Stocks to watch at noon on Tuesday Stocks to watch on the Australian stock exchange at noon on Tuesday: AGP - ATLAS IRON LTD - down six cents, or 3.75 per cent, at $1.54 Atlas Iron has posted a first half loss of $256 million, caused by writedowns in the value of several exploration areas. FLT - FLIGHT CENTRE LTD - down $1.135 cents, or 3.51 per cent, at $31.155 Travel agency chain Flight Centre is on track to lift its full year earnings and remains on the lookout for acquisitions. Vodafone Australia says a law firm that is threatening a class action against the telco hasn't contacted the company in two years. OHS - OIL SEARCH LTD - down four cents, or 0.54 per cent, at $7.39 QBE Insurance says Australian premiums will continue to rise in 2013 as it deals with major catastrophe costs from its north American business. TSE - TRANSFIELD SERVICES LTD - down xx cents, or xx per cent, at Construction and maintenance firm Transfield Services has posted a first half loss of $247 million, after announcing massive writedowns driven by a weakening mining sector. Virgin Australia's first half profit has slumped by 56 per cent but it expects to improve its underlying performance despite challenging economic conditions. WHC - WHITEHAVEN COAL LTD - down eight cents, or 2.67 per cent, at $2.92 Whitehaven Coal shares have fallen after the company posted a $47 million first half loss.