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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
AMBASSADOR
Momemtum strategy - numerical precision issues in the factor file causing issues in backtest 2 comments, last comment by Simon David,
C#
280
Importing custom data 2 comments, last comment by Super Richman,
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1k
How to sell a security during the day while on a daily resolution. 5 comments, last comment by Nico Xenox,
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1k
MSFT, Daily The issue starts from Jan 28th, 2020; and continues until Jan 28th, 2020 Started by Rishab Maheshwari,
Py
1k
Can anyone explain why this call option is getting exercised? Started by EliotH,
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2k
How to modify ETF Momentum algo to use top 3 symbols by momentum 3 comments, last comment by Craig McWilliams,
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176
Stop Orders aren't getting filled even when price is breached Started by John M,
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4k
Algorithim Sells holdings but no liquidate specified? 1 comment by Axist,
Py
142
Site speed 1 comment by Matt,
Py
174
Backtest Node Limit 2 2 comments, last comment by Nadeem Ahmed,
Py
4k
Rolling Window data one period behind? 1 comment by Yuri Lopukhov,
Py
348
VIX CBOE data is not working in live Started by Vijayananth M,
Py
162
Need help with using zip file for custom data 9 comments, last comment by Nico Xenox,
Py
140
Filter Option Contract 1 comment by Thomas,
Py
112
Unable to locate ticker - error 1 comment by Nico Xenox,
Py
2.2k
Cannot find option chain on some days 2 comments, last comment by Nico Xenox,
Py
122
Quant-Investing model focused on value small-caps and efficiency Started by Denis Litvin,
Py
80
How to handle Automatic Contract Rollover(Futures) using the Algorithm Framework? 2 comments, last comment by Dsherman,
Py
78
Help with my strategy. 2 comments, last comment by Stephen Hyer,
Py
4k
Getting Historical Stock Price on a list of stocks 2 comments, last comment by Axist,
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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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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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