Security services company G4S (GFS.L) was the biggest riser in early trading (at 0903) as the FTSE 100 showed signs of a rebound.

The blue chip index rose towards the 5,200 level early on, as markets continued to confound investors.

G4S rose after announcing a 5 per cent year-on-year rise in group turnover for the first half to around £3.8 billion in the six months to 30 June 2011, compared with £3.6 billion, previously.

The group also saw profit before interest, tax, and amortisation rise 3 per cent to £239 million, from £233 million in the first half of 2010.

Nick Buckles, chief executive officer, said a strong pipeline of merger & acquisition opportunities and a recovery in growth had fuelled confidence for 2011 and 2012.

The company raised its interim dividend by 8 per cent to 3.42p, to reflect the confidence, said Buckles.

He added, 'Following a robust performance during the global recession, organic growth is accelerating in most regions and business sectors and we have a healthy pipeline of bidding opportunities, particularly in the UK government market.'

Elsewhere, commercial broadcaster ITV (ITV.L) climbed 5.1 per cent higher to 57.35p, as microchip manufacturer Arm Holdings rose 5 per cent to 516.5p.

Commodities trader Glencore International (GLEN.L) saw its share price up 4.7 per cent to 371.75p, while copper miner Antofagasta (ANTO.L) added 4 per cent to its share price of 1,260p.

The only faller in early trading (at 0904) was Mexican silver miner Fresnillo (FRES.L), dropping 2.1 per cent to 1,997p.
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