Recruitment giant Hays is the pick of the bunch holding on to gains made after yesterday's positive update. The group grew net fees by more than a fifth during its second quarter as rapid growth at the international business made up for a drab performance in the UK. Budget airline easyJet is flying high after selling 7.6% more seats in December than the same time last year and filled its planes slightly better as well. The no-frills carrier flew 3.66m passengers compared with 3.34m in December 2009. That takes the rolling 12-month figure to 49.72, up 7.9% on last year.Ukraine-focused oil and gas group JKX is taking a pounding after announced a potentially big tax hike after the government there introduced a new tax code this year. The overall impact is anticipated to be an immediate increase in subsidiary Poltava Petroleum's effective tax rate from approximately 30% to approximately 50%, JKX says.FTSE 250 - RisersHays (HAS) 132.40p +4.50%F&C Asset Management (FCAM) 92.35p +3.88%Dixons Retail (DXNS) 23.85p +3.65%Travis Perkins (TPK) 1,090.00p +3.22%easyJet (EZJ) 469.50p +3.19%Genus (GNS) 857.00p +3.07%Inchcape (INCH) 391.50p +3.03%JD Sports Fashion (JD.) 890.00p +2.83%Avis Europe (AVE) 226.00p +2.73%Pennon Group (PNN) 651.50p +2.44%FTSE 250 - FallersJKX Oil & Gas (JKX) 287.00p -10.40%Redrow (RDW) 131.80p -4.08%International Personal Finance (IPF) 360.50p -3.61%Fenner (FENR) 343.70p -3.40%Shanks Group (SKS) 119.00p -2.94%Kenmare Resources (KMR) 31.25p -2.80%Hochschild Mining (HOC) 577.00p -2.53%Salamander Energy (SMDR) 270.20p -2.45%Heritage Oil (HOIL) 474.20p -2.43%Marston's (MARS) 109.00p -2.33%