Coke, along with many other beverage-makers, has been struggling for volumes in developed markets including North America, Japan and Western Europe, all of which showed volume declines in the third quarter, according to J.P. Morgan. Coke has offset softer volumes with higher pricing. Meanwhile, volume growth in emerging markets remain strong. Coke stock has fallen by 2.3% to $54.90 in morning trading, while rival PepsiCo ( PEP) has slipped 0.8% to $60.50. Dr Pepper Snapple ( DPS) has fallen by 1.2% to $28.70, while Jones Soda ( JSDA) has risen by 6.7% to 48 cents. -- Reported by Andrea Tse in New York>>See our new stock quote page. Follow TheStreet.com on Twitter and become a fan on Facebook.