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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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Py
14.2k
Orders are getting cancelled before they are filled (Liquid Universe) 1 comment by Derek Melchin,
Py
877
FineSelection filter not producing any symbols. 1 comment by Derek Melchin,
C#
STAFF
ISDR, Minute The issue starts from Jul 29th, 2016 02:47 PM; and continues until Jul 29th, 2016 03:50 PM 2 comments, last comment by QuantConnect Robot,
C#
STAFF
ISDR, Minute The issue starts from Jul 29th, 2016 02:47 PM; and continues until Jul 29th, 2016 03:50 PM 1 comment by QuantConnect Robot,
C#
STAFF
ISDR, Minute The issue starts from Jul 29th, 2016 02:47 PM; and continues until Jul 29th, 2016 03:50 PM 2 comments, last comment by QuantConnect Robot,
Py
336
Fetching Historical MorningStar Data 1 comment by Derek Melchin,
Py
309
Combining technical indicators with machine learning models to generate trading strategies. 1 comment by Shile Wen,
C#
648
Alpaca Paper trading on Lean Brokerage Error : must be of type BacktestingBrokerage for use wth the BacktestingTransactionHandler 1 comment by Aaron Janeiro Stone,
Py
127
Where are the plots? 6 comments, last comment by Yuying liu,
Py
588
No data downloading from TOOLBOX in LEAN in Visual Studio 2 comments, last comment by Martin Molinero,
Py
4.6k
Trade only "Yahoo Top Gainers" 2 comments, last comment by S O'Keeffe,
Py
5.6k
Wmt, Minute The issue starts from Jun 11th, 2009 03:31 PM; and continues until Jun 11th, 2009 03:32 PM 6 comments, last comment by Arthur Asenheimer,
Py
693
'FxcmTransactionModel' is not defined 1 comment by Shile Wen,
Py
226
DateTimes recieved from historical data requests are one day ahead of time 1 comment by Laurent Crouzet,
C#
22
Debugging Quant Connect Lean in VS 3 comments, last comment by Alexandre Catarino,
Py
12
Skylight for Mac | Local changes wont upload, Skylight only syncs from server to local 1 comment by Shile Wen,
Py
107
Cloud vs Local IDE for python development 1 comment by Aaron Janeiro Stone,
Py
83
Please provide a way to easily search a data structure within the IDE... not just functions 2 comments, last comment by Jared Broad,
Py
440
What is the correct way of updating stop price of ticket in python? 1 comment by Shile Wen,
C#
2.2k
What are general rules for how to hookup Framework components? 2 comments, last comment by Derek Melchin,
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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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