Tullow Oil's share price was rising strongly on Tuesday, supported by a 'buy' call from Liberum, which downplayed the recent sell-off in the shares.The broker said that results from two "basin-opening wells" in Kenya should be released in the next three months and would be catalysts for the stock, "but stable oil prices may be required before investor interest returns".United Utilities was lifted by Deutsche Bank, which reiterated its 'buy' rating on the stock and raised its target price from 980p to 1,030p.Shares in Easyjet were knocked after it said investment would lead to flat revenue per seat in the first half of 2015. Broker Charles Stanley said the results were good, but added: "Given the increasingly competitive market, there is no upgrade to profit estimates, which may disappoint some. We maintain our recommendation at 'hold'."Aerospace, defence and energy engineering group Meggitt failed to impress with the news it has won a $57.3m contract to provide heating, ventilating and air conditioning (HVAC) systems for combat vehicles in Canada.FTSE 100 - RisersTullow Oil (TLW) 472.10p +2.92%British Sky Broadcasting Group (SKY) 887.50p +2.72%Burberry Group (BRBY) 1,588.00p +2.45%Randgold Resources Ltd. (RRS) 4,423.00p +2.41%Shire Plc (SHP) 4,457.00p +2.27%Sports Direct International (SPD) 649.50p +2.20%United Utilities Group (UU.) 903.00p +1.86%Next (NXT) 6,730.00p +1.74%Dixons Carphone (DC.) 424.10p +1.70%AstraZeneca (AZN) 4,674.50p +1.70%FTSE 100 - FallersRio Tinto (RIO) 3,004.50p -1.75%Reckitt Benckiser Group (RB.) 5,235.00p -1.60%Standard Chartered (STAN) 921.40p -1.59%Ashtead Group (AHT) 1,049.00p -1.50%ARM Holdings (ARM) 879.50p -1.18%Antofagasta (ANTO) 708.50p -1.12%Meggitt (MGGT) 473.00p -1.09%Anglo American (AAL) 1,358.50p -1.02%easyJet (EZJ) 1,529.00p -0.97%Vodafone Group (VOD) 226.95p -0.92%