WASHINGTON—Stock exchanges intend to fire the contractor they hired to build a data warehouse for all U.S. stock-market activity, the latest sign of trouble for a project designed to detect trading fraud and causes behind wild swings in prices. People familiar with the matter said the exchanges have lost confidence in Thesys Technologies LLC, a startup hired in 2017 to build the repository, known as the Consolidated Audit Trail. The Securities and Exchange Commission told the exchanges to create the database so it would have...

Source: Wall Street Journal January 31, 2019 17:43 UTC