Abstract: Systems, methods, and computer program products for managing an auction. A pool comprised of a first plurality of inventory items that are auction eligible is determined from an inventory item network based on inventory controls. A reference index is determined and assigned to each of the first plurality of inventory items in the pool. The first plurality of inventory items are filtered based on at least one inventory item characteristic to define a second plurality of inventory items. The second plurality of inventory items are filtered based on at least one constraint and the reference index associated with each of the second plurality of inventory items to determine an order in which at least some of the second plurality of inventory items are made available for bidding in the auction.