Abstract: An inventory management system for managing inventory ownership in a shared inventory space is described. The system includes receivers configured to receive data from sources external to the inventory management system. Transmitters are configured to transmit data to sources external to the inventory management system. A bundle generation is configured to receive transfer data from a first user via the one or more receivers indicating a group of items to be made available for a transfer of ownership. The transfer of ownership of the group of items is to be made as a single transaction. The system processes the received transfer data and generates a bundle data record of data parameters based on the transfer data. A transaction management processor provides information identifying available groups of items available for transfer of ownership and a transaction fulfilment processor provide the item data to the transaction management processor.