nautilus-core

Core foundational types and utilities for NautilusTrader.

The nautilus-core crate is designed to be lightweight, efficient, and to provide zero-cost abstractions wherever possible. It supplies the essential building blocks used across the NautilusTrader ecosystem, including:

• Time handling and atomic clock functionality.
• UUID generation and management.
• Mathematical functions and interpolation utilities.
• Correctness validation functions.
• Serialization traits and codecs.
• Cross-platform environment utilities.
• Abstractions over common collections.

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:

• extension-module: Builds as a Python extension module.
• ffi: Enables the C foreign function interface (FFI) from cbindgen.
• python: Enables Python bindings from PyO3.
• simulation: Enables deterministic simulation testing with MadSim.

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.