IG Group leapt following what broker Numis Securities termed a "substantial" increase in its dividend payment, up 28% to 22.4p. The financial spread betting firm reported a 2.4% rise in full-year trading revenue to £370.4m. Numis kept its 'add' rating on the stock with a target price of 665p. Security and defence group QinetiQ has maintained its outlook for the full year, although noted the uncertainty caused by the Ministry of Defence's transformation programme and within its own Global Products division. Premium growth and investment returns were both ahead of expectations at specialist insurer Beazley in the first half of the year, despite a more challenging market, helping the stock move higher. On the downside, Croda International was hit by a note from Canaccord Genuity, which restated its 'sell' rating on the chemicals company after the company's first half profit fell 6% to £125.1m year-on-year, as expected, in a tough trading environment.Bodycote was knocked lower by Jefferies, which reduced its target price from 895p to 825p, while UBM was also in the red after Panmure Gordon lowered its target price from 940p to 590p and downgraded the stock from 'buy' to 'sell'.FTSE 250 - RisersIG Group Holdings (IGG) 620.50p +7.91%Hays (HAS) 125.90p +4.83%Beazley (BEZ) 260.00p +4.42%Hikma Pharmaceuticals (HIK) 1,776.00p +3.80%Paragon Group Of Companies (PAG) 334.70p +3.53%QinetiQ Group (QQ.) 213.80p +3.29%Aveva Group (AVV) 2,040.00p +3.08%Cable & Wireless Communications (CWC) 47.46p +2.97%Investec (INVP) 538.00p +2.97%TalkTalk Telecom Group (TALK) 321.90p +2.94%FTSE 250 - FallersAO World (AO.) 211.60p -2.94%Tullett Prebon (TLPR) 247.40p -2.21%Croda International (CRDA) 2,167.00p -2.12%Moneysupermarket.com Group (MONY) 182.70p -1.98%Spectris (SXS) 2,098.00p -1.87%Bodycote (BOY) 664.50p -1.70%UBM (UBM) 644.00p -1.60%Spirent Communications (SPT) 97.30p -1.32%JD Sports Fashion (JD.) 390.10p -1.27%Evraz (EVR) 98.30p -1.21%NR