data-yf

What problem does it solve?

Provides access to unofficial Yahoo Finance endpoints to retrieve equity quotes, historical OHLCV price series, full options chains with Greeks, financial statements, and analyst metrics when official APIs lack options data or for quick cross-checks without an API key.

Core Features & Use Cases

• Real-time Quotes & Batch Requests: Single-symbol and multi-symbol snapshots for monitoring and screening market movers.
• Historical Prices: OHLCV series with intervals from 1 minute to 3 months for backtesting, charting, and time-series analysis.
• Options Chains with Greeks: Full expiration lists, per-expiration call and put chains, strikes, implied volatilities, and Greeks for options strategy research.
• Financial Statements & Analyst Data: Combined annual and quarterly income, balance sheet and cash flow data plus analyst targets and upgrade/downgrade history for fundamental analysis.
• Use Case: Use the options tools to build an implied volatility surface for a stock, cross-check financial statement numbers against a primary data provider, and fetch batch quotes for portfolio revaluation.

Quick Start

Fetch a 1-year daily historical price series and the latest options chain for AAPL to compare implied volatilities and review analyst price targets.