The Spread Matrix RTX extension is designed to automatically compute the optimal number of contracts or shares for each component of a spread or pair. For example, the Spread Matrix may recommend trading 11 contracts of ES against 6 contracts of NQ when trading an ES-NQ pair in order to maintain a good balance between the 2 (or some multiple of the 11 and 6). The calculation takes into account the volatility, point value, and (optionally) exchange rate of each instrument.