---
name: yfinance-9c58bc774d50
description: "Yahoo Finance market data downloader. Stock prices, options chains, fundamentals, dividends, splits, earnings, institutional holders, and financial statements. Quick data ingestion for quant research and backtesting."
tags: [yahoo-finance, market-data, stocks, etfs, financial-data, api, zorai]
---
## Overview

yfinance downloads Yahoo Finance market data: stock prices, options chains, fundamentals, dividends, splits, earnings, institutional holders, and financial statements. The fastest path from ticker symbol to pandas DataFrame for quant research and backtesting.

## Installation

```bash
uv pip install yfinance
```

## Price History

```python
import yfinance as yf

msft = yf.download("MSFT", start="2024-01-01", end="2024-12-31")
print(msft.head())
```

## Fundamentals & Financials

```python
ticker = yf.Ticker("AAPL")
info = ticker.info
print(f"Market cap: {info['marketCap']:,}")
print(f"PE ratio: {info['trailingPE']}")
print(f"Dividend yield: {info.get('dividendYield', 0)*100:.2f}%")
print(ticker.balance_sheet)
print(ticker.financials)
```

## Options

```python
opt = ticker.option_chain(ticker.options[0])
print(opt.calls[["strike", "lastPrice", "impliedVolatility", "volume"]].head())
print(opt.puts[["strike", "lastPrice", "impliedVolatility", "volume"]].head())
```

## References
- [yfinance GitHub](https://github.com/ranaroussi/yfinance)

---
Source attribution: mkurman
Original project: https://github.com/mkurman/zorai/blob/d06ee7597049567dab92db22d41b2764cf89094a/skills/scientific-skills/yfinance/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 zorai contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: mkurman
Original project: https://github.com/mkurman/zorai/blob/d06ee7597049567dab92db22d41b2764cf89094a/skills/scientific-skills/yfinance/SKILL.md
Attribution basis: Source repository record

Fields of work: Data & Analytics, Finance & Accounting, Marketing, Product Management
Roles: Data Analyst, Financial Analyst, Growth Marketer, Marketing Analyst, Product Manager
Specialties: API
Tools: Yahoo Finance
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: f46e49286b63076b758cd9d29d52d20efba5142dbb755e0043fa5e482591d576