option-chain

Fetch option chain data from Yahoo Finance for a specific expiration date.

Instructions

Note: If uv is not installed or pyproject.toml is not found, replace uv run python with python in all commands below.

First, get available expiration dates:

uv run python scripts/options.py SYMBOL --expiries

Then fetch the chain for a specific expiry:

uv run python scripts/options.py SYMBOL --expiry YYYY-MM-DD

Arguments

• SYMBOL - Ticker symbol (e.g., AAPL, SPY, TSLA)
• --expiries - List available expiration dates only
• --expiry YYYY-MM-DD - Fetch chain for specific date

Output

Returns JSON with:

• calls - Array of call options with strike, bid, ask, volume, openInterest, impliedVolatility
• puts - Array of put options with same fields
• underlying_price - Current stock price for reference

Present data as a table. Highlight high volume/OI strikes and notable IV levels.

Dependencies

• pandas
• yfinance

Timezone

All timestamps and time-based calculations must use the America/New_York timezone. All JSON output must include generated_at (NY time string) and data_delay fields.