Precious metals giant Polymetal was a high riser early on after managing to hold back on costs in 2012 despite a strong rise in production. The company also raised its payout ratio to shareholders last year as it reported a 47 per cent jump in adjusted EBITDA. Aberdeen Asset Management was another strong riser after Jefferies upped its target price on the stock from 400p to 420p, maintaining a hold recommendation. Royal Bank of Scotland and Barclays both took a hit after it was reported they will be among the banks that will be asked to pay more towards the cost of regulating the financial sector under the government's new so-called "twin peaks" system of supervision. The Financial Conduct Authority (FCA) and Prudential Regulation Authority (PRA), which took over responsibility for City regulation last week, are expected to announce a 20% increase in fees of £600m to major banks, brokers and insurers. Miner BHP Billiton dropped after Morgen Stanley reduced its target price from 2,310p to 2,210p and reiterates an overweight rating. FTSE 100 - RisersPolymetal International (POLY) 885.00p +5.61%Weir Group (WEIR) 2,282.00p +4.49%Tullow Oil (TLW) 1,190.00p +3.12%Aberdeen Asset Management (ADN) 406.90p +2.47%Reed Elsevier (REL) 755.00p +1.89%Hammerson (HMSO) 484.60p +1.83%Antofagasta (ANTO) 977.00p +1.66%Evraz (EVR) 197.20p +1.65%Wolseley (WOS) 3,089.00p +1.61%Hargreaves Lansdown (HL.) 853.00p +1.43%FTSE 100 - FallersResolution Ltd. (RSL) 261.30p -1.73%Lloyds Banking Group (LLOY) 46.24p -1.64%Standard Chartered (STAN) 1,641.00p -1.38%Centrica (CNA) 369.60p -1.20%IMI (IMI) 1,226.00p -0.97%Royal Bank of Scotland Group (RBS) 267.30p -0.82%Barclays (BARC) 277.80p -0.79%Marks & Spencer Group (MKS) 374.20p -0.69%HSBC Holdings (HSBA) 677.40p -0.60%BHP Billiton (BLT) 1,871.50p -0.43%