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QuantConnect/Lean
GitHub
github.com
lean.io
Releases
4.18K
Frequency
1 day
Last Release
3 days ago
Tuesday, 23 June 2026, 14:05
Stars
20.1K
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
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Releases
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Filter
Version
Date
Stability
Stability is determined by the version string and my be inaccurate.
v2.1.6.1
Dec 15, 2015
Tuesday, 15 December 2015, 19:39
Stable
v2.1.6.0
Dec 10, 2015
Thursday, 10 December 2015, 04:05
Stable
v2.1.5.6
Dec 2, 2015
Wednesday, 2 December 2015, 23:28
Stable
v2.1.5.5
Dec 2, 2015
Wednesday, 2 December 2015, 20:37
Stable
v2.1.5.4
Dec 1, 2015
Tuesday, 1 December 2015, 22:24
Stable
v2.1.2
Jun 29, 2015
Monday, 29 June 2015, 16:52
Stable
v2.1.1
Jan 12, 2015
Monday, 12 January 2015, 17:36
Stable
v2.1
Jan 12, 2015
Monday, 12 January 2015, 17:01
Stable
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