A positive note from UBS has whetted investor appetite for shares in Restaurant Group.Following a tough Christmas in the depths of the downturn in 2008, UBS thinks that the owner of the Frankie & Bennie's and Chiquito chains, will have seen better trading over the latest festive period and has upped its rating on the company accordingly.It now has a 'buy' stance on the company, compared with 'neutral' previously and lifts its target price to 218p from 205p.Recruiter Michael Page, whose trading update is due later this week, is another riser.Among today's fallers are housebuilders Bellway, Bovis and Persimmon.FTSE 250 - RisersDunelm Group (DNLM) 408.80p +7.58%Wellstream Holdings (WSM) 561.00p +5.65%Paragon Group Of Companies (PAG) 137.80p +5.19%Melrose Resources (MRS) 286.30p +5.06%Lamprell (LAM) 194.00p +5.04%Aquarius Platinum Ltd. (AQP) 427.10p +4.94%Michael Page International (MPI) 397.40p +4.88%ITV (ITV) 54.90p +4.87%Petropavlovsk (POG) 1,074.00p +4.68%Restaurant Group (RTN) 195.60p +4.60%FTSE 250 - FallersBellway (BWY) 783.00p -4.28%Bovis Homes Group (BVS) 420.30p -3.31%Dechra Pharmaceuticals (DPH) 477.00p -3.05%Robert Wiseman (RWD) 500.00p -2.53%F&C Commercial Property Trust (FCPT) 88.10p -2.11%F&C Asset Management (FCAM) 74.30p -2.11%Savills (SVS) 313.90p -1.91%Aegis Group (AGS) 117.20p -1.84%Daejan Holdings (DJAN) 2,800.00p -1.72%Persimmon (PSN) 462.30p -1.53%