Abstract: Various user interfaces are disclosed. A polling user interface enables users to predict asset prices. A price prediction user interface displays historical price data for an asset overlaid on an indication of the corresponding distributions of price predictions for the asset (e.g., as provided by users via the polling user interface). A derivative-definition user interface enables a user to define the parameters for a derivative transaction related to one or more assets. The derivative-definition user interface may also enable the user to request implementation of the transaction (e.g., by submitting the transaction parameters to a trading platform). An order placement user interface may enable a user to define and place an order for a derivative. The order placement user interface may also provide intra-trade updates regarding process of the order (e.g., notifications of executed fills and price actions).