Tullow Oil rose after saying it was reviewing its costs in light of low international oil prices. The group said its financial performance in the year-to-date, before exploration write-offs and impairment charges, was in line with expectations.G4S said its trading in the third quarter was in line with expectations with organic revenue growth up 4.2% compared to a year ago. The security company's results in the nine months to the end of September were supported by new contract wins at a total value of £1.7bn, which will generate annual revenues of over £870m.Capita's shares plunged after reporting a drop in its bid pipeline in its third quarter results. The bid pipeline stands at £4.1bn, compared to £5.7bn in July 2014, comprising 26 bids with 87% new business and 13% renewals.SSE was also lower after reporting a 6.2% drop in pre-tax profit to £316.6m in its first half, though the utility group did lift its interim dividend by 2.3%.After an initial rise, shares in Sainsbury sank firmly into the red after the supermarket group warned that its full-year profit and dividend would be lower than last year's. Like-for-like sales fell 2.1% in the first half, while underlying profit sank 6.3%.FTSE 100 - RisersTullow Oil (TLW) 493.50p +2.34%Randgold Resources Ltd. (RRS) 4,203.00p +2.01%G4S (GFS) 269.20p +1.78%Anglo American (AAL) 1,365.50p +1.75%Antofagasta (ANTO) 722.00p +1.48%Royal Mail (RMG) 464.10p +1.33%Vodafone Group (VOD) 221.65p +1.19%Rio Tinto (RIO) 3,017.50p +1.05%Glencore (GLEN) 330.15p +0.95%SABMiller (SAB) 3,519.00p +0.90%FTSE 100 - FallersCapita (CPI) 1,048.00p -6.51%Aberdeen Asset Management (ADN) 425.80p -4.53%Hargreaves Lansdown (HL.) 983.50p -3.58%easyJet (EZJ) 1,536.00p -3.21%SSE (SSE) 1,532.00p -3.04%International Consolidated Airlines Group SA (CDI) (IAG) 411.00p -2.49%TUI Travel (TT.) 408.90p -2.18%Barclays (BARC) 230.00p -1.96%Mondi (MNDI) 1,055.00p -1.95%Sainsbury (J) (SBRY) 263.90p -1.93%