It's good day for blue chips despite the problems in Greece.The number of FTSE 100 constituents in the red is in single figures.Prudential is one of them. It announced today that it would price its $20bn rights issue on 5 May while also seeking a listing in Singapore and Hong Kong to encourage some Far East backing for the massive cash call. In a case 'having your cake and eating it' investors are buying British Airways and Thomas Cook as flights from Europe resume and are also investing in cruise operator Carnival, ostensibly because it will have benefited from the grounding of flights for much of this week. Royal Bank of Scotland has received an upgrade from BarCap, which suggests RBS has a "more credible strategy for balance sheet shrinkage" than state-controlled rival Lloyds Banking. BarCap has raised its rating on RBS to overweight and doubled its price target to 70p.FTSE 100 - RisersCarnival (CCL) 2,831.00p +5.16%Wolseley (WOS) 1,651.00p +4.96%InterContinental Hotels Group (IHG) 1,119.00p +4.09%Kingfisher (KGF) 247.10p +3.82%British Airways (BAY) 233.70p +3.64%Royal Bank of Scotland Group (RBS) 55.60p +3.25%Thomas Cook Group (TCG) 263.30p +2.81%Home Retail Group (HOME) 294.50p +2.26%FTSE 100 - FallersARM Holdings (ARM) 254.30p -1.78%Aviva (AV.) 368.50p -1.47%Prudential (PRU) 539.00p -1.19%Bunzl (BNZL) 764.00p -0.52%RSA Insurance Group (RSA) 122.40p -0.41%Standard Life (SL.) 198.80p -0.40%Legal & General Group (LGEN) 88.75p -0.28%Severn Trent (SVT) 1,197.00p -0.17%