QuantConnect/Lean
Lean
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
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QuantConnect
QuantConnect • individual
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Created
Nov 28, 2014
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README Summary
Lean is an open-source algorithmic trading engine developed by QuantConnect that supports multi-asset, multi-data-feed, multi-broker trading strategies. It provides a unified API for backtesting and live trading across various financial instruments including equities, forex, futures, options, and cryptocurrencies. The platform supports both Python and C# for strategy development and integrates with multiple data providers and brokerages.
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Updated 27 days ago
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production- Quality
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Timeline
- Project created
- Nov 28, 2014
- Forked
- Mar 13, 2026
- Your last push
- 27 days ago
- Upstream last push
- 7 days ago
- Tracked since
- Mar 17, 2026
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