An instrument transaction system for generating and executing an instrument transaction for a target instrument between an instrument transaction seller and an instrument transaction purchaser, the target instrument having an instrument value, the instrument value being unknown before a release date and the instrument value being known after the release date, the system comprising: a computer processor coupled to a memory, wherein the computer processor is programmed to process an instrument transaction by: obtaining a first set of rules that define as an output the instrument transaction as a function of the target instrument of a target entity and a set of transaction features, the instrument transaction comprising a set of settlement rules and execution rules and the transaction features comprising a start date, the instrument value, and a release date wherein the start date is the date preceding the release date and the release date is the date at which the instrument value is available; obtaining the target instrument and the set of transaction features; generating the instrument transaction by evaluating the target instrument and the set of transaction features against the first set of rules; and executing the instrument transaction by: receiving the instrument value; determining a settlement value by evaluating the instrument value against the set of settlement rules of the instrument transaction; and sending the settlement value based on the execution rules of the instrument transaction.