itamarzand88/awesome-agent-conventions/zorai-yfinance

Claude Code and agent skill by itamarzand88/awesome-agent-conventions

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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.

Install

npx vskill@latest install itamarzand88/awesome-agent-conventions/zorai-yfinance

SKILL.md

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

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