01 / FINANCE
Financial Calculator
An open-source, offline financial calculator with the keystroke model of a classic business calculator, rebuilt with the features I always wished the physical one had.
- Undo, history, copy/paste, and a Define key that explains every function
- TypeScript engine with automated reference tests
- Runs in the browser and as an iPhone app
02 / INVESTING
Portfolio Optimizer
A web app for mean-variance portfolio optimization and walk-forward backtesting, built so the results can't cheat by peeking at future prices.
- Max-Sharpe, min-volatility, and efficient-frontier portfolios
- Walk-forward backtests with transaction costs and no lookahead
- Ledoit-Wolf shrinkage covariance; Yahoo Finance or CSV data
A discounted-cash-flow research pipeline and cost-of-capital dashboard that pulls real market and fundamentals data to estimate CAPM and WACC.
- WRDS / CRSP, Compustat, and FRED data connections
- Web dashboard for ticker, date range, and benchmark selection
- Jupyter notebooks for the underlying analysis
A desktop visual-learning workbench: ask for a 3D model, chart, or diagram, click on any part of it, and ask a follow-up about just that piece.
- Interactive 3D scenes, charts, and diagrams drawn by an AI tutor
- Select a part to carry its context into the next question
- Save and reopen lessons with their visuals and conversation