easyJet was a high riser after Citi increased its target price of the low-cost airline from 1330p to 1450p and reiterated a 'buy' recommendation on Monday. British multinational semiconductor and software design company ARM Holdings advanced after Investec upgraded the stock from 'hold' to 'buy' and lifted its target price from 955p to 1,000p, saying that fundamentals still remain strong despite the recent sell-off.Rexam, on the other hand, retreated after the maker of beverage cans issued a profit warning following a sluggish start to the year.Oil services company Petrofac slipped after saying it only expected modest growth for the year.Imperial Tobacco Group declined as Barclays reissued its 'equal weight' rating in a report released on Tuesday.FTSE 100 - RisersExperian (EXPN) 1,130.00p +3.96%easyJet (EZJ) 1,249.00p +3.31%ARM Holdings (ARM) 783.50p +3.30%Aviva (AV.) 329.90p +3.09%GKN (GKN) 290.60p +3.01%Weir Group (WEIR) 2,094.00p +2.85%CRH (CRH) 1,291.00p +2.54%Aberdeen Asset Management (ADN) 357.70p +2.52%SABMiller (SAB) 3,087.00p +2.52%HSBC Holdings (HSBA) 671.80p +2.47%FTSE 100 - FallersRexam (REX) 441.90p -4.99%Petrofac Ltd. (PFC) 1,190.00p -3.57%Whitbread (WTB) 2,876.00p -1.13%Imperial Tobacco Group (IMT) 2,259.00p -0.83%British Land Co (BLND) 550.50p -0.81%Randgold Resources Ltd. (RRS) 4,058.00p -0.71%Severn Trent (SVT) 1,620.00p -0.49%National Grid (NG.) 715.50p -0.28%Anglo American (AAL) 1,295.00p -0.19%SSE (SSE) 1,468.00p -0.14%RD