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QuantConnect is a browser-based algorithmic trading and investing backtesting platform. In finance, a backtester is a tool that is used to test out your ideas for an investment strategy. QuantConnect uses PubNub to update charts in real-time and show backtesting progress as it runs.
“It’s fairly demanding because there is a lot of data to show. There are a lot of charts, and there are a lot of orders to process. Some users generate thousands of orders with hundreds of stocks.” Jared Broad, co-founder of QuantConnect.