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LEAN is the open source algorithmic trading engine powering QuantConnect. Founded in 2013 LEAN has been built by a global community of 80+ engineers and powers more than a dozen hedge funds today.

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Py
217
No order-events.json file from local backtest 1 comment by Alexandre Catarino,
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151
Lean live 'my project' run local issue 1 comment by Fred Painchaud,
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Distinguish among multiple Universes in Alpha's Update method 1 comment by Varad Kabade,
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FOREX FXCM market get empty data while using history() 3 comments, last comment by Michael Hsia,
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Forex Order Sizing Issue 1 comment by Louis Szeto,
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Install (initialize) LEAN CLI in Windows. The Windows does not recognize the "lean" command. 5 comments, last comment by James Lin,
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3.7k
Getting returns merged with fundamental dataframe 4 comments, last comment by Varad Kabade,
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Is One-Cancel-All/Other (OCA/OCO) bracket orders planned to be implemented in Quantconnect? 1 comment by Fred Painchaud,
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268
How can I see (or better download) my real Holdings? 1 comment by Varad Kabade,
Py
1k
Trying to perform standard deviation on rolling window of tradebar high./low differential. Backtest attached 4 comments, last comment by Vladimir,
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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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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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