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Lexie Robinson

Lexie Robinson

Interactive Brokers Currency Improvements, New Notebook API Support, Options Backtesting Enhancements – Release Notes v9464-v9760

LEAN v9464-v9760 unlocks key live trading functionality for accounts with non-USD base currencies, to better serve our global clients. We’ve streamlined harnessing the QuantConnect API in the Jupyter Research environment to analyze backtests and projects with ease. We made improved options backtesting for better out-of-the-money assignment messaging.  Features  OptionChain and OptionContract improvements (Github | Docker)  […]

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    Lexie Robinson

    Lexie Robinson

    Autocomplete Python Stubs CI, Binance Exchange Integration, LEAN Speed Improvement – LEAN Release Notes v9194-v9449

    In the last 2 weeks the QuantConnect team has been focused on stability and bug fixes. Diving deep into some of the long lingering issues and publishing fixes for the along with additional regression tests to lock in that stability. We also surpassed 10,000 unit tests giving the platform a rock solid foundation for expansion! […]

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    Lexie Robinson

    Lexie Robinson

    Python Auto-complete, and with Integrated Docker-Local IDE Support with VSCode, PyCharm and Visual Studio. Release notes v9842-v9185

    In this release of updates, we have made substantial changes to improve our local development experience through deep integration of the LEAN Docker containers, along with publishing a research docker container for running your LEAN Research Notebooks locally. These docker containers are completely integrated into VSCode, PyCharm, and Visual Studio allowing you to run backtests […]

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    Stefano Raggi

    Stefano Raggi

    Senior Engineer

    R-Support, Visual Studio Integration, Python Updates – LEAN Release Notes v2.4.0.1

    This release adds R-support to LEAN; allowing you to run R-code from your LEAN C# algorithms. This makes the R statistics libraries available for use in QuantConnect. Additionally a community member contributed a plugin for Visual Studio which uses the QuantConnect API to perform file editing tasks and deploy backtests. Additionally this release extends Python […]

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    Jared Broad

    Founder & CEO

    Python Library Support – LEAN Release Notes v2.4.0.0

    This release adds full python support to enable using common python libraries in your algorithm.It is implemented using the PythonNet library which allows importing C# classes into python and vice versa. The new python algorithms are fully supported in local and cloud trading. There are some minor API adjustments to use the new library but […]

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    Jared Broad

    Founder & CEO

    Free Streaming Live Data with IEX – LEAN Release Notes v2.3.0.3

    This release adds the IEXDataQueueHandler allowing LEAN users to stream free US equity trades to their strategy; along with numerous bug fixes to the OANDA and FXCM brokerage implementations. Additional regression algorithms were added to automate testing of daily data algorithms. The Interactive Brokers connection logic was also made more intelligent to fail quickly when […]

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    Jared Broad

    Founder & CEO

    Release Notes – LEAN v2.3.0.1

    This release fixed minor bugs in LEAN to improve its stability and consistency across backtesting and live trading. There were no breaking changes in regression tests or the API of LEAN. Features Update AlgoSeek data converter to accept input file mask to only convert specific source files. Added IsAssignable to detect assignment orders in backtesting*. […]