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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
92
"if not self.Transactions.GetOpenOrders()" not functioning in Live Deployment with IBKR 3 comments, last comment by Louis Szeto,
Py
2.9k
5 min data with boilinger band 1 comment by Louis Szeto,
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462
When do manually placed trades kill the algorithm? 4 comments, last comment by Nightrader,
C#
4k
Error when Adding VIX 2 comments, last comment by Daniel Russell,
Py
265
ES 1S1, Minute The issue starts at the start of the data; and continues until now Started by Jerry Inyang,
Py
560
Algorithm Framework with multiple Alphas trade on unanimous signals Started by George Riley,
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7.4k
Algorithm lab on mobile 1 comment by Derek Melchin,
C#
4k
Live Trading Question - Why does my default chart not update in Extended Hours? 1 comment by Louis Szeto,
Py
560
Collaborate on algo framework – looking for like-minded people Started by George Riley,
C#
228
Unable to reference QuantBook on using QuantConnect.Research 1 comment by Derek Melchin,
C#
172
ES, Minute The issue starts from Dec 13th, 2022 08:00 PM; and continues until Dec 14th, 2022 12:00 AM Started by Connor Lind,
Py
2.3k
Trading 1-minute price movements against 5-minute consolidated bars 1 comment by Derek Melchin,
Py
271
Inconsistent offset in continuous futures 3 comments, last comment by Louis Szeto,
Py
1.2k
Easily set backtest date to an entire month 1 comment by George Riley,
Py
637
Add support for tiingo data feed to LEAN 1 comment by Derek Melchin,
Py
526
Order Date Issue 1 comment by Alexandre Catarino,
Py
888
Automatically update the Maximum Indicator 1 comment by Derek Melchin,
Py
458
ETF Trend Following Algorithm to beat S&P 500 returns 1 comment by Derek Melchin,
C#
247
Phantom Trades (Equity Curve Trading) Started by Israel Oyinlola,
Py
191
Question about when Market Orders get filled 1 comment by Dutchman71,
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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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