Technological modernization of the SEC was a Cox priority throughout his tenure. He introduced new technology for investor disclosure, compliance analytics, nationwide investigative work sharing, and management of funds recovered for investors. In August 2008 he rolled out the future replacement of the SEC's forms-based disclosure database, called EDGAR, with a new interactive disclosure system using computer-tagged data in the eXtensible Business Reporting Language (XBRL). The new system was designed to let future investors easily search, sort, and recombine information to generate reports and analysis from hundreds of thousands of companies and millions of forms. Under Cox the SEC oversaw the creation of a taxonomy of over 11,000 XBRL data tags that catalog every element of U.S. Generally Accepted Accounting Principles. In 2008 the Commission issued rules requiring all publicly traded companies and mutual funds in the United States to tag their financial information.