QuantConnect allows anyone to develop, test and execute trading algorithms using an ultra-fast cloud simulator, online IDE and high resolution financial data. By democratizing these tools, QuantConnect levels the playing field for the masses. The company distributes algorithms to brokerages, and allows hedge funds to subscribe to the trade signals.

Numerai manages an institutional grade long/short global equity strategy for the investors in its hedge fund. The company transforms and regularizes financial data into machine learning problems for our global community of data scientists.

Polychain Capital is a hedge fund that specializes in the trading of blockchain-based assets.

Quantiacs connects user-generated quantitative trading algorithms to capital. Quantiacs provides a free open source Python environment and free historical data.

Quantopian is a browser-based algorithmic trading platform with the power of cutting-edge data science. The platform combines the flexibility to instantly integrate any data with the simplicity to get started developing in minutes. Quantopian makes the full potential of quantitative trading available to investors by giving them access to the power of data science. Quantopian gives people access to the tools, capabilities and community they need to create and optimize their own trading algorithms in an open and transparent environment, and then put those algorithms to work in the live market. Quantopian is also an engaged community where people can discuss concepts, processes and performance and learn from peers. The result is a better way to understand – and profit from – quantitative trading. Quantopian is headquartered in Boston.