Portfolio Correlation and Margin Risk Calculator
Computes the historical Pearson correlation between any set of instruments and the combined margin your account would need to hold all of them at once, as a percentage of your equity. Runs natively in MetaTrader 5 with no external libraries, no Python, and no AI — set your symbol list and lot sizes as inputs and it reports the full matrix in the Experts tab and on the chart, refreshing on a timer.