Shares in bottling firm Coca-Cola HBC sank over 3% on Thursday after saying unfriendly consumer sentiment and foreign exchange headwinds looked unlikely to improve during 2014 as it downgraded its volume expectations for the year as a whole.Financial services group Old Mutual declined after saying that adjusted operating profits fell 5% in the first half as a result of a weaker South African rand.RSA was also a heavy faller after net written premiums fell 9% in the first half. Pre-tax profits slumped from £250m last year to just £69m, as a result of £117m of restructuring costs.Precious metals miner Randgold Resources slipped after gold output in the second quarter fell 2% on the first three months of the year. Nevertheless, the company said it is still on track to hit its production guidance for 2014.Meanwhile, packaging group Mondi underwhelmed with a 3% rise in first-half underlying operating profit, as revenues fell over the year.Miner Rio Tinto was among the risers after it hailed an "outstanding performance" in the first half as underlying earnings jumped 21% and cash flow generation increased 8%, with the miner topping its cash cost reduction target ahead of schedule. Aviva gained after delivering half-year improvements in its five key metrics, increasing cash flow, operating profits and new business, as well as cutting both costs and its combined operating ratio.FTSE 100 - RisersSage Group (SGE) 381.40p +2.89%Aviva (AV.) 503.50p +2.82%G4S (GFS) 256.10p +2.56%ARM Holdings (ARM) 873.00p +2.52%Hargreaves Lansdown (HL.) 1,056.00p +2.23%Carnival (CCL) 2,178.00p +2.01%Rio Tinto (RIO) 3,454.00p +1.87%Legal & General Group (LGEN) 236.00p +1.72%Barratt Developments (BDEV) 340.20p +1.64%Sports Direct International (SPD) 657.50p +1.62%FTSE 100 - FallersCoca-Cola HBC AG (CDI) (CCH) 1,330.00p -3.27%Old Mutual (OML) 188.40p -2.84%RSA Insurance Group (RSA) 435.70p -1.85%Shire Plc (SHP) 4,603.00p -1.65%Smith & Nephew (SN.) 1,004.00p -1.57%InterContinental Hotels Group (IHG) 2,243.00p -1.54%easyJet (EZJ) 1,264.00p -1.48%IMI (IMI) 1,375.00p -1.36%GlaxoSmithKline (GSK) 1,398.50p -1.24%Anglo American (AAL) 1,551.00p -1.21%BC