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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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296
RollingWindow Indexing 2 comments, last comment by Jared Broad,
C#
540
Backtesting broke? 6 comments, last comment by Jared Broad,
C#
540
Incorrect Symbols Added to Universe 3 comments, last comment by TedVZ,
162
Forex Candlestick Resolution 2 comments, last comment by Eric Gao,
296
Forward Only Indicator Runtime Error - Not Using Helper 1 comment by Michael Manus,
143
Build Warning 5 comments, last comment by Jared Broad,
C#
1.1k
Run Time Error: Could not load file or assembly or one of its dependencies. (Open Stacktrace) 1 comment by Jared Broad,
C#
540
OnData not getting all the symbols 6 comments, last comment by TedVZ,
20
Adding the same security at multiple resultions 2 comments, last comment by Matthew Wilkinson,
C#
59
Does anybody knows of any simple sample for FXCM to help me to start ? C# or F# is good .... 5 comments, last comment by Alexandre Catarino,
75
Secondary offerings 1 comment by Alexandre Catarino,
223
EMA plots different than mainstream broker 7 comments, last comment by Alexandre Catarino,
60
How to place three way order? 8 comments, last comment by Varad Kabade,
296
RollingWindow Updating Mid Consolidation Method? 3 comments, last comment by Jared Broad,
14
Interesting historical research request - requires historical options data. Started by Dale osborn,
C#
540
Possible to run Backtest multiple times automatically? 1 comment by Alexandre Catarino,
Py
10.2k
Easy-Volatility-Investing 7 comments, last comment by Jack Pizza,
C#
361
Operationalizing predictive models with QuantConnect 2 comments, last comment by Andrew Hart,
Py
691
Problem with trading in live mode 1 comment by Andrew Hart,
C#
540
SetHoldings vs MarketOrder 2 comments, last comment by TedVZ,
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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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