Chobani has hired investment bank Goldman Sachs to oversee the sale of 10-20 percent of the company's shares. The yogurt maker is seeking a strategic partner in part to help develop its international business, the person said.
The deal could value Chobani at more than $3 billion, the person said. It could involve the new investor buying investment fund TPG's 20 percent stake in the yogurt maker, which TPG bought in 2014 for $750 million.
Chobani now holds 44 percent of the USD 8 billion Greek yogurt market, according to Sanford Bernstein.
Coca-Cola and PepsiCo have been searching for new growth opportunities due to the declining popularity of soda drinks as consumers become more health-conscious.
Some analysts have spoken of a "secular" decline of conventional soda, pushing Coca-Cola and PepsiCo to rely on sales of bottled water and flavored waters and on their snack lines.