Unless a conventional bank licensee's exposure to a particular risk factor is insignificant, the internal models approach, in principle, require conventional bank licensees to have an integrated risk measurement system that captures the broad risk factor categories (i.e., interest rates, exchange rates (which includes gold), equity prices and commodity prices, with related options volatilities being included in each risk factor category). Thus, conventional bank licensees which start to use models for one or more risk factor categories, over a reasonable period of time, must extend the models to all their market risks.