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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#
1.1k
Question: Custom Design Indicator and Online Backtest Started by OuYangFeng,
39
Put Options - Sample algorithm for Finding, Choosing & Trading options 2 comments, last comment by Liz ForPrez,
Py
10.5k
Schedule.On correct way of triggering one shot event? 3 comments, last comment by Petter Hansson,
31
IB Combo Orders 5 comments, last comment by Derek Melchin,
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84
Interactive Brokers for FX 7 comments, last comment by Laurent Crouzet,
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137
Opt-in hedge-fund 6 comments, last comment by Jared Broad,
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89
Cannot access Universe.DollarVolume when running backtesting locally 3 comments, last comment by Alexandre Catarino,
Py
287
Algorithm Initialization Error 1 comment by Jared Broad,
C#
333
Treynor Ratio 2 comments, last comment by Alexandre Catarino,
619
How to get current ticker price from within OnData? 8 comments, last comment by Louis Szeto,
C#
421
Fills in the paper trade broker 5 comments, last comment by Alexandre Catarino,
130
Using the Lean API 5 comments, last comment by Jared Broad,
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39
Split adjusted price data 2 comments, last comment by Liz ForPrez,
29
MQL4 model developed, can be transformed to use here? 5 comments, last comment by Rustle Heinz,
C#
1.1k
What are the supported Forex pairs? What are the 13 Major Currency? 1 comment by Alexandre Catarino,
C#
115
Implied Volatility on Options returns zero 4 comments, last comment by Matt M,
39
Algorithm Parameters aren't cloned 2 comments, last comment by Jared Broad,
139
IB Trading 8 comments, last comment by Alexandre Catarino,
C#
333
Forward/Live test costs... 1 comment by Alexandre Catarino,
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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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