Abstract: A system and method for the electronic trading of investment vehicles, such as stocks, bonds, options, commodities, stock and futures index contracts, and the like, is disclosed. The system and method provide a graphical user interface having a versatile and efficient market depth tool with a dynamic price axis for executing trades. The tool facilitates the display of and the rapid placement of trade orders within the market. The system provides for user initiated functionality to control, among other things, the manner in which the dynamic price axis moves in response to market conditions.