Trading APIs come in handy here as they remove the emotions out of trading thus removing the emotional bias.Other popular trading setups would be ones which seek arbitrage opportunities – basically profiteering from price difference of a stock or instrument listed in two different markets
Big Data is large sets of information that is further growing in real time. APIs are interfaces that allow different applications to interact with each other. Trading API allows you to interact with trading systems and auto execute orders and get real time market data – price, volume, open interest, order updates etc.
Further, API based Trading Solutions are enabling auto execution of orders. Back in the day big data along with API based auto trading was deployed by HFT Firms (High Frequency Trading Firms) and investment banks. Now these are being increasingly adopted by retail traders to profit from the markets.
Auto trading based on signals generated from Trading systems have been completely changing how the stock markets are functioning and how Traders are making their trading decisions. Analysis from Big Data is helping traders look for trading opportunities and further helping them develop and backtest trading systems.
As a human trader one can maybe use 4-5 indicators/Setups to help look for trading opportunities but big data can totally change that.