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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
458
Options contracts grow beyond SetFilter limits 2 comments, last comment by Louis Szeto,
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54
How future contract trading works? 1 comment by Varad Kabade,
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2.3k
Experiencing difficulty consolidating second-resolution data to 1-minute consolidated bars in a rolling window. 2 comments, last comment by James Hawkins,
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4k
UNABLE TO COMPLETE BOOTCAMP : TIINGO SUSCRIPTION MISSING 2 comments, last comment by Alejandro Reynoso del Valle,
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5.5k
All the continuous contracts, Minute The issue starts at the start of the data; and continues until now 2 comments, last comment by QuantConnect Robot,
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5.5k
All the continuous contracts, Minute The issue starts at the start of the data; and continues until now 2 comments, last comment by QuantConnect Robot,
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About borrow rates for short selling 1 comment by Alexandre Catarino,
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153
Cannot get managed object 1 comment by Vladimir,
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Feature request for vscode 1 comment by Alexandre Catarino,
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86
My FB got hacked and so my oath login account won't let me access 1 comment by Varad Kabade,
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223
TLT, Daily The issue starts at the start of the data; and continues until now Started by Emile Farkouh,
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1k
How to use portfolio percentage/currentholdings for stopmarket and limit methods 2 comments, last comment by Alexandre Catarino,
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Problem with stop market and limit order helper methods. 3 comments, last comment by Fred Painchaud,
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STAFF
Alpha Streams Refactoring 2.0 16 comments, last comment by Jared Broad,
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IBKR auth when deploying live 1 comment by Stephan Vanwoezik,
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Why one limit order got triggered twice at the same time? 6 comments, last comment by Michael Hsia,
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How to view dataframe in new IDE 1 comment by Alexandre Catarino,
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458
Option Chain Provider is missing some contracts 3 comments, last comment by Louis Szeto,
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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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