Elixir Q & A


How to implement trading algorithms in Elixir?

Implementing trading algorithms in Elixir involves a combination of domain expertise, software design, and leveraging the language’s concurrency and fault-tolerance capabilities. Here are the key steps to implement trading algorithms in Elixir:


  1. Data Ingestion: Begin by ingesting real-time market data, which can include stock prices, order book data, and trade executions. Elixir’s concurrency model is well-suited for handling multiple data streams simultaneously. You can use processes to fetch and process data concurrently.


  1. Algorithm Design: Define your trading strategy and algorithm. This includes specifying conditions for entering and exiting trades based on technical indicators, price movements, or any other criteria. Elixir’s pattern matching and functional programming features can help in expressing complex trading rules concisely.


  1. Risk Management: Implement risk management mechanisms to protect your trading capital. This involves setting stop-loss orders, position sizing algorithms, and portfolio risk diversification. Elixir’s fault-tolerance features can help you design systems that handle unexpected events gracefully.


  1. Order Execution: Integrate with trading platforms or brokerages to execute orders. Elixir allows you to manage concurrent order submissions and responses efficiently. Ensure that your system can handle order placement, modification, and cancellation in real-time.


  1. Backtesting: Before deploying your algorithm in a live trading environment, perform extensive backtesting using historical data. Elixir’s functional nature makes it suitable for creating testable and reproducible backtesting frameworks. This step helps validate the effectiveness of your algorithm.


  1. Monitoring and Logging: Implement robust monitoring and logging to track the performance of your trading algorithm. Elixir’s built-in tools for supervision trees and event handling make it easier to monitor the health of your system.


  1. Scaling: If your algorithm proves successful, you may need to scale it to handle a higher volume of trades. Elixir’s scalability features, such as distributed processes and clustering, can assist in building a scalable trading infrastructure.


  1. Security: Pay close attention to security practices, especially when handling financial data and executing trades. Implement authentication, authorization, and encryption mechanisms to protect sensitive information.


  1. Compliance: Ensure that your trading algorithm complies with regulatory requirements in your jurisdiction. Elixir’s robust error handling and audit trail capabilities can help demonstrate compliance and trace the execution of trades.


  1. Continuous Improvement: Trading algorithms require ongoing monitoring and refinement. Elixir’s hot code swapping feature allows you to make updates to your algorithm without interrupting the trading system.


Implementing trading algorithms in Elixir involves a structured approach that combines algorithmic design, data processing, risk management, and robust system architecture. Elixir’s concurrent and fault-tolerant features make it a suitable choice for building trading systems that can handle real-time data and execute orders reliably. However, it’s essential to have a deep understanding of both trading strategies and Elixir’s capabilities to develop effective and profitable trading algorithms.


Previously at
Flag Argentina
time icon
Tech Lead in Elixir with 3 years' experience. Passionate about Elixir/Phoenix and React Native. Full Stack Engineer, Event Organizer, Systems Analyst, Mobile Developer.