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QuantConnect

22 indexed repositories · View on GitHub

Lean
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

C# · 21691 stars
lean-cli
CLI for running the LEAN engine locally and in the cloud

Python · 326 stars
Documentation
QuantConnect Wiki Style Documentation Behind QuantConnect

HTML · 261 stars
IBAutomater
Automates IB Gateway start, stopping and restarting.

Java · 143 stars
Lean.Brokerages.InteractiveBrokers
InteractiveBrokers Brokerage Plugin

C# · 79 stars
Lean.Brokerages.Zerodha
Zerodha Brokerage Plugin

C# · 25 stars
quantconnect-stubs-generator
Automatically generate Python type stubs for QuantConnect's Lean

C# · 21 stars
Lean.Brokerages.TradeStation
TradeStation Brokerage Plugin

C# · 19 stars
Lean.Brokerages.Alpaca
Alpaca Brokerage Implementation

C# · 18 stars
Lean.Brokerages.Template
Lean Brokerages Template

C# · 14 stars
Lean.Brokerages.Tastytrade
Tastytrade Brokerage Implementation

C# · 11 stars
Lean.Brokerages.Tradier
Tradier Brokerage Implementation

C# · 10 stars
Lean.Brokerages.OANDA
OANDA Brokerage Implementation

C# · 9 stars
Lean.Brokerages.ByBit
ByBit Brokerage Integration to LEAN

C# · 7 stars
Lean.Brokerages.TradingTechnologies
Trading Technologies Brokerage Plugin

C# · 6 stars
Lean.Brokerages.Coinbase
Coinbase Pro brokerage template

C# · 5 stars
Lean.DataSource.BenzingaNews

C# · 3 stars
Lean.Brokerages.dYdX
dYdX Brokerage Plugin

C# · 3 stars
Lean.Brokerages.Kraken
Kraken Brokerage Plugin

C# · 3 stars
Lean.DataSource.BrainSentiment

C# · 2 stars
2 more repositories live on View on GitHub

Beginner friendly Everything

Open All

Map Alpaca SIP sale conditions to Lean TradeConditionFlags / QuoteConditionFlags Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

QuantConnect/Lean.Brokerages.Alpaca#62 · Opened Apr 20, 2026
[Library Request] oipd Open

library-request

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/Lean#9414 · Opened Apr 17, 2026
Library Upgrade: pyvinecopulib Open

library-request

Difficulty 3/5 1-2 days Newbie friendliness 48/100

QuantConnect/Lean#9376 · Opened Apr 8, 2026
Unable to resolve CFD symbol: VXX Open

question

Difficulty 3/5 1-2 days Newbie friendliness 45/100

QuantConnect/Lean.Brokerages.InteractiveBrokers#220 · Opened Mar 19, 2026
[Library Upgrade] uni2ts, momentfm, tsfm_public (Moirai, MOMENT, Granite TTM) Open

library-request

Difficulty 4/5 3-5 days Newbie friendliness 42/100

QuantConnect/Lean#9340 · Opened Mar 17, 2026
on_assignment_order_event() called before the shares are actually on the portfolio. Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

QuantConnect/Lean#9321 · Opened Mar 6, 2026
Revise "touched" flag handling Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

QuantConnect/Lean.Brokerages.Kraken#56 · Opened Feb 16, 2026
Combo update path can fail to resolve grouped orders from a single-leg update request Open

QuantConnect/Lean.Brokerages.InteractiveBrokers#217 · 1 assignee · Opened Feb 14, 2026
Double OnData Call When Add Subcription in Scheduled Event Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#9279 · 1 comment · Opened Feb 11, 2026
Detected Delay Streaming Data Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

QuantConnect/Lean.Brokerages.TradeStation#77 · Opened Feb 10, 2026
[Library Upgrade] hdbscan Open

library-request

Difficulty 3/5 1-2 days Newbie friendliness 30/100

QuantConnect/Lean#9276 · 3 reactions · Opened Feb 9, 2026
Supports downloading and generating future universe files Open

depth feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

QuantConnect/Lean#9275 · Opened Feb 9, 2026
Expand `IDataQueueHandler` for `DataSource` consumers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/Lean#9272 · Opened Feb 6, 2026
Notify Missing Data Source (404 Error) Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

QuantConnect/Lean#9269 · 2 comments · Opened Feb 5, 2026
Create cloud CI regression tests which run against actual API Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/lean-cli#619 · Opened Feb 2, 2026
TWS 10.44 Upgrade Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

QuantConnect/Lean.Brokerages.InteractiveBrokers#214 · Opened Jan 26, 2026
Error 10058 : Guaranteed Leg Limit Order Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

