London open: Chinese data, JP Morgan weighs on stocks

- Chinese industrial output, inflation data disappoints- Spain to ask for EFSF support, according to reports- JP Morgan surprise trading loss causes concernsThe FTSE 100 fell sharply in early trading on Friday as weak Chinese data, Spanish concerns and a surprise trading loss from JP Morgan Chase and Co weighed on sentiment.Industrial production figures in China disappointed early on as investment growth eased to a near 10-year low in April. Output increased by 9.3% year-on-year last month, down from the 11.9% rise in March and well below the 12.2% gain expected. This was the lowest growth rate since May 2009. Fixed asset investment growth slowed from 20.9% to 20.2% in April, its slowest level since late 2002.Chinese consumer price inflation slowed from 3.6% to 3.4% in April, under the government's 4% target again, fuelling speculation for further monetary easing.Meanwhile, there were rumours that Spain could ask for support from the Eurozone bailout fund, the European Financial Stability Facility (EFSF). The nation's banks have €184bn in "problematic" property and construction assets, says the Bank of Spain. According to MarketWatch.com, the country could ask the EFSF for €300bn.UK banking stocks were under pressure early on after US investment bank JP Morgan Chase & Co shocked the market after the bell on Thursday by revealing its second-quarter performance will be dented by a huge trading loss on synthetic credit securities at its Chief Investment Office. The firm said that so far the losses amounted to $2bn but could "easily increase during the quarter".FTSE 100: IAG, banks and miners out of favourSoaring fuel costs contributed to a larger than expected first-quarter loss at International Consolidated Airlines Group (IAG), the airline formed by the merger of British Airways and Iberia. The airline reported an operating loss of €249m in the first quarter (compared with a €102m loss last year), an outcome worse than the €230m loss the market had been expecting. Banks were heavy fallers in the opening hour on the back of the JP Morgan surprise trading loss. Barclays, Royal Bank of Scotland, Lloyds and HSBC were among the worst performers.Meanwhile, mining stocks were pushed lower after the gloomy Chinese data weighed on the demand outlook from the world's second-largest economy. Rio Tinto, ENRC, BHP Billiton and Vedanta all fell into the red.Oil and gas services group Petrofac fell despite saying that its year-to-date performance has been in line with expectations and it still remains on track to grow net profits by at least 15% in 2012. FTSE 250: Catlin avoids catastrophe claimsSpeciality insurance company Catlin Group jumped after seeing an increase in the amount of premiums written in the three months to the end of March, while avoiding any catastrophe claims. Overall premiums are up 12% against the prior year, totalling $1.642bn.Mining stocks dropped, tracking their top-tier counterparts lower with Hochschild Mining, Lonmin, Ferrexpo, Petropavlovsk, Bumi, Avocet Mining and New World Resources suffering steep losses.FTSE 100 - RisersMarks & Spencer Group (MKS) 358.20p +2.96%Severn Trent (SVT) 1,674.00p +1.95%Man Group (EMG) 87.35p +1.63%Next (NXT) 2,979.00p +0.88%United Utilities Group (UU.) 635.50p +0.87%Shire Plc (SHP) 2,007.00p +0.85%Kingfisher (KGF) 288.20p +0.84%Sainsbury (J) (SBRY) 311.70p +0.74%Tate & Lyle (TATE) 698.50p +0.72%National Grid (NG.) 674.00p +0.60%FTSE 100 - FallersBarclays (BARC) 201.40p -3.54%Eurasian Natural Resources Corp. (ENRC) 520.50p -3.07%Vedanta Resources (VED) 1,086.00p -2.86%Evraz (EVR) 337.30p -2.80%Rio Tinto (RIO) 3,065.50p -2.67%Glencore International (GLEN) 385.90p -2.67%Kazakhmys (KAZ) 755.50p -2.64%Xstrata (XTA) 1,060.50p -2.53%BHP Billiton (BLT) 1,824.50p -2.51%Royal Bank of Scotland Group (RBS) 22.48p -2.47%FTSE 250 - RisersNorthgate (NTG) 203.50p +5.28%Stobart Group Ltd. (STOB) 123.80p +4.47%Catlin Group Ltd. (CGL) 430.60p +2.87%Ruspetro (RPO) 170.00p +2.29%Debenhams (DEB) 78.70p +2.27%Essar Energy (ESSR) 132.50p +2.24%Berkeley Group Holdings (The) (BKG) 1,247.00p +2.13%Telecity Group (TCY) 780.00p +1.83%Bovis Homes Group (BVS) 464.00p +1.71%Domino Printing Sciences (DNO) 580.50p +1.49%FTSE 250 - FallersImagination Technologies Group (IMG) 605.50p -4.19%Lonmin (LMI) 911.50p -3.85%Hochschild Mining (HOC) 418.00p -3.73%Logica (LOG) 71.15p -3.66%Ferrexpo (FXPO) 252.70p -3.37%Petropavlovsk (POG) 422.50p -3.14%Aquarius Platinum Ltd. (AQP) 106.20p -2.75%Heritage Oil (HOIL) 132.20p -2.58%Supergroup (SGP) 326.10p -2.07%Ophir Energy (OPHR) 522.00p -1.97%BC