QuantConnect is an open-source algorithmic trading platform that provides its community of over 220,000 quants with access to financial data, cloud computing, and a coding environment where they can design algorithms. Users develop trading strategies in Python and C#, backtest them, and then deploy them into their brokerage trading accounts! We are a truly global company with users from all over the world who have created more than 8M algorithms and live traded more than $12B in notional volume.