In a stock rebalancing method, separate inventory holding clients are registered, each as individual publishers of inventory level data, and further, separate transporter clients also are registered each as individual publishers of transport capacity. Then, an indication is received from one of the inventory holding clients, of an overstock condition of a specified item. Contemporaneously, an indication is received from another of the inventory holding clients of an understock condition of the specified item. In response, one of the transporter clients is identified as indicating excess capacity sufficient to bear transport of the specified item in a quantity indicated by the understock condition, the clients are messaged indicating the conditions, and the identified transport client is directed to transport the specified item in the indicated quantity from the one of the inventory clients indicating the overstock condition to the one of the inventory holding clients indicating an understock condition.