UBS has upgraded fixed income fund manager BlueBay to 'buy' from 'neutral' with price target up to 400p from 360p ahead of tomorrow's second quarter update. The broker thinks assets under management will have risen 9% to $34bn from $31.1bn at the end of September, driven primarily by further net fund inflows. BlueBay has underperformed recently on concerns over exposure to Dubai.Charles Scott, chairman of William Hill since 2004, is to stand down as the bookmaker reported healthy trading in the final three months of 2009. In a trading statement today, Hill added that it saw good trading through the balance of 2009 and gross win margins for the full year returned to the normal 17-18% range. Ladbrokes has piggy-backed higher on the news.HSBC has upgraded Electrocomponents to 'overweight' from 'underweight' and doubled the target price to 220p.Hochschild is out of favour though along with other miners despite a record year of production as it announced output levels for the final quarter of 2009, while Comet hurt sales at Kesa Electricals.Military gadgets firm QinetiQ fell after Credit Suisse cut to the shares to 'neutral' from 'outperform' with price target down to 150p from 180p.FTSE 250 - RisersIG Group Holdings (IGG) 395.60p +6.20%BlueBay Asset Management (BBAY) 372.30p +4.87%William Hill (WMH) 194.50p +4.80%Chemring Group (CHG) 3,090.00p +4.46%Ladbrokes (LAD) 154.50p +3.76%VT Group (VTG) 547.50p +3.69%Ashtead Group (AHT) 90.05p +3.45%Rentokil Initial (RTO) 119.80p +2.74%Electrocomponents (ECM) 184.10p +2.33%Barratt Developments (BDEV) 133.50p +2.30%FTSE 250 - FallersAquarius Platinum Ltd. (AQP) 405.00p -5.35%Hochschild Mining (HOC) 317.20p -4.83%Ferrexpo (FXPO) 227.20p -4.18%Kesa Electricals (KESA) 140.40p -3.64%QinetiQ Group (QQ.) 137.00p -3.52%Croda International (CRDA) 792.00p -3.41%Morgan Crucible (MGCR) 161.30p -3.41%Regus (RGU) 93.80p -3.30%PayPoint (PAY) 425.50p -3.30%Lamprell (LAM) 205.00p -3.26%