options-chain-yfinance.ps1 $chains = chart-puts SPY 2023-05-19, 2023-06-16, 2023-07-21, 2024-03-15, 2024-12-20 $chains = chart-puts-chg SPY 2023-05-19, 2023-06-16, 2023-07-21, 2024-03-15, 2024-12-20 Large point indicates significant open interest.
