Example methods, apparatus, and computer readable storage media are described and disclosed. An example method includes depicting a strategy node in a graphical user interface presented by a computing device. The strategy node represents a trading strategy associated with two or more tradeable objects. The example method includes generating a graphical connector between the strategy node and one of a plurality of contract nodes including at least a first contract node and a second contract node. Each contract node represents a contract associated with one of the tradeable objects. The example method includes repositioning, in response to an input received via the graphical interface, an endpoint of the graphical connector from the first contract node specified by the trading strategy to the second contract node. The example method also includes generating an updated trading strategy based on the trading strategy and the second contract node.