Finnhub is a financial data provider focused on making market information accessible through real-time APIs and related tools. Its services support developers, investors, and businesses building financial models, trading systems, and applications. Finnhub offers RESTful APIs and WebSocket access to stock, currency, and cryptocurrency data, alongside market coverage that includes US and international exchanges, forex brokers, crypto exchanges, and corporate bonds.

The platform provides global company fundamentals, including financial statements, dividends, revenue segments, and key performance indicators. Users can also access analyst estimates, earnings notifications, ETF and mutual fund profiles and holdings, and historical market data. Alternative data offerings include earnings call transcripts and downloadable audio, company presentations, news and social media sentiment, ESG information, congressional trading, and lobbying data. Finnhub also supplies technical indicators, pattern recognition, and ownership information.

Its data extends across decades for several categories, supporting historical research and analysis. Finnhub offers a free API tier and provides documentation, pricing information, spreadsheet integrations, widgets, and enterprise services. Enterprise offerings include scalable infrastructure and an uptime service-level agreement.