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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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F#
297
Does this code do what the rules are written to illustrate? Started by Ted Penner,
C#
2.5k
Universe Warmup? 2 comments, last comment by James Smith,
C#
4.1k
Updated Engine Broke Code 1 comment by Jared Broad,
Py
10.5k
Suggestion: Store code with backtest 3 comments, last comment by Petter Hansson,
C#
5.9k
Interactive Brokers connection error 1 comment by Jared Broad,
29
Continous building 1 comment by Jared Broad,
78
I need help using this for a paper 9 comments, last comment by Mike Vaysburd,
Py
10.5k
Serious Testing 6 comments, last comment by Petter Hansson,
11
Need a noobie guide to backtest 1 comment by Alexandre Catarino,
140
Intraday Charts? (Sept. 2016) 3 comments, last comment by Alexandre Catarino,
C#
142
OnData Event does not trigger 6 comments, last comment by Alexandre Catarino,
C#
503
Trading on different time frames 4 comments, last comment by Alexandre Catarino,
C#
85.1k
Volatility adjusted MA + FX, something to experiment with Started by Tadas Talaikis,
C#
503
Inconsistent order fills 12 comments, last comment by Alexandre Catarino,
C#
142
Test on live algorthm 1 comment by Leng Dieb,
C#
180
Accord.Math Matrix Dot() and Ones() functions are not found 3 comments, last comment by Alexandre Catarino,
C#
323
Limitation to # of trades? 6 comments, last comment by Felix Bertram,
C#
1.1k
Gaps/bad data 4 comments, last comment by Jared Broad,
C#
180
Custom Window Indicator with multiple input series 3 comments, last comment by Alexandre Catarino,
12
How to run cAlgo here? 1 comment by Jared Broad,
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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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