UK stocks pulled back from a four-week high on Monday morning after mixed global economic data and underwhelming results from banking heavyweight HSBC.After a positive start, the FTSE 100 had erased early gains and was trading 0.4% down at 6,521 by midday. The index closed at 6,546.47 on Friday, its best finish since 6 October.Stock futures on Wall Street was also lower ahead of the opening bell on Wall Street with the S&P 500 and Dow Jones Industrial Average both set to retreat after reaching record highs of 2,018 and 17,391 last week."The S&P 500 was looking a little exposed at all-time highs having skyrocketed higher on Friday thanks to the unexpected Japanese stimulus, but disappointing Chinese and European manufacturing data now look set to bring stocks back down to earth on Monday," said analyst Jasper Lawler from CMC Markets UK.Data released overnight showed that the government's official Chinese manufacturing purchasing managers' index (PMI) unexpectedly declined from 51.1 to a five-month low of 50.8, while the final estimate of HSBC's own survey was unchanged at 50.4.Meanwhile, the final reading of Markit's Eurozone manufacturing PMI for October was revised to 50.6, up from 50.3 in September but down from the initial estimate of 50.7. "Weak client demand and persistent economic uncertainties continued to weigh on confidence, signalling that [Eurozone] manufacturing activity is unlikely to improve significantly in the fourth quarter," said analyst Apolline Menut from Barclays.On a positive note, Markit's UK manufacturing PMI bounced off a 17-month low of 51.5 in September to rise to a three-month high of 53.2 in October, ahead of expectations. Markit economist Rob Dobson said the report was a " positive marker for the start of the final quarter".HSBC dips as Q3 profits dropHSBC's share price slipped after the company reported a 12% drop in underlying pre-tax profit in the third quarter to $4.41bn on the back of a number of "significant items". These included customer redress for mis-sold PPI, a charge for a US housing probe and provisions for an investigation into alleged currency-rate rigging. Reported revenues were 5% higher at $15.8bn, but broadly unchanged on an underlying basis.Royal Bank of Scotland was also trading lower, pulling back after a steep post-results jump on Friday, after Investec downgraded the stock from 'hold' to 'sell'. Barclays and Lloyds also fell.Airline stocks were performing well in early trading after Irish low-cost carrier Ryanair lifted its annual profit guidance by nearly 20% after a jump in winter bookings. Easyjet and IAG were also in demand.Mining stocks were mostly higher Randgold Resources, BHP Billiton and Anglo American making gains by noon. Anglo American advanced after it was reported over the weekend that X2 Resources had made a bid for Anglo's Chilean copper mines, Brazilian nickel mines and some coal projects. X2 Resources is run by Mick Davis, the former boss of Xstrata. Market MoverstechMARK 2,771.56 -0.26%FTSE 100 6,521.11 -0.39%FTSE 250 15,495.31 -0.04%FTSE 100 - RisersPetrofac Ltd. (PFC) 1,084.00p +2.26%easyJet (EZJ) 1,532.00p +2.13%Randgold Resources Ltd. (RRS) 3,752.00p +2.01%Tesco (TSCO) 176.00p +1.38%Morrison (Wm) Supermarkets (MRW) 156.90p +1.36%BHP Billiton (BLT) 1,627.50p +1.06%Anglo American (AAL) 1,328.50p +0.91%International Consolidated Airlines Group SA (CDI) (IAG) 412.90p +0.90%Tullow Oil (TLW) 489.90p +0.84%BG Group (BG.) 1,048.00p +0.77%FTSE 100 - FallersRoyal Bank of Scotland Group (RBS) 381.10p -1.78%Centrica (CNA) 297.30p -1.72%Smith & Nephew (SN.) 1,039.00p -1.70%Kingfisher (KGF) 297.70p -1.59%SSE (SSE) 1,574.00p -1.56%United Utilities Group (UU.) 841.50p -1.52%Prudential (PRU) 1,421.00p -1.49%Reckitt Benckiser Group (RB.) 5,175.00p -1.43%3i Group (III) 391.30p -1.41%Unilever (ULVR) 2,481.00p -1.31%FTSE 250 - RisersKaz Minerals (KAZ) 247.50p +7.52%Ocado Group (OCDO) 265.40p +6.71%Bwin.party Digital Entertainment (BPTY) 94.85p +5.80%AO World (AO.) 174.20p +5.00%Ophir Energy (OPHR) 193.70p +4.53%EnQuest (ENQ) 71.95p +3.67%Cairn Energy (CNE) 150.00p +3.38%Betfair Group (BET) 1,248.00p +3.14%Centamin (DI) (CEY) 52.70p +2.93%Hochschild Mining (HOC) 101.70p +2.78%FTSE 250 - FallersAveva Group (AVV) 1,476.00p -3.91%Alent (ALNT) 329.80p -2.43%Hikma Pharmaceuticals (HIK) 1,851.00p -2.32%Infinis Energy (INFI) 211.00p -2.22%Stagecoach Group (SGC) 378.70p -2.14%Smith (DS) (SMDS) 259.10p -2.12%Millennium & Copthorne Hotels (MLC) 556.00p -2.11%Just Retirement Group (JRG) 130.40p -1.95%Berendsen (BRSN) 991.00p -1.88%Supergroup (SGP) 814.50p -1.87%