FTSE 250 movers: BTG surges on strong forecasts, Electrocomponents hit by weak Q4

Drugs group BTG topped the risers after raising sales forecasts for the year, partly thanks to the acquisition of lung device company PneumRx.Food wholesale retailer Booker also rose after saying it had a "good end to a good year" with a 1% rise in fourth-quarter sales despite ongoing price deflation, as its chairman announced his resignation.Betair was trading lower as analysts at Exane Paribas reduced their price target on the stock by 75p to 2168p. Exane also cut its target for Ladbrokes by 20%, as it warned this dividend could be halved to help fund investment in digital.Electrocomponents was trading lower after revealing that sales growth slowed in the final months of 2014, as progress in North America was held back by the heavy snow storms.The price of iron ore plunged below $50 per metric tonne for the first time in over 10 years, as oversupply and lacklustre Chinese demand continue to hound the market. The effect on the UK mining sector was clear with Vedanta Resources and Evraz both in the red. RisersTelecom Plus (TEP) 932.50p +4.89%BTG (BTG) 773.00p +4.81%Centamin (DI) (CEY) 59.20p +4.59%Cranswick (CWK) 1,424.00p +4.48%Booker Group (BOK) 148.60p +4.35%Zoopla Property Group (WI) (ZPLA) 189.90p +4.17%Brewin Dolphin Holdings (BRW) 319.90p +3.86%Euromoney Institutional Investor (ERM) 1,142.00p +3.82%Entertainment One Limited (ETO) 312.10p +3.79%Rathbone Brothers (RAT) 2,124.00p +3.56%FallersElectrocomponents (ECM) 232.80p -3.56%Vedanta Resources (VED) 479.20p -3.35%Evraz (EVR) 191.40p -3.09%JD Sports Fashion (JD.) 470.50p -2.99%John Laing Infrastructure Fund Ltd (JLIF) 123.40p -2.68%Infinis Energy (INFI) 182.00p -2.15%Betfair Group (BET) 2,194.00p -2.10%Lonmin (LMI) 118.00p -1.83%Polymetal International (POLY) 566.50p -1.82%LondonMetric Property (LMP) 163.10p -1.75%