QuantConnect/Lean.Brokerages.InteractiveBrokers#213 · 1 comment · Opened Jan 26, 2026
[Library Upgrade] skfolio Open

library-request

Difficulty 3/5 1-2 days Newbie friendliness 35/100

QuantConnect/Lean#9233 · 1 comment · 1 reaction · Opened Jan 19, 2026
ImmediateExecutionModel.py feature enhancement request Open

depth framework

Difficulty 4/5 3-5 days Newbie friendliness 48/100

QuantConnect/Lean#9231 · 1 comment · 2 reactions · Opened Jan 19, 2026
Add TradeBuilder Strategy Support Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 25/100

QuantConnect/Lean#9225 · 1 comment · Opened Jan 15, 2026
[Library Upgrade] ray Open

bug library-request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#9222 · Opened Jan 14, 2026
[Library Upgrade] numpy and scipy Open

library-request

Difficulty 3/5 1-2 days Newbie friendliness 42/100

QuantConnect/Lean#9218 · 1 comment · Opened Jan 13, 2026
Add PeggedToMidpointOrder Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 45/100

QuantConnect/Lean#9206 · Opened Jan 7, 2026
Feature Request: Add XTS REST API Brokerage Integration for Indian Brokers Open

Brokerage depth

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/Lean#9164 · Opened Dec 29, 2025
.Net 10 support + Modernization Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

QuantConnect/Lean#9150 · 6 reactions · Opened Dec 21, 2025
Add Tradovate Brokerage Support for Futures Trading Open

Brokerage feature

Difficulty 4/5 3-5 days Newbie friendliness 42/100

QuantConnect/Lean#9136 · Opened Dec 17, 2025
Implements Autocomplete Open

feature

QuantConnect/lean-cli#602 · 6 comments · 3 reactions · 1 assignee · Opened Nov 10, 2025
Handles ".F" Suffix Coins Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

QuantConnect/Lean.Brokerages.Kraken#53 · Opened Oct 1, 2025
Implement Combo Order Type in Cross Zero Order Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

QuantConnect/Lean#9005 · 1 reaction · Opened Oct 1, 2025
Order Scheduling Support Open

depth feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/Lean#8977 · 1 reaction · Opened Sep 16, 2025
Backtest Report Contains Orders/Trades/Custom Charts Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8976 · Opened Sep 15, 2025
Downside Deviation in Backtest Statistics Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8965 · Opened Sep 9, 2025
Support Non-US Government Bond and Index Futures Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8960 · 1 comment · 2 reactions · Opened Sep 7, 2025
Bracket Order Support for LEAN/Alpaca Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

QuantConnect/Lean.Brokerages.Alpaca#40 · 1 comment · 2 reactions · Opened Sep 5, 2025
Exit Gracefully When Existing Session is Detected Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

QuantConnect/IBAutomater#98 · Opened Aug 27, 2025
Case handling for `Choice` help output (values forced to lowercase) Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

QuantConnect/lean-cli#588 · Opened Aug 25, 2025
Improve Importing Data / Streaming / CSV Examples Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

QuantConnect/Documentation#2139 · 1 reaction · Opened Aug 22, 2025
OptionFilterUniverse Expiration is confusing and inefficient Open

bug depth

Difficulty 4/5 3-5 days Newbie friendliness 48/100

QuantConnect/Lean#8932 · 3 comments · 2 reactions · Opened Aug 18, 2025
Missing numpy floats overloads Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

QuantConnect/quantconnect-stubs-generator#78 · Opened Aug 7, 2025
New Binance Crypto Future Collateral/Margin Rules Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8904 · 3 comments · Opened Jul 31, 2025
Implement FileFormat.PARQUET for SubscriptionDataSource Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8901 · Opened Jul 30, 2025
Add Daily & Hour with extended market hours Open

depth feature

Difficulty 3/5 1-2 days Newbie friendliness 35/100

QuantConnect/Lean#8900 · 4 comments · Opened Jul 30, 2025
Implement default custom data json reader Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/Lean#8874 · 4 comments · Opened Jul 15, 2025
Review the Data Analyser Class Open

QuantConnect/Documentation#2120 · 1 assignee · Opened Jul 11, 2025
Data types can define how they update security cache Open

depth feature

Difficulty 4/5 3-5 days Newbie friendliness 32/100

QuantConnect/Lean#8856 · 1 comment · Opened Jul 2, 2025
Make RandomDataGeneration parallel for performance gains Open

depth performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

QuantConnect/Lean#8852 · Opened Jun 25, 2025
Improve semantics of library organization Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

QuantConnect/lean-cli#579 · Opened Jun 24, 2025
Data Download Future Options by Ticker Open

bug feature

Difficulty 3/5 1-2 days Newbie friendliness 35/100

QuantConnect/lean-cli#574 · 1 comment · 1 reaction · Opened Jun 6, 2025
Auto Update Symbol Properties Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

QuantConnect/Lean.Brokerages.ByBit#34 · Opened May 30, 2025
Add Setting to Configure Live Feed Bar Release Delay Open

feature live-trading

Difficulty 4/5 3-5 days Newbie friendliness 45/100

QuantConnect/Lean#8798 · Opened May 26, 2025

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