Shares in CSR fall back after UBS downgraded the chip-maker to 'neutral' from 'buy'. The broker raises its target price on CSR, which makes chips for Bluetooth and GPS devices, to 540p from 495p, but thinks the stock is reaching fair value levels.Cheery broker coverage has given ITV a boost. Nomura thinks the improvement in advertising could be better than the broadcaster expected.'When ITV reported FY2009 results on 3 March 2010, the company indicated ITV advertising revenue would be up 7% for Q1 and 15-20% in April,' the broker said.'However, the latest read we have from the agencies suggests strength in the UK market has continued and ITV family could be up as much as 30% in April and 25% in May,' it continues.Elsewhere, dairy group Robert Wiseman and baked snacks chain Greggs are in demand, but DVD and CD retailer HMV and set-top box maker Pace are out of favour.FTSE 250 - RisersRobert Wiseman (RWD) 501.00p +2.24%Greggs (GRG) 429.90p +2.11%BBA Aviation (BBA) 190.00p +1.93%Synergy Healthcare (SYR) 606.50p +1.68%BTG (BGC) 184.90p +1.65%Fidelity Special Values (FSV) 534.50p +1.52%ITV (ITV) 52.60p +1.45%Logica (LOG) 127.10p +1.27%JKX Oil & Gas (JKX) 287.10p +1.23%Amlin (AML) 428.30p +1.13%FTSE 250 - FallersFerrexpo (FXPO) 294.30p -3.48%CSR (CSR) 467.50p -3.47%HMV Group (HMV) 79.85p -3.27%Enterprise Inns (ETI) 119.20p -3.09%Bodycote (BOY) 192.50p -3.02%Wellstream Holdings (WSM) 528.50p -2.85%Pace (PIC) 188.10p -2.84%Drax Group (DRX) 378.50p -2.67%Aquarius Platinum Ltd. (AQP) 382.40p -2.65%Salamander Energy (SMDR) 288.90p -2.60%