The share price of Barclays rose strongly on Thursday amid speculation the bank could announce thousands of further job cuts in its investment banking division as part of a corporate shake-up. Barclays released a statement today which announced that it would update shareholders next month on its strategy "to deliver improved and sustainable returns and growth for shareholders". The bank said this would include a "positioning" of the investment bank.Banking peers Lloyds, RBS and HSBC were also higher in afternoon trade.Heading the other way was beverages group Diageo after an unexpected sales decline in the third quarter due to weakness across several emerging markets. The company, famous for brands such as Captain Morgan, Smirnoff and Guinness, said that organic net sales fell by 1.3% in the three months to March 31st. Sentiment was also dampened by disappointing guidance from French spirits maker Remy Cointreau.RSA Insurance gained after selling off its Baltics and Polish businesses as newly-appointed Chief Executive Stephen Hester attempts to turn around the embattled insurer.Royal Dutch Shell edged higher following an exploration discovery offshore Malaysia. The Rosmari-1 well, located 135km offshore in Block SK318, encountered more than 450 metres of gas column after drilling to a total depth of 2,123 metres.After a solid rise on Wednesday, fashion group Burberry was pulled back after Credit Suisse said it expected profit growth to "take a break" this year. "As much as we like Burberry's superior long-term top-line story, we see group margins under pressure in the next two years, which should put a lid on the shares," the bank said.Supermarket stocks were under the weather today with Tesco, J Sainsbury and WM Morrison trading in the red.FTSE 100 - RisersBarclays (BARC) 248.20p +4.48%ITV (ITV) 186.60p +3.67%Whitbread (WTB) 4,034.00p +3.44%ARM Holdings (ARM) 961.50p +3.17%St James's Place (STJ) 781.50p +3.10%Schroders (SDR) 2,529.00p +3.01%Barratt Developments (BDEV) 375.30p +2.82%International Consolidated Airlines Group SA (CDI) (IAG) 406.00p +2.73%Lloyds Banking Group (LLOY) 74.61p +2.40%RSA Insurance Group (RSA) 94.75p +2.32%FTSE 100 - FallersDiageo (DGE) 1,826.00p -3.89%Fresnillo (FRES) 862.00p -2.49%Tesco (TSCO) 288.00p -1.97%Sainsbury (J) (SBRY) 314.90p -1.78%Burberry Group (BRBY) 1,445.00p -1.43%Antofagasta (ANTO) 834.50p -1.36%Unilever (ULVR) 2,588.00p -1.30%British American Tobacco (BATS) 3,381.50p -1.00%Tullow Oil (TLW) 867.50p -0.91%Aggreko (AGK) 1,491.00p -0.73%BC