Shares in insurer Aviva soared after investors celebrated a better-than-expected set of 2013 results as its turnaround under Chief Executive Mark Wilson saw encouraging progress. Operating profits rose 6% year-on-year to £2,049m, some 3% ahead of the consensus estimate of £1,988m. Panmure Gordon was also providing a lift to the stock today, raising its rating from 'hold' to 'buy'.Temporary power group Aggreko jumped strongly after confirming that it would return £200m in capital to shareholders, outweighing the news that profits fell 8% last year.Schroders also surged after hiking its full-year dividend by 35% following a record year for the asset management group in 2013 as the company saw profits increase 41%.Mining stocks were also higher as rising metal prices marched into positive territory. Results from engineering group IMI, however, failed to impress as the company reported a 3% increase in revenues from continuing operations. The company said it expects "modest" growth in the first half of 2014, but only when excluding the adverse impact of exchange rates.Meggitt extended yesterday's losses which came after Deutsche Bank cut its target price from 510p to 485p, and JP Morgan cut its target from 575p to 540p. Legal & General was in the red after Beaufort Securities lowered its rating on the stock to 'hold', while BSkyB was hit by a downgrade to 'neutral' by Westhouse.FTSE 100 - RisersAviva (AV.) 507.50p +8.88%Aggreko (AGK) 1,652.00p +5.02%Schroders (SDR) 2,705.00p +4.44%Anglo American (AAL) 1,561.00p +2.70%Fresnillo (FRES) 937.00p +2.63%Glencore Xstrata (GLEN) 339.90p +2.32%Aberdeen Asset Management (ADN) 389.80p +2.04%Lloyds Banking Group (LLOY) 82.10p +1.70%International Consolidated Airlines Group SA (CDI) (IAG) 448.40p +1.36%Rio Tinto (RIO) 3,310.00p +1.25%FTSE 100 - FallersIMI (IMI) 1,466.00p -5.30%Legal & General Group (LGEN) 232.50p -1.48%Meggitt (MGGT) 479.50p -1.46%TUI Travel (TT.) 429.20p -1.36%British Sky Broadcasting Group (BSY) 929.50p -1.22%Marks & Spencer Group (MKS) 497.10p -1.17%United Utilities Group (UU.) 784.00p -1.13%Travis Perkins (TPK) 1,924.00p -1.08%Persimmon (PSN) 1,419.00p -0.98%Tesco (TSCO) 324.55p -0.90%NR