Marks & Spencer Share News (MKS)

UK stocks were trading firmly in the red on Friday, as Greece missed the deadline for its €300m payment and OPEC decided against curbing oil production.Sector-wise, gains made by oil stocks and miners were offset by weakness across construction and food retailer stocks. As of 14:00 BST, the FTSE 100 was trading 0.84% lower at 6,801.Marks and Spencer reversed Thursday's gains, which came as the retailer showed its first increase in profits in four years.Morrison was in the red as Deutsche Bank cut its price target on the stock from 210p to 180p. The bank also cut its target for Tesco to 240p from 275 on sector-wide concerns for food retail."We've seen no improvement in UK grocery market growth since the tentative rebound experienced in December and January faded ... We lower our calendar 2015 estimate for UK market growth from 1.5% to 1%," it said in a report to investors.Miners dominated the risers, including Anglo American, BHP Billiton, Rio Tinto, Antofagasta and Glencore, rebounding from a weak performance on Thursday, while construction firms Barrat Developments and Taylor Wimpey registered losses.Oil stocks BP, BG Group and Royal Dutch Shell surged despite OPEC deciding not to cut oil production at its meeting on Friday. Oil futures were also higher across the board.Looming oversupply in the wake of OPEC's decision caused International Consolidated Airlines to soar on the likelihood of continued lower fuel prices. RisersBHP Billiton (BLT) 1,337.00p +1.02%Rio Tinto (RIO) 2,873.50p +0.82%Anglo American (AAL) 1,013.00p +0.80%BP (BP.) 441.05p +0.20%International Consolidated Airlines Group SA (CDI) (IAG) 527.00p +0.19%Babcock International Group (BAB) 1,145.00p +0.17%Pearson (PSON) 1,289.00p +0.16%AstraZeneca (AZN) 4,339.50p +0.06%FallersMarks & Spencer Group (MKS) 561.50p -2.94%Morrison (Wm) Supermarkets (MRW) 173.10p -2.92%Barratt Developments (BDEV) 588.50p -2.65%Hikma Pharmaceuticals (HIK) 2,002.00p -2.63%Aberdeen Asset Management (ADN) 420.80p -2.62%Taylor Wimpey (TW.) 183.80p -2.49%Schroders (SDR) 3,260.00p -2.42%Hargreaves Lansdown (HL.) 1,231.00p -2.38%Persimmon (PSN) 1,900.00p -2.31%Dixons Carphone (DC.) 466.80p -2.16%