Shares in Aviva leapt on Monday following reports which emerged over the weekend which are saying the insurance giant is set to sell or wind down between 10 and 15 of its 58 businesses. Barclays, the bank which last week was given a £290m fine for manipulating interbank lending rates, was another high riser today after revealing that its Chairman Macrus Agius has resigned. After numerous calls for CEO Bob Diamond to follow in Agius's footsteps, Investec analyst Ian Gordon said this morning that investors should "back Bob" and take advantage of the stock's recent underperformance. Royal Bank of Scotland (RBS) was flat after Oriel Securities downgraded its rating on the stock to 'hold'. It was revealed at the weekend that the bank had sacked several traders last year over the alleged manipulation of LIBOR. Serco, the international services company, rose after it signed an agreement to dispose of most of its operations in Germany in a transaction with the local management team. FTSE 100 - RisersAviva (AV.) 282.30p +3.56%Petrofac Ltd. (PFC) 1,435.00p +3.39%Barclays (BARC) 167.85p +3.07%WPP (WPP) 794.50p +2.78%Whitbread (WTB) 2,079.00p +2.51%Schroders (SDR) 1,366.00p +2.25%Standard Chartered (STAN) 1,415.50p +2.24%Eurasian Natural Resources Corp. (ENRC) 424.50p +2.19%Amec (AMEC) 1,023.00p +2.10%Weir Group (WEIR) 1,561.00p +2.03%FTSE 100 - FallersAdmiral Group (ADM) 1,159.00p -2.77%British Sky Broadcasting Group (BSY) 687.00p -1.36%Evraz (EVR) 257.40p -1.27%Capital Shopping Centres Group (CSCG) 318.80p -0.99%International Consolidated Airlines Group SA (CDI) (IAG) 158.00p -0.94%Xstrata (XTA) 792.80p -0.73%Pearson (PSON) 1,258.00p -0.63%Next (NXT) 3,183.00p -0.50%Vedanta Resources (VED) 908.00p -0.44%Smith & Nephew (SN.) 635.00p -0.39%NR