Stock Market Fundamental and Historical Data Feed API 761,360,272 Financial Data Points and Counting As of Mar 16, 2020 We provide FUNDAMENTAL data, INTRADAY and DAILY historical stock prices for stocks, ETFs, Mutual Funds and Bonds all around the world. World Trading Data provides real time and historical stock data in JSON or CSV format through our API endpoints. Obtain real time prices for up to 500 stocks per request, or return over 30 years of historical data in under a second. Our services are 100% free to sign up to so you can develop amazing apps. API for Stock Data. Quandl offers a simple API for stock market data downloads. Our daily data feeds deliver end-of-day prices, historical stock fundamental data, harmonized fundamentals, financial ratios, indexes, options and volatility, earnings estimates, analyst ratings, investor sentiment and more.