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:

• arrow: Enables Apache Arrow schema and RecordBatch registries for custom data.
• defi: Enables the DeFi (Decentralized Finance) domain model.
• extension-module: Builds as a Python extension module.
• ffi: Enables the C foreign function interface (FFI) from cbindgen.
• high-precision: Enables high-precision mode to use 128-bit value types.
• python: Enables Python bindings from PyO3.
• python-arrow: Enables Python bindings together with PyArrow RecordBatch bridging.
• test-support: Enables test fixtures, builders, specs, and defaults.

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.