The invention provides a user interface, such as used by an electronic trading hub. The interface includes a representation that describes instances in which a participant has won some units, but less than the number of items initially bid on. The representation of this partial win is displayed on web pages that present information to a user. Another representation shows start and end times for at least some of the markets in which the user is currently participating, and the start and end times for future markets. Color-coding of temporal events may also be included in the graphical representation. A representation of activities occurring in markets owned by a user is generated and displayed. Such representations useful to commercial entities which take positions as both buyers and sellers. Another representation identifies which type of market is referred to such as English auctions, RFBs (request for bids), Dutch auctions and others.