NOTE: This tool is not meant to be investment advice. It is a demo anyone can use to test the universal harmonic application of THD to the S&P 500 (SPY).
THD Harmonic Reversal System
Upload an end-of-day CSV for a single symbol with columns:
Date, Open, High, Low, Close
The engine will run the THD Trading system and compare it to
buy & hold over the same window.