Midday movers: Blackstone, Exxon, ADT & More By: CNBC.com News January 30, 2014 at 12:18 PM EST Take a look at some of Thursday's midday movers: Read More >> Related Stocks: ADT Corp Alexion Pharmaceuticals Blackstone Inc Caterpillar Citrix Systems Diageo Plc ADR Exxon Mobil Facebook Harman International Pitney Bowes Tesla, Inc. Twitter, Inc. United Parcel Service United States Steel Corp