Oilfield services group Petrofac was a big faller after underwhelming with a nine per cent rise in revenue and 17 per cent increase in net profit in 2012. The firm´s plans to invest around $1bn in capital outlays over the next five years displeased some analysts. Eurasian Natural Resources Corporation was down after it announced that, taking into account the effect of one-off step-up gains and impairments, the effective-tax-rate (ETR) for the group, for 2012, is expected to be around 45%, above the previously guided level of 37% to 39%. Intu Properties, formerly known as Capital Shopping Centres Group, posted a stable set of full year results on Wednesday while at the same time unveiling a placing to fund the acquisition of Midsummer Place in Milton Keynes, prompting shares to fall. After an earlier rise following its full-year figures, broadcaster ITV had slipped into the red though the company has it played down market chatter about bid speculation. The firm announced this morning that it would be rewarding shareholders with a special dividend worth £156m after posting 2012 results which showed a rise in profits and revenues. Energy company Centrica was subdued despite saying 2012 earnings rose 5.0% as cold weather during the year pushed up gas consumption. Meanwhile, engineering solutions group Weir was a high riser after managing to register record profits and margins last year and saying that it expects another year of profitable growth in 2013. The company´s stock - one of the most 'shorted' on the Footsie - today seems to have pierced technical resistance at 2,200p Digital Look analysts point out. FTSE 100 - RisersWeir Group (WEIR) 2,282.00p +5.45%Melrose Industries (MRO) 257.00p +2.76%Prudential (PRU) 964.00p +2.28%Fresnillo (FRES) 1,548.00p +2.18%Aggreko (AGK) 1,679.00p +1.76%Hargreaves Lansdown (HL.) 849.00p +1.49%Bunzl (BNZL) 1,238.00p +1.39%Vodafone Group (VOD) 164.10p +1.36%Polymetal International (POLY) 1,012.00p +1.35%IMI (IMI) 1,214.00p +1.34%FTSE 100 - FallersPetrofac Ltd. (PFC) 1,479.00p -7.39%Eurasian Natural Resources Corp. (ENRC) 344.10p -3.40%Intu Properties (INTU) 333.60p -2.71%ITV (ITV) 117.90p -1.91%Croda International (CRDA) 2,555.00p -1.12%Serco Group (SRP) 568.50p -1.04%Centrica (CNA) 345.70p -0.97%Diageo (DGE) 1,942.50p -0.94%Schroders (SDR) 1,966.00p -0.71%Land Securities Group (LAND) 813.50p -0.67%NR