Markets: US heavyweights cast a long shadow London ended the week on a negative note following heavy falls on Wall Street as third-quarter figures from US corporate heavyweights disappointed investors. Lacklustre earnings reports from the likes of General Electric and McDonald's cast a cloud, with traders still reeling after Google shocked the market on Thursday evening with a 20 per cent profits slide in results that were released earlier than planned due to a glitch. On the 25th anniversary of the Black Monday crash, London's FTSE 100 index broke its four-day winning streak to close down 20.9 points or almost 0.4 per cent at 5,896.15. Colin Cieszynski, senior market analyst at CMC Markets, said: "Following on from Google's big disappointment, a number of America's largest companies have come in below expectations on earnings, revenues or guidance. There also were more profit warnings out of the technology sector last night. The news was not all bad though as Capital One posted strong results. Barclays was nearly 3 per cent or 6.9p lower at 233.9p after Thursday's news of a further £700 million to cover the cost of rising PPI claims. Lloyds and Royal Bank of Scotland were also seeing share falls due to concerns they may have to set aside further provisions. Lloyds fell 1.4p to 40.5p as analysts at Investec Securities warned the part-nationalised player could face a further £2.3 billion in claims. Fellow taxpayer-backer bank RBS fell 6p to 281p. NEW YORK: Wall Street slid, the markets marking their worst day since late June after bellwethers General Electric and McDonald's extended a string of disappointing earnings. The Dow Jones industrial average fell 205.43 points, or 1.52 per cent, to end the day at 13,343.51 while the broader Standard & Poor's 500 index lost 24.15 points, or 1.66 per cent, to finish at 1,433.19.