1. A computer method for searching stock documents containing non-word-based data, comprising the computer executed steps of: (a) collecting a group of stock documents to form a collection of stock documents; (b) dividing each document in said group of collected documents into a series of elements of same type, each element of said series of elements is a time scale in stock document data; (c) defining a plurality of non-word-based token patterns; (d) tokenizing said documents by matching said series of elements against said plurality of defined non-word-based token patterns to generate a collection of tokens for each of said documents, and providing a name for each of said tokens; (e) combining the collections of tokens for said documents into a master collection of tokens; (f) searching for stock documents in said collection of documents that have the same token names as a query or a combination of queries, by searching said query or queries in said master collection of tokens, to provide a plurality of matching documents with respective scores; and (g) displaying matching documents in the order of their matching scores.