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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#
540
Consolidators using QCAlgorithmFramework and SetUniverseSelection 3 comments, last comment by Derek Melchin,
Py
401
Option selection based on dynamic stock selection 1 comment by Jack Simonson,
C#
183
Let a newbie brag for top 1% (+ thing I dont understand) 4 comments, last comment by Luca Napo,
C#
19.6k
Trades Summary customisation 3 comments, last comment by Halldor Andersen,
Py
128
Trailing Stops Following use of "self.SetHoldings" for entry 1 comment by Halldor Andersen,
C#
1.2k
Import Custom Date: Overrider Reader and set Time field 1 comment by Jack Simonson,
C#
219
Simple algorithm not working 1 comment by Gurumeher Sawhney,
C#
219
Forward analysis for a given period / calculations before a backtest 2 comments, last comment by Hugo Lu,
C#
87
Onnx Runtime 1 comment by Douglas Stridsberg,
Py
107
Portfolio & Portfolio.Invested not defined? 1 comment by Gurumeher Sawhney,
Py
107
Help On Sell In May Strategy 9 comments, last comment by Yao Yiyang,
Py
105
HELP: Getting current price in scheduled function. 5 comments, last comment by Halldor Andersen,
Py
419
Feedback on my ml Algo v2 Started by Georgios Kourogiorgas,
Py
60
Is the preferred way to run Lean on linux a native install or via docker container? 2 comments, last comment by Jared Broad,
Py
491
Futures spread and ratio 14 comments, last comment by CloudTrader,
Py
46
Autocomplete doesn't work in Python 5 comments, last comment by Jared Broad,
Py
29
Version control for algorithms? 3 comments, last comment by Jared Broad,
Py
89
Oanda Core Pricing Spreads 1 comment by Jack Simonson,
C#
509
Not receiving latest minute bar when calling History 4 comments, last comment by ScalpTrader,
Py
29
Docker not running if I create volumes for data Started by Munindar Kumar,
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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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