nautilus-model

Trading domain model for NautilusTrader.

The nautilus-model crate provides a type-safe domain model that forms the backbone of the framework and can serve as the foundation for building algorithmic trading systems.

NautilusTrader

NautilusTrader is an open-source, production-grade, Rust-native engine for multi-asset, multi-venue trading systems.

The system spans research, deterministic simulation, and live execution within a single event-driven architecture, providing research-to-live semantic parity.

Feature flags

This crate provides feature flags to control source code inclusion during compilation:

• ffi: Enables the C foreign function interface (FFI) from cbindgen.
• python: Enables Python bindings from PyO3.
• stubs: Enables type stubs for use in testing scenarios.
• high-precision: Enables high-precision mode to use 128-bit value types.
• defi: Enables the DeFi (Decentralized Finance) domain model.
• extension-module: Builds as a Python extension module.

Documentation

See the docs for more detailed usage.

License

The source code for NautilusTrader is available on GitHub under the GNU Lesser General Public License v3.0.

NautilusTrader™ is developed and maintained by Nautech Systems, a technology company specializing in the development of high-performance trading systems. For more information, visit https://nautilustrader.io.

Use of this software is subject to the Disclaimer.

© 2015-2026 Nautech Systems Pty Ltd. All rights reserved.