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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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C#
332
[HELP] Import a new futures market for local backtesting 2 comments, last comment by Alexandre Catarino,
Py
4.3k
Coding environment 3.0 initialization takes a long time 5 comments, last comment by Alexandre Catarino,
Py
197
Backtest IB FA multi account 2 comments, last comment by Alexandre Catarino,
Py
167
Timeouts when opening coding environments from quantconnect IDE 1 comment by Lucas ,
Py
3.1k
XGBoost Regression Model Prediction of Future Returns based on Indicator and Market Percent Change Data 8 comments, last comment by Derek Melchin,
Py
3.7k
Object not subscriptable error when filling array with historical data 6 comments, last comment by Vladimir,
Py
983
Continuous futures backtest not working on IDE 3.0 (works on 2.0) 2 comments, last comment by Louis Szeto,
Py
1k
Manually warming up constructor with history after universe selection, then registering for automatic updates? 6 comments, last comment by Vladimir,
Py
1.2k
Trying to get NQ future history for algo initialization 5 comments, last comment by Louis Szeto,
Py
60
Differing ObjectStorage within one project 4 comments, last comment by Louis Szeto,
Py
833
How to access bar data on continous Futures contract 1 comment by Louis Szeto,
Py
5.6k
UPRO,TQQQ, Minute The issue starts from Jan 12th, 2022 09:43 AM; and continues until Jan 13th, 2022 09:43 AM Started by Brian Christopher,
Py
545
Sending data from local LEAN container 3 comments, last comment by Nottakumasato,
Py
180
Accessing "Data" from other Classes 4 comments, last comment by Adham Al-Harazi,
Py
89
AUDUSD, Hour The issue starts at the start of the data; and continues until now 3 comments, last comment by QuantConnect Robot,
Py
4.3k
Live-trading with IBKR short availability 1 comment by Louis Szeto,
Py
7.4k
Confused here, why are all Market Orders executing at midnight exactly 3 comments, last comment by Zimman ,
Py
158
Kernel problem 1 comment by Fred Painchaud,
Py
167
Unable to toggle Strategy Builder by default... 1 comment by Louis Szeto,
C#
2k
Backtest results 1 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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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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