Last week thousands of fintech developers scrambled to find a Yahoo Finance API replacement. Individual investors, startups, and even fortune 500 companies had taken advantage of this free service to obtain financial data like stock prices for their websites, intranets, and analytics applications.
Yahoo Probably Removed the Finance API for Financial Reasons
Yahoo hasn't disclosed why they canceled the API but we can be confident that money had everything to do with it. Yahoo is not a stock exchange nor is it a data provider. This means that Yahoo has to buy its stock data from at least one, if not several, data providers. When Yahoo contracted with these parties to obtain this data, their agreements included "redistribution rights".