Costs for plastic bottles and fuel to transport beverages have risen as oil prices heated up this year. Oil prices affect the price of polyethylene terephthalate, or PET, the plastic used by beverage companies to make soda bottles. Coke, Pepsi, Dr Pepper Snapple (DPS - Get Report) and other beverage makers cannot hedge the prices they pay for PET because the material is not traded like other commodities.
Over the last three months, Coke shares have fallen less than 3%, while Pepsi lost around 11.5%. Dr Pepper Snapple's stock is lower by around 5.3% in the same period.
Pepsi shares were 1.4% lower at $61 in trading Tuesday ahead of Wednesday's earnings report.
-- Written by Miriam Marcus Reimer in New York.
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