Democratizing Finance, Empowering Individuals

Since we were founded in 2011, QuantConnect has strived to empower individuals. It has been built into our core motto “Democratizing Finance, Empowering Individuals”. We are motivated to provide powerful investment opportunities for investors and the best technology possible available for quants. It is a difficult challenge but one we push through every day. Some […]


Scheduled Events

Scheduled events allow you to trigger code blocks for execution at specific times according to rules you set. This feature helps coordinate your algorithm activities and perform analysis at regular intervals; while letting the trading engine take care of market holidays. The scheduling is set with two rules: the DateRules and TimeRules classes. The schedule […]

Desktop Charting with LEAN

With a few configuration changes you can get desktop charting in LEAN with a HTML5 interface very similar to the one you see in This gives you better visual feedback on your strategy and allows you to improve faster. This tutorial guides you through configuring a desktop charting environment with LEAN. Local charting (and […]

Collaborating in QuantConnect

Collaborating is a powerful feature of QuantConnect which allows up to 10 team members to work on a project at the same time. This can be useful when a team of specialists collaborates to build a great strategy. The project creator holds the master copy of the project and can add team members and control […]

Introducing The Co-Pilot: Your Coding Companion

We’re happy to announce the release of the Co-Pilot; a rich automated documentation generator built to give you relevant hints while you’re building your strategy. With deep API’s it is impossible to memorize all the methods available; and time consuming to constantly search the documentation. As a coding companion, the co-pilot can inspect the types […]

Free Streaming Live Data with IEX – LEAN Release Notes v2.3.0.3

This release adds the IEXDataQueueHandler allowing LEAN users to stream free US equity trades to their strategy; along with numerous bug fixes to the OANDA and FXCM brokerage implementations. Additional regression algorithms were added to automate testing of daily data algorithms. The Interactive Brokers connection logic was also made more intelligent to fail quickly when […]


Generic Data Sourcing and Caching – Release Notes v2.3.0.2

This release adds a generic data sourcing feature along with abstraction of the data caching. This allows different configurations to be setup independent of physical files. In addition there were dozens ofbugs fixes in LEAN to improve its stability and consistency across backtesting and live trading. There were no breaking changes in regression tests or […]


Release Notes – LEAN v2.3.0.1

This release fixed minor bugs in LEAN to improve its stability and consistency across backtesting and live trading. There were no breaking changes in regression tests or the API of LEAN. Features Update AlgoSeek data converter to accept input file mask to only convert specific source files. Added IsAssignable to detect assignment orders in backtesting*. […]


Options and Futures Trading on QuantConnect

We are very excited to announce the beta launch of options and futures trading on QuantConnect! Through the open-source platform LEAN, algorithmic trading has never been so accessible to investors. The new asset classes tie into our existing offering of Equities, FOREX and CFD products bringing us to a total of five asset classes. We […]

Our Answer to NYSE Eliminating Stop Orders

From February 26th investors will no longer be able to use Stop or Good Till Cancelled order types on the NYSE, according to a recent press release from Reuters. Typically Stop Market orders are used to place a market order when the stock exceeds a trigger price. On August 24th, 2015 many investors had their […]