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Research Announcements Lean
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Radically Open-Source Algorithmic Trading Engine

LEAN is the open-source algorithmic trading engine powering QuantConnect. Founded in 2012 LEAN has been built by a global community of 180+ engineers and powers more than 300+ hedge funds today.

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Using mlfinlab in quanconnect 8 comments, last comment by .ekz.,
Extend PortfolioTarget Class 1 comment by Varad Kabade,
Averaging down position - beginner 2 comments, last comment by Searcher,
Understanding Portfolio Margin Remaining and Margin Used 2 comments, last comment by Bodhi,
Warming up indicators with historical data 14 comments, last comment by Louis Szeto,
Issue Running Quantconnect on Local IDE 1 comment by Jasper van Merle,
Trades out of order 1 comment by Louis Szeto,
Runtime error - KeyError exception 1 comment by Varad Kabade,
Will I get split/dividends events on live if I am using Interactive Brokers data feed? 1 comment by Louis Szeto,
Help - Local live trading with Lean-Cli is crashing daily 1 comment by Varad Kabade,
Risk model and alpha 5 comments, last comment by Louis Szeto,
When all the tokens have been consumed, lean will break down. How can I set more time for training? 1 comment by Varad Kabade,
Need help with the future data 2 comments, last comment by Will Chau,
SELF WARMUP FUNCTION 2 comments, last comment by Vladimir,
Hedged Equity Algo 5 comments, last comment by Varad Kabade,
How to implement a rolling closeWindow in my code with a universe of stocks? 1 comment by Varad Kabade,
Universe indicator automatic update or manual update? 6 comments, last comment by Cheng Li,
Web notification issues 1 comment by Alexandre Catarino,
Error adding custom Python library. 2 comments, last comment by David Avraamides,
Live trading stats 1 comment by Louis Szeto,
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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.

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