London open: Stocks rebound ahead of key US data

UK markets opened with decent gains on Tuesday morning, rebounding after having closed at levels not seen since early January the day before.Renewed concerns over a slowdown in China and ongoing fears about a scaling back of stimulus in the States prompted another steep sell-off across global equity markets on Monday, meaning that the FTSE 100 had nearly erased all of its year-to-date gains."In just over a month the FTSE 100 has given back over 10% and looks in danger of testing 6,000 at some point. Basic materials have played a large part in dragging the index lower, as the weakness from China radiates across relative asset classes," said Financial Trader David White from Spreadex.Nevertheless, the market's focus is likely to be on the States today ahead of a barrage of key economic data this afternoon, including durable goods orders for May, the S&P/Case-Shiller house price index for April, new home sales for May and consumer confidence figures for June."It's going to be interesting to see how investors react to the data now that any improvement will increase the chances of [Federal Reserve] tapering in September, although I still think it will be December at the earliest," said Market Analyst Craig Erlam from Alpari.FTSE 100: Rexam falls after gloomy updateConsumer packaging giant Rexam was a heavy faller after admitting that full-year trading will be below expectations after a slowdown in beverage can volumes growth in the first half. The company also announced its intention to sell off its Healthcare business.Oilfield service company Petrofac fell despite reporting "modest growth" in half-year net profit driven by a strong operational performance and an active project portfolio. Sector peer Wood Group rose after extending one of its longest running projects in the North Sea. Chip designer ARM Holdings was a high riser this morning after Investec upgraded the group from 'hold' to 'buy' after a 32% fall in the shares since an analyst day in May. "We see ARM as the most attractive long term investment in the sector with underpinned earnings growth."Financial services group Prudential was making gains this morning after Berenberg said that the stock's recent pull-back on emerging market concerns "represents a rare buying opportunity".Similarly, Fresnillo was higher after Citigroup raised the precious metals miner from 'sell' to 'neutral' after a recent sharp fall in the share price.Telecoms giant Vodafone was making gains a day after launching a £6.6bn takeover offer for Kabel Deutscheland. The stock was given a lift this morning by Nomura which upgraded its rating from 'neutral' to 'buy'.FTSE 250: Domino Printing falls early onIndustrial coding, printing and marking technology group Domino Printing was lower early on after swinging into a pre-tax loss for the half year as difficult trading conditions across most of Europe persisted.Kazakhmys was rebounding after some heavy falls the day before. The company yesterday recommended shareholders to vote in favour of an offer for its 26% stake in ENRC, saying that it is the best option for shareholders despite the price being lower than hoped.FTSE 100 - RisersARM Holdings (ARM) 787.00p +3.76%Weir Group (WEIR) 2,089.00p +2.60%Experian (EXPN) 1,112.00p +2.30%Aviva (AV.) 326.70p +2.09%Vedanta Resources (VED) 1,047.00p +2.05%Eurasian Natural Resources Corp. (ENRC) 217.80p +1.87%Anglo American (AAL) 1,321.50p +1.85%William Hill (WMH) 422.80p +1.83%Fresnillo (FRES) 903.00p +1.75%Aberdeen Asset Management (ADN) 354.50p +1.60%FTSE 100 - FallersRexam (REX) 444.00p -4.54%Petrofac Ltd. (PFC) 1,212.00p -1.78%Imperial Tobacco Group (IMT) 2,241.00p -1.62%Hammerson (HMSO) 465.40p -1.21%Whitbread (WTB) 2,881.00p -0.96%British Land Co (BLND) 550.50p -0.81%Land Securities Group (LAND) 847.00p -0.65%Randgold Resources Ltd. (RRS) 4,064.00p -0.56%Resolution Ltd. (RSL) 269.30p -0.55%AstraZeneca (AZN) 3,036.50p -0.52%FTSE 250 - RisersAlent (ALNT) 349.80p +5.27%Lonmin (LMI) 267.90p +4.44%Kazakhmys (KAZ) 242.30p +3.68%Ferrexpo (FXPO) 139.20p +3.34%Elementis (ELM) 216.80p +3.14%Henderson Group (HGG) 143.80p +2.86%Paragon Group Of Companies (PAG) 290.30p +2.58%Fenner (FENR) 324.60p +2.40%Polymetal International (POLY) 504.50p +2.27%Kenmare Resources (KMR) 25.53p +2.24%FTSE 250 - FallersMillennium & Copthorne Hotels (MLC) 518.00p -4.25%Domino Printing Sciences (DNO) 573.00p -4.18%Homeserve (HSV) 272.70p -1.59%Hiscox Ltd (HSX) 524.50p -1.41%Perform Group (PER) 564.00p -1.05%African Barrick Gold (ABG) 111.20p -0.98%Intu Properties (INTU) 297.80p -0.93%Inmarsat (ISAT) 634.50p -0.86%Grainger (GRI) 142.30p -0.84%Bellway (BWY) 1,218.00p -0.73%