Hey Streamlit Community! 
I built ThetaYield, a free financial tool for options traders executing the Wheel Strategy. It calculates real-time annualized return on collateral, downside margin of safety, and commission drag for Cash-Secured Puts (CSPs).
Live App: https://options-yield-calculator-54dyt3r6bzbqpelafbvdzx.streamlit.app/
GitHub Repo: GitHub - kinsonchan0828/options-yield-calculator · GitHub
Key Features
- Real-Time Data: Pulls live underlying stock prices and option chains via
yfinance. - Yield & Cushion Metrics: Computes annualized yield (AROC), raw premium yield, and strike distance buffer.
- Interactive Visualizations: Generates dynamic payoff diagrams using
Plotly. - Commission Drag Accounting: Evaluates net yield after broker contract fees.
Built with Python, Streamlit, yfinance, plotly, and pandas. I’d love to hear your feedback or suggestions for new features!