Spirent Communications was higher on reports it has launched a new piece of technology which is used to address the ultra-high bandwidth requirements of modern communication networks.Rajesh Rajamani, Market Segment Leader, was quoted as saying: "Spirent continues to advance the boundaries of next generation networking with support for CFP4, the industry's cutting edge optical transceiver technology. With the same number of test modules and chassis as before, our customers can now double the amount of traffic generated using our 4-port Spirent dX2 100G modules with CFP4." Hansteen Holdings rose after Jefferies upped its target price from 100p to 105p. Meanwhile, Home Retail Group was lower, which may be linked to Societe Generale's reiterated 'sell' rating despite the group yesterday forecasting annual profits above expectations after good trading in the last couple of months.Wetherspoons fell after the pub group posted lower-than-expected pre-tax profit growth at 3.2%, despite a decent rise in turnover.Ocado continued to fall following this week's disappointing results, which came on the back of a poor set of full-year figures from partner Morrison. FTSE 250 - RisersRank Group (RNK) 148.00p +10.86%Hellermanntyton Group (HTY) 330.00p +4.27%Kenmare Resources (KMR) 13.69p +4.11%Spirent Communications (SPT) 100.80p +3.81%Fidessa Group (FDSA) 2,547.00p +3.33%Savills (SVS) 600.50p +2.74%Telecom Plus (TEP) 1,847.00p +2.55%Polymetal International (POLY) 571.00p +2.42%Hansteen Holdings (HSTN) 107.40p +2.29%Synthomer (SYNT) 266.00p +2.11%FTSE 250 - FallersBank of Georgia Holdings (BGEO) 2,184.00p -7.65%Pace (PIC) 457.90p -5.29%Man Group (EMG) 100.80p -4.91%Ocado Group (OCDO) 483.20p -3.84%Home Retail Group (HOME) 207.50p -3.67%Evraz (EVR) 53.95p -3.40%Close Brothers Group (CBG) 1,400.00p -3.38%Enterprise Inns (ETI) 146.40p -3.30%ICAP (IAP) 391.80p -3.12%Greencore Group (GNC) 270.00p -3.12%NR