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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
3.4k
Trading tags are not showing 4 comments, last comment by Joao Antunes,
Py
79
Why prices in function passed to GetUniverse differ from history prices for the same moment? Started by Anna,
Py
STAFF
New Backtesting Cloud 11 comments, last comment by Flame,
C#
199
Reducing Drawdown in Momentum Strategies 1 comment by Derek Tishler,
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9
Problems running LEAN desktop on macOS 3 comments, last comment by Kevin Yuan,
Py
169
Algorithm Not Trading in Live Account 4 comments, last comment by Rohit Nagendra,
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10.6k
How do I specify filter for monthly contracts? 3 comments, last comment by Alexandre Catarino,
C#
1.3k
Institutional Holdings/Buyers 1 comment by Alexandre Catarino,
Py
29
AccessDenied Access Denied when running backtest 5 comments, last comment by Carlos D,
Py
10.6k
Option.SetFilter does not work for expiration date 1 comment by Alexandre Catarino,
Py
29
[Python] How do I create a variable for the price that I paid for a security in my portfolio? 1 comment by Derek Tishler,
Py
9
Perfomance metrics not matching - ¿Am I missing anything? Started by Eriz,
Py
10.6k
Feature request: Smart Pricing 1 comment by Alexandre Catarino,
Py
79
Universe selector price meaning 6 comments, last comment by Mark Axmann,
C#
550
Market orders 6 comments, last comment by Iman Mohtashemi,
C#
11
Data processing and consolidate issue Started by Grzegorz,
Py
15.2k
Adaptive Volatility (aka position sizing) 5 comments, last comment by Spacetime,
Py
2.6k
Relative Strength Strategies for Investing 5 comments, last comment by Leigham Springer Sutton,
C#
62
Test Multiple Models in a Portfolio Backtest 1 comment by Alexandre Catarino,
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10.6k
Stop Order not getting Filled 5 comments, last comment by Petter Hansson,
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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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