Temporary power group Aggreko climbed into the top spot after it said it expected full year profits to be in line with market expectations despite the absence of a one-off lift from the London Olympics.Also on the rise was Randgold Resources after boss Mark Bristow said the miner is exploring further opportunities in Cote d'Ivoire. Randgold owns and operates Côte d'Ivoire's largest gold mine at Tongon, which has achieved more than 600,000 ounces of gold since it started production at the end of 2010. Investors also welcomed the news that security giant G4S has rejected a £1,550m offer from Charterhouse Capital Partners for its cash solutions business, saying that that the proposal "fundamentally undervalues the business and its prospects" and on the basis of its "strategic importance" to the company as a whole. Pharmaceuticals giant AstraZeneca was another strong riser following an upgrade from Bank of America, whose Analyst, Sachin Jain, upgraded the stock from 'underperform' to 'neutral'. Sector peer GlaxoSmithKline was also making decent gains. Meanwhile, InterContinental Hotels Group was firmly lower after it disappointed investors with the news that its revenue per available room (RevPAR) for its US and Americas brands in the nine months ended September 30th grew 4.5%, driven predominantly by a 2.9% increase in rates. Tullow Oil was also in the red after it temporarily suspended all operations in Block 10BB and Block 13T in Northern Kenya due to labour unrest. The company said its decision to suspend exploration and appraisal operations was taken to prevent further escalation of strikes while it tries to resolve the issue.Barclays was leading the banking sector lower, with Lloyds and RBS also registering losses. RBS is making headlines today ahead of its expected re-launch this week - reforms are expected to include the splitting of the lender into a 'good bank' and a 'bad bank'. FTSE 100 - RisersAggreko (AGK) 1,603.00p +5.67%Randgold Resources Ltd. (RRS) 4,870.00p +4.98%AstraZeneca (AZN) 3,289.50p +1.26%GlaxoSmithKline (GSK) 1,622.50p +1.12%Vedanta Resources (VED) 1,079.00p +1.03%Whitbread (WTB) 3,400.00p +0.83%Hargreaves Lansdown (HL.) 1,164.00p +0.78%SABMiller (SAB) 3,275.50p +0.78%Associated British Foods (ABF) 2,149.00p +0.75%Reckitt Benckiser Group (RB.) 4,814.00p +0.71%FTSE 100 - FallersBarclays (BARC) 262.10p -2.17%InterContinental Hotels Group (IHG) 1,825.00p -2.14%GKN (GKN) 365.00p -1.93%easyJet (EZJ) 1,304.00p -1.88%Tullow Oil (TLW) 963.00p -1.58%Wolseley (WOS) 3,251.00p -1.51%Mondi (MNDI) 1,100.00p -1.35%BG Group (BG.) 1,238.00p -1.32%ARM Holdings (ARM) 970.50p -1.27%Meggitt (MGGT) 554.50p -1.25%NR