QuantConnect is the world\\'s leading open-source, multi-asset algorithmic trading platform, chosen by thousands of funds and more than 300,000 investors.

QuantConnect provides a free algorithm backtesting tool and financial data so engineers can design algorithmic trading strategies. We are democratizing algorithm trading technology to empower investors.

QuantConnect is an open-source, community-driven algorithmic trading platform. Our trading engine is powered by LEAN, which supports C# and Python languages.

QuantConnect is a multi-asset algorithmic trading platform chosen by more than 275,000 quants and engineers.

QuantConnect is a multi-asset algorithmic trading platform chosen by more than 275,000 quants and engineers.

QuantConnect is an open-source, community-driven algorithmic trading platform. Our trading engine is powered by LEAN, a cross-platform, multi-asset technology that brings cutting-edge finance to the …

QuantConnect is a multi-asset algorithmic trading platform chosen by more than 275,000 quants and engineers.

Start Your QuantConnect Journey. Learn to use the QuantConnect Platform and explore our features.

LEAN is the open-source algorithmic trading engine powering QuantConnect. Founded in 2012 LEAN has been built by a global community of 180+ engineers and powers more than 300+ hedge funds …

The Lean Engine is an open-source algorithmic trading engine built for easy strategy research, backtesting, and live trading.