Methods and systems for generating a supply index indicative of a quality of available supply of merchant promotions

A method, apparatus, and computer program, each configured for gauging the health or quality of available supply, are provided. An exemplary method for generating a supply index indicative of a quality or health of supply by calculating and aggregating a supply metric calculated from a perspective of each of a plurality of individual customers to identify those locations where an increase in supply would most positively impact value to customers comprises identifying a location of a user, identifying at least a portion of each of one or more renderable data objects available to a user located at the location, applying a first weight to each of the portion of each of the one or more renderable data objects, calculating a total of each of the weights, applying a coverage cap to determine a capped total, and generating a supply index comprised of aggregated capped totals.