BBA Aviation is providing a drag after the aviation services provider proposed a placing of up to 9.99% to raise cash for acquisitions.Meanwhile, terrestrial broadcaster ITV is surging after promising an interim dividend after bumping up profits by almost 200% in 2010.Not too far behind is student accommodation manager Unite, as it reported that adjusted full diluted NAV per share rose 11% to 295p, underlining its confidence in future trading with the reinstatement of a dividend payment this year.Carillion is lower despite maintaining a bullish stance on prospects in the Middle East.Capital & Counties is edged higher after swinging into the black at the pre-tax level in 2010.FTSE 250 - RisersITV (ITV) 92.25p +7.89%Micro Focus International Plc (MCRO) 305.00p +7.17%JPMorgan Emerging Markets Inv Trust (JMG) 588.00p +5.28%Elementis (ELM) 140.20p +4.63%Unite Group (UTG) 204.00p +4.03%Tullett Prebon (TLPR) 413.70p +3.76%Rightmove (RMV) 932.00p +3.56%Hochschild Mining (HOC) 623.50p +2.38%Grainger (GRI) 101.60p +2.37%AZ Electronic Materials SA (WI) (AZEM) 307.80p +2.16%FTSE 250 - FallersBeazley (BEZ) 127.50p -6.52%BBA Aviation (BBA) 207.00p -5.39%Carillion (CLLN) 357.10p -4.52%Senior (SNR) 142.10p -4.50%Kier Group (KIE) 1,285.00p -3.75%Heritage Oil (HOIL) 264.20p -3.33%Cobham (COB) 211.40p -3.21%Mondi (MNDI) 533.00p -3.09%Dixons Retail (DXNS) 18.19p -3.04%Provident Financial (PFG) 950.00p -3.01%