1. A computerized method of tracking investment registrations, comprising: accessing a first database containing data associated with investment registrations of entities, wherein the data is organized as a series of individual filings; for each of plurality of the entities that have shelf investment registrations: determining, by a computer, if a particular entity has filed a shelf filing or a shelf takedown; retrieving, by the computer, data from the first database associated with the shelf filing or shelf takedown of the particular entity to identify an amount of the shelf filing or an amount of the shelf takedown; determining if the filing of the particular entity is a shelf filing or a shelf takedown; in response to determining that the filing of the particular entity is a shelf filing, selecting the particular entity associated with that filing, wherein the particular entity comprises an issuer associated with the filing; in response to determining that the filing of the particular entity is a shelf takedown, determining, by a computer, a registration of the shelf takedown; tracking, using a computer, shelf investment registrations of the particular entity by organizing the retrieved data associated with the shelf filing or shelf takedown of the particular entity so that a computer performs at least one of summing the shelf filings and subtracting the shelf takedowns in order to determine a total shelf capacity of a particular entity; and storing the total shelf capacity in a second database so that a searcher can query the second database to determine the total shelf capacity of the entities.