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QuantConnect
/
Lean
Public
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
Apache License 2.0
Updated Feb 2, 2026
Created Nov 28, 2014
View on GitHub
16,177
stars
4,267
forks
473
watchers
244
open issues
View on GitHub
Languages
Codebase composition by bytes
Top Contributors
MC
mchandschuh
2554 commits
JA
jaredbroad
2305 commits
MA
Martin-Molinero
1912 commits
ST
StefanoRaggi
1598 commits
AL
AlexCatarino
857 commits
JH
jhonabreul
349 commits
GS
gsalaz98
338 commits
JA
Jay-Jay-D
298 commits
QU
quietjoy
289 commits
MA
Marinovsky
215 commits
Recent Stargazers
AM
ammachado
about 11 years ago
GA
gaviles
about 11 years ago
JA
JanWillems
about 11 years ago
MY
mysl
about 11 years ago
RY
ryandhall
about 11 years ago
IM
imoliver1222
about 11 years ago
QU
quicksilver8
about 11 years ago
BR
BradGroux
about 11 years ago
HZ
hzheng
about 11 years ago
IM
imddba
about 11 years ago
Repository Complexity
Approximate file count and repository size.
Files
-
Size (KB)
582,977
Issues & Activity
Open vs closed issues and recent activity peak.
Open Issues 16
Closed Issues 84
Open Issues
100
Activity Peak
Most recent day with highest activity
Feb 2, 2026 • 13 events
Stars & Forks Over Time
Cumulative stars and forks based on recent history.