Newsagent chain WH Smith jumped after saying it expects results for the year to the end of August will be at the top end of market expectations as the group's Travel business improves margins. The group also revealed a £50m share purchase programme for 2013.? Heading the other way was gold producer Petropavlovsk whose bottom line lost its lustre in the first half of the year as interest payments bit and the group took a bath on its gold option contracts. FTSE 250 - RisersSIG (SHI) 100.10p +6.32%Aquarius Platinum Ltd. (AQP) 41.05p +5.26%WH Smith (SMWH) 605.00p +3.95%Kentz Corporation Ltd. (KENZ) 371.60p +3.22%Soco International (SIA) 346.10p +3.01%Carpetright (CPR) 639.00p +2.98%Shanks Group (SKS) 90.05p +2.33%Rank Group (RNK) 133.00p +2.31%Perform Group (PER) 378.30p +2.24%Man Group (EMG) 78.45p +2.15%FTSE 250 - FallersPetropavlovsk (POG) 394.80p -15.80%Home Retail Group (HOME) 92.10p -3.15%Regus (RGU) 98.60p -2.86%Brown (N.) Group (BWNG) 267.50p -2.69%AZ Electronic Materials SA (DI) (AZEM) 295.90p -2.66%NMC Health (NMC) 191.80p -2.34%Chemring Group (CHG) 369.50p -2.15%Taylor Wimpey (TW.) 50.55p -1.94%Bwin.party Digital Entertainment (BPTY) 95.15p -1.91%Drax Group (DRX) 461.00p -1.83%FTSE TechMARK - RisersAEA Technology Group (AAT) 0.080p +14.29%Pace (PIC) 161.75p +3.85%Phoenix IT Group (PNX) 220.00p +3.77%Phytopharm (PYM) 7.90p +3.61%Vislink (VLK) 34.00p +3.03%Innovation Group (TIG) 20.00p +2.56%Skyepharma (SKP) 96.00p +2.13%E2V Technologies (E2V) 125.00p +2.04%Microgen (MCGN) 127.50p +1.59%Consort Medical (CSRT) 738.50p +0.51%NR