Data search group Autonomy is the top riser in the FTSE 100 after completing the $380m acquisition of assets from Iron Mountain. WPP, the advertising giant, is heading higher after acquiring a 70% stake in Grïngo Publicidade, a leading digital agency in Brazil.Making moderate gains is satellite broadcaster BSkyB on reports that the £7.8bn takeover by Rupert Murdoch's media conglomerate News Corp has taken one step nearer to the finish line after regulators "agreed in principle" to grant clearance. Sector peer ITV is among the worst performers.Meanwhile, Mexican precious metals miner Fresnillo is a heavy faller, tracking silver futures lower.Oil firm Cairn Energy is off the mark despite commencing drilling on two wells in its West Greenland offshore drilling campaign.---BCFTSE 100 - RisersAutonomy Corporation (AU.) 1,816.00p +3.48%Vodafone Group (VOD) 163.85p +1.87%Resolution Ltd. (RSL) 304.40p +1.77%British Land Co (BLND) 591.50p +1.72%Johnson Matthey (JMAT) 2,043.00p +1.49%WPP (WPP) 741.50p +1.30%Hammerson (HMSO) 479.80p +1.29%International Consolidated Airlines Group SA (IAG) 237.00p +1.07%BG Group (BG.) 1,343.50p +1.02%Admiral Group (ADM) 1,700.00p +0.95%FTSE 100 - FallersSerco Group (SRP) 580.50p -2.85%Fresnillo (FRES) 1,397.00p -2.17%InterContinental Hotels Group (IHG) 1,223.00p -1.92%Severn Trent (SVT) 1,476.00p -1.14%TUI Travel (TT.) 227.80p -1.00%3i Group (III) 281.90p -0.91%BT Group (BT.A) 197.70p -0.90%Essar Energy (ESSR) 435.00p -0.89%Carnival (CCL) 2,374.00p -0.88%ITV (ITV) 69.30p -0.86%