologists to contribute, extend, and build on top of QuantReplay. Whether you’re simulating a microstructure, modeling market stress, or building a new strategy, QuantReplay gives you the playground to test it—with realism, speed, and control.
By removing the barriers to entry and offering this infrastructure to the public, we hope to democratize access to advanced trading simulation and empower a new wave of financial innovation.
Join the Movement
Explore the GitHub repository to get started, contribute, or collaborate.
About
Quod Financial
Quod Financial is a leading trading technology provider for Sell-Side and Buy-Side institutions.
Known for our modular, high-performance O/EMS platform
We deliver solutions for Equities, FX, Derivatives, and Digital Assets with a strong focus on automation, execution performance, and innovation.
QuantReplay is part of our ongoing commitment to empower trading teams with the tools they need to thrive in modern financial markets.
QuantReplay is free,
open-source software.
