http://blogs.technet.com/b/dataplatforminsider/archive/2011/06/03/fourth-largest-us-stock-exchange-direct-edge-looks-to-sql-server-parallel-data-warehouse-for-big-data-needs.aspx

• Recent tests on their data showed dramatic gain in performance, with up to 163 times improvement in query performance and data loading speeds of up to 1 TB per hour
• In addition, their testing data shows the solution generates reports in under 15 minutes, for what used to take over four hours

Also posted on information week - http://www.informationweek.com/news/software/info_management/229900